Entity Framework 64 bit problem

Hi All,
We have a .net 4.0 windows application, in this application we added linq to entities.
we run this application on x86 platform successfully but when we change the target platform to x64 and run again, we get invalid provider(System.Data.Provider.IncompatibleException).
We know that the beta EF is now only for 32 bit applications. But is there any way to pass this problem until the EF product for x64 is released.
Thanks,

No. If you want to use Entity Framework, you MUST be compiling for x86 right now. There's no 64 bit version of the provider yet.
Once there is you should be able to drop it in and change to x64 without needing code changes. But not today.

Similar Messages

Problem Entity framework and short types

I am using the Entity Framework in Visual Studio to access a table in my oracle database. Problem is when selecting a record in runtime the following error shows up:
Value was either too large or too small for an Int16
This error originates when trying to access a table-field declared as number(5). The framework translates this in a short field. The max value for short is 32767, but the value in the table is 36001.
Can I solve this?
thanks.

Yes, you need to change the mapping for that type to an int32. To do that you can add this to your configuration file:
<oracle.dataaccess.client>
<settings>
<add name="int16" value="edmmapping number(4,0)" />
<add name="int32" value="edmmapping number(9,0)" />
</settings>
</oracle.dataaccess.client>
You should then update the model to get the new changes. Note that I've found that I have to change the types manually in the model, but after I do that once it works fine. Documentation is here: http://docs.oracle.com/cd/E11882_01/win.112/e18754/featLINQ.htm

Entity framework code first inheritance table per type problem

hello
i am using ODP.NET version 11.2.0.3.20. i am trying to get entity framework code first to work. one problem i have encountered is with inheritance. i have a "table per type" inheritance scenario. i have 3 tables involved. the base table is called "S_PERIOD" which maps to the base "Period" class. i have a derived table called "S_SEASON_QUARTER" that maps to the derived "Quarter" class. And I have another derived table called "S_SEASON_PRICE_PERIOD" that maps to the derived "PriceBreak" class. for testing purposes i am trying to load all records. the problem is that every class instance ends up being of type "Quarter", which is incorrect. for whatever reason the provider thinks that every "S_PERIOD" record has a corresponding "S_SEASON_QUARTER" record. i took a look at the generated SQL and posted it down below. looking at this SQL it's clear to me why every object ends up being of type "Quarter". It looks like the provider is checking the "C2" field to determine the concrete type to instantiate. the problem however is that the "C2" field value provided by each derived table is ALWAYS equal to "1", which is a problem since this will result in the "case" statement always hitting the second "when" condition. does anyone have any idea how to fix this? thank you
SELECT
CASE WHEN (( NOT (("Project1"."C2" = 1) AND ("Project1"."C2" IS NOT NULL))) AND ( NOT (("Project2"."C2" = 1) AND ("Project2"."C2" IS NOT NULL)))) THEN '0X' WHEN (("Project1"."C2" = 1) AND ("Project1"."C2" IS NOT NULL)) THEN '0X0X' ELSE '0X1X' END AS "C1",
CAST( "Extent1"."PERIOD_ID" AS number(10,0)) AS "C2",
"Extent1"."START_DATE" AS "START_DATE",
"Extent1"."END_DATE" AS "END_DATE",
"Extent1"."NAME" AS "NAME",
"Extent1"."TYPE_CODE" AS "TYPE_CODE",
CAST( "Extent1"."CREATE_USER_ID" AS number(10,0)) AS "C3",
"Extent1"."CREATE_DATE" AS "CREATE_DATE",
CAST( "Extent1"."MODIFY_USER_ID" AS number(10,0)) AS "C4",
"Extent1"."MODIFY_DATE" AS "MODIFY_DATE",
CASE WHEN (( NOT (("Project1"."C2" = 1) AND ("Project1"."C2" IS NOT NULL))) AND ( NOT (("Project2"."C2" = 1) AND ("Project2"."C2" IS NOT NULL)))) THEN NULL WHEN (("Project1"."C2" = 1) AND ("Project1"."C2" IS NOT NULL)) THEN "Project1"."QUARTER_NAME" END AS "C5"
FROM "DBO_SPACE_DEV"."S_PERIOD" "Extent1"
LEFT OUTER JOIN (SELECT
     "Extent2"."QUARTER_NAME" AS "QUARTER_NAME",
     CAST( "Extent2"."QUARTER_ID" AS number(10,0)) AS "C1",
     1 AS "C2"
     FROM "DBO_SPACE_DEV"."S_SEASON_QUARTER" "Extent2" ) "Project1" ON ( CAST( "Extent1"."PERIOD_ID" AS number(10,0))) = "Project1"."C1"
LEFT OUTER JOIN (SELECT
     CAST( "Extent3"."PRICE_PERIOD_ID" AS number(10,0)) AS "C1",
     1 AS "C2"
     FROM "DBO_SPACE_DEV"."S_SEASON_PRICE_PERIOD" "Extent3" ) "Project2" ON ( CAST( "Extent1"."PERIOD_ID" AS number(10,0))) = "Project2"."C1"
Edited by: 997830 on Apr 3, 2013 8:40 AM

An update:
I tried again following this example to the letter:
Using NuGet to Install and Configure Oracle Data Provider for .NET
This time I used a console application as described in the example. Yes, I rebuilt the project after the NuGet install.
I made the appropriate mods to App.config. I get the same error message as with the MVC example above.
Does the ODP.Net driver really work with EF? If so, can anyone provide me with a working sample project?

"Object reference not set to an instance of an object." in Visual Studio 2012 Entity Framework Model-First

Hello
We're trying to use a Model-First with Entity Framework in Visual Studio, targeting an Oracle XE 11g installation.
No matter from what angle we're approaching the issue, we always end up with an "Object reference not set to an instance of an object" in Visual Studio:
First way:
- Add new ADO.NET Entity Framework Model to a .NET Framework 4.5 project
- Empty model
- Add some entities and associations
- Set Database Generation Workflow to "Generate Oracle Via T4 (TPT).xaml"
- Set DDL Generation Template to "SSDLToOracle.tt"
- Generate Database From Model
- VS asks for DB connection ==> Click "New Connection"
- Enter the connection properties to the Oracle XE database. "Test Connection" tells me the connection is okay.
- Click OK. Visual Studio shows the following error message:
(here's the image if it's not visible: https://dl.dropboxusercontent.com/u/35614983/vs2012_oracle_ef_error.png)
We also tried to generate the model in VS2010 and then manually transform it to an EF5 / VS2012 model. At the "Generate Database from Model" step, the same error appeared.
We also tried to generate the model from database (Database-First approach). Same error.
My configuration:
- Windows 7 Ultimate 64-bit
- Installed Oracle client: ODTwithODAC1120320_32bit.zip, so the version is 11.2.0.3.20
- Visual Studio 2012 Update 3 (11.0.60610.01)
Thanks for any hints!
EDIT: I just read that ODP.NET doesn't seem to support Entity Framework 5, so I tried a new project with Entity Framework 4.1, but I get the same errors.
EDIT 2: On a 32-bit Windows 7 virtual machine, everything works fine. Seems the problem is only there on my 64-bit Windows 7 machine.

Sorry for the delay on this one. Let me know if you are still seeing this and I will see if we can get more diagnostic info somehow.
That error is basically an exception fault. It means a bug or a misconfiguration of Oracle Developer Tools. Can you try to reinstall ODT and see if you notice any unusual errors during install.. and see if a reinstall fixes the problem?

Entity framework TPT does not work - showstopper

Greetings,
I'm experiencing a similar problem that is described here:
[Entity Framework and inheritance - Possible bug in EF?|http://stackoverflow.com/questions/11506683/entity-framework-and-inheritance-possible-bug-in-ef.]
I'm using:
Windows 7 64 bit
ODAC 11.2 Release 5 32 bit
Oracle Express 11.2 on localhost
Visual Studio 2012
Entity framework 5.0
.net 4.5
Create a simple database with TPT inheritance:
CREATE TABLE Person(
Id NUMBER(38, 0) NOT NULL,
Name VARCHAR2(50),
CONSTRAINT PK100 PRIMARY KEY (Id)
CREATE TABLE Employee(
Id NUMBER(38, 0) NOT NULL,
JobTitle VARCHAR2(50),
CONSTRAINT PK101 PRIMARY KEY (Id)
ALTER TABLE Employee ADD CONSTRAINT ref_Employee_person
FOREIGN KEY (Id)
REFERENCES Person(Id)
CREATE TABLE Superhero(
Id NUMBER(38, 0) NOT NULL,
Superpower VARCHAR2(50),
CONSTRAINT PK102 PRIMARY KEY (Id)
ALTER TABLE Superhero ADD CONSTRAINT ref_Superhero_person
FOREIGN KEY (Id)
REFERENCES Person(Id)
-- Sequence
CREATE SEQUENCE seq_id
INCREMENT BY 1
START WITH 55
MINVALUE 1
MAXVALUE 9999999999999999999999999999
NOCYCLE
NOORDER
CACHE 20
CREATE OR REPLACE TRIGGER PERSON_BI BEFORE INSERT ON PERSON FOR EACH ROW
BEGIN IF :NEW.ID IS NULL THEN SELECT SEQ_ID.NEXTVAL INTO :NEW.ID FROM DUAL; END IF; END;
Create a console application, add an edmx file, set up inheritance like so:
Diagram
And I set the Id property in Person entity as StoreGeneratedPattern to Identity
Then I created the following program:
static void Main(string[] args)
//Employee
var db = new Entities();
EMPLOYEE e = new EMPLOYEE() { ID = 0, JOBTITLE = "Programmer"};
e.NAME = "John Regular Doe";
db.People.Add(e);
//Superhero
SUPERHERO s = new SUPERHERO();
s.NAME = "Superman";
s.SUPERPOWER = "Flight";
db.People.Add(s);
db.SaveChanges();
//Fetch all persons and look at the type
//this is where I get an error:
var allPeople = db.People.ToList();
allPeople.ForEach(x => Console.WriteLine("type: " + x.GetType()));
This throws the following error when I fetch into allPeople:
All objects in the EntitySet 'Entities.People' must have unique primary keys. However, an instance of type 'TestingTPTInheritance.EMPLOYEE' and an instance of type 'TestingTPTInheritance.SUPERHERO' both have the same primary key value, 'EntitySet=People;ID=38'.
Looking at the database everything looks fine
-- Person table --
ID     NAME
39     John Regular Doe
40     Superman
-- Employee table --
ID     JOBTITLE
39     Programmer
-- Superhero table --
ID     SUPERPOWER
40     Flight
If I take the select that EF generates in " db.People.ToList();" and run it I get the following result:
C1      C2     NAME      C3      C4
0X0X     40     Superman
0X0X     39     John Regular Doe     Programmer
Is this a bug in ODAC. If so is there a workaround or will there be a fix soon?
Edited by: Amplus on 7.11.2012 07:59

Thank you for the reply shsu
I was being careless when I copied the error message and sequence, sorry about that. I did run this serveral times after I copied the error message. I recreate the seqence starting with 1 and recreated the problem. The error message is:
All objects in the EntitySet 'Entities.People' must have unique primary keys. However, an instance of type 'TestingTPTInheritance.EMPLOYEE' and an instance of type 'TestingTPTInheritance.SUPERHERO' both have the same primary key value, 'EntitySet=People;ID=2'.
The data in the tables is:
Person:
ID     NAME
1      John Regular Doe
2      Superman
employee
ID     JOBTITLE
1      Programmer
Superhero
ID     SUPERPOWER
2      Flight
And the generated select is:
SELECT
CASE WHEN (( NOT (("Project1"."C2" = 1) AND ("Project1"."C2" IS NOT NULL))) AND ( NOT (("Project2"."C2" = 1) AND ("Project2"."C2" IS NOT NULL)))) THEN '0X' WHEN (("Project1"."C2" = 1) AND ("Project1"."C2" IS NOT NULL)) THEN '0X0X' ELSE '0X1X' END AS "C1",
CAST( "Extent1"."ID" AS number(19,0)) AS "C2",
"Extent1"."NAME" AS "NAME",
CASE WHEN (( NOT (("Project1"."C2" = 1) AND ("Project1"."C2" IS NOT NULL))) AND ( NOT (("Project2"."C2" = 1) AND ("Project2"."C2" IS NOT NULL)))) THEN NULL WHEN (("Project1"."C2" = 1) AND ("Project1"."C2" IS NOT NULL)) THEN "Project1"."JOBTITLE" END AS "C3",
CASE WHEN (( NOT (("Project1"."C2" = 1) AND ("Project1"."C2" IS NOT NULL))) AND ( NOT (("Project2"."C2" = 1) AND ("Project2"."C2" IS NOT NULL)))) THEN NULL WHEN (("Project1"."C2" = 1) AND ("Project1"."C2" IS NOT NULL)) THEN NULL ELSE "Project2"."SUPERPOWER" END AS "C4"
FROM "TPT"."PERSON" "Extent1"
LEFT OUTER JOIN (SELECT
"Extent2"."JOBTITLE" AS "JOBTITLE",
CAST( "Extent2"."ID" AS number(19,0)) AS "C1",
1 AS "C2"
FROM "TPT"."EMPLOYEE" "Extent2" ) "Project1" ON ( CAST( "Extent1"."ID" AS number(19,0))) = "Project1"."C1"
LEFT OUTER JOIN (SELECT
"Extent3"."SUPERPOWER" AS "SUPERPOWER",
CAST( "Extent3"."ID" AS number(19,0)) AS "C1",
1 AS "C2"
FROM "TPT"."SUPERHERO" "Extent3" ) "Project2" ON ( CAST( "Extent1"."ID" AS number(19,0))) = "Project2"."C1"
With the following result:
C1      C2     NAME      C3      C4
0X0X     2      Superman      null      null --> should't there be a "Flight" entry here??
0X0X     1      John Regular Doe     Programmer     null
I also tried this:
var result1 = db.People.OfType<SUPERHERO>().ToList(); //Count=1
var result2 = db.People.OfType<EMPLOYEE>().ToList(); //Count=1
var result3 = db.People.OfType<PERSON>().ToList(); //Throws the following error:
All objects in the EntitySet 'Entities.People' must have unique primary keys. However, an instance of type 'TestingTPTInheritance.EMPLOYEE' and an instance of type 'TestingTPTInheritance.SUPERHERO' both have the same primary key value, 'EntitySet=People;ID=2'.
The only thing I can think of is that my little console app is picking up the oracle client from oracle express instead of the ODAC driver. Is there an easy way to force it to use the correct driver? I have this in my config file but I'm not sure if it works:
<oracle.dataaccess.client>
<settings>
<add name="DllPath" value="C:\oracle\product\11.2.0\client_3\bin" />
</settings>
</oracle.dataaccess.client>
And I have also referenced Oracle.Data.Access here:
C:\oracle\product\11.2.0\client_3\odp.net\bin\4\Oracle.DataAccess.dll
client_3 directory is my ODAC Release 5 installation. I changed the config settings to:
<oracle.dataaccess.client>
<settings>
<add name="DllPath" value="C:\oracle\product\11.2.0\client_3\odp.net\bin\4\Oracle.DataAccess.dll" />
</settings>
</oracle.dataaccess.client>
then the program was able to run this line:
var allPeople = db.People.ToList();
But both objects were of type EMPLOYEE. Then I ran this:
var result1 = db.People.OfType<SUPERHERO>().ToList();
and get the following error:
All objects in the EntitySet 'Entities.People' must have unique primary keys. However, an instance of type 'TestingTPTInheritance.EMPLOYEE' and an instance of type 'TestingTPTInheritance.SUPERHERO' both have the same primary key value, 'EntitySet=People;ID=2'.
The problem must be that I do have multiple versions of Oracle client installed on my computer and it is picking up the wrong one either when I'm generating the edmx file or when the application is connecting to the db. I think my next step will be to uninstall all oracle client instances as well as oracle express and try again from scratch!!

Where can I download ODAC 11.2.0.2.50 Beta for Entity Framework?

Hello,
An application I have been developing during the last quarter of 2011 was using ODP.NET 11.2.0.2.50 which was the last beta version with Entity Framework support before final release. I would like to upgrade to Release 4 now but unfortunately it is not likely to happen with the actual project. Problem is that since I lost the installer for both 32 and 64bits versions and that the download is not available on the Oracle Downloads website anymore I can't deploy the application on new machines.
The name of the file was ODAC1120250Beta_EntityFramework_32bit.zip but I can't find it anywhere on the web or only leads to dead links. Would appreciate a bit of help on that.
Thank you.
Lionel.

So what can i use rather then 11.2.0.2.50 that will be supported for entity frame work
i used "ODTwithODAC112030" but it is not supported by ADO. net entity model framework.
my problem:
i made a entity model but i cannot access data from oracle database.Nothing show in the client side data grid.

Deploying LightSwitch applications to IIS using the Oracle Entity Framework

I have had no sucess running Lightswitch applications on IIS using the Oracle Beta entity framework. Applications work fine from visual studio but after deployment fail when I trying to access an Oracle data entity.
I have tried deploying to a 2008 V2 server 64Bit running IIS7.5 and also to a 32 bit windows 7 machine running IIS7. Both machines had the entity framework installed and I could connect to Oracle with SQL developer just fine. Briefly in the case of the 64 bit machine I get a bad image exception indicating a 64/32 bit conflict. (App pool switched to allow 32bit). The problem with the 32Bit machine is that the session either hangs or dies with an [Arg_TargetInvocationException]
In all tests apps could connect to SQL server fine but as soon as I use an Oracle connection they fail. It would very helpfull if someone could confirm that they have managed to use the Entity framework Beta with Lightswitch and IIS.
Thanks in advance
Edited by: user12218662 on 08-Oct-2011 11:35
Edited by: user12218662 on 08-Oct-2011 11:37

Both hosts working now. Initially I created a service account for the aspnet service with extended rights and assigned this to the application pool. This subsequentluy turned out not to be required - ApplicationPoolIdentity works fine. What worked was as follows:
1. On a 64 Bit host you need to set the application pool to Enable 32 Bit Applications (Right click the relevant app pool in IIS and select advanced)
2. Switch off windows authentication for the application (leaving just anonoymous authentication) This was required on both hosts
3. On the 32 Bit host copy tnsnames to the oracle client admin folder - the framework seems to ignore theTNS_ADMIN environment variable. Probably more to this but its working for now.

Adding Entity Framework Crashes Visual Studio 2010/2013

I'm having problem with using the Entity Framework version 6/5. Whenever, I create the new solution and try to use the Entity Framework, Visual Studio crashes and restarts itself. Scenarios are:
1) Add Entity Framework by Add New Item-> Entity Framework-> go through wizard and finish...Crash.
2) Add by Nuget console-> Install-Package Entityframework...Crash.
3) Reload the solution from either #1 or #2, run Nuget console->Uninstall-Package Entityframework...Crash
4) new solution, nuget package manager, select Entity Framework->Install...Crash.
No matter what I do, and how I try to install entity framework, it keeps crashing on both VS 2010 and VS 2013. It's frustrating when I'm trying to learn the technology. Below are the Application error log I see in the Event Viewer:
Log Name:      Application
Source:        .NET Runtime
Date:          4/29/2015 9:51:25 AM
Event ID:      1025
Task Category: None
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      DETROIT189L.HMMNA.COM
Description:
Application: devenv.exe
Framework Version: v4.0.30319
Description: The application requested process termination through System.Environment.FailFast(string message).
Message: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
Stack:
   at System.Environment.FailFast(System.String)
   at System.Management.Automation.WindowsErrorReporting.FailFast(System.Exception)
   at System.Management.Automation.CommandProcessorBase.CheckForSevereException(System.Exception)
   at System.Management.Automation.ExceptionHandlingOps.ConvertToMethodInvocationException(System.Exception, System.Type, System.String, Int32, System.Reflection.MemberInfo)
   at DynamicClass.CallSite.Target(System.Runtime.CompilerServices.Closure, System.Runtime.CompilerServices.CallSite, System.Object, System.Object, System.Object, Boolean, Int32, System.Object, System.Object, System.Object, System.Object)
   at System.Dynamic.UpdateDelegates.UpdateAndExecute9[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon,
mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon,
mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon,
mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]](System.Runtime.CompilerServices.CallSite, System.__Canon, System.__Canon, System.__Canon,
Boolean, Int32, System.__Canon, System.__Canon, System.__Canon, System.__Canon)
   at System.Management.Automation.Interpreter.DynamicInstruction`10[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon,
mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon,
mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon,
mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.Interpreter.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.LightLambda.RunVoid1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]](System.__Canon)
   at System.Management.Automation.DlrScriptCommandProcessor.RunClause(System.Action`1<System.Management.Automation.Language.FunctionContext>, System.Object, System.Object)
   at System.Management.Automation.DlrScriptCommandProcessor.Complete()
   at System.Management.Automation.CommandProcessorBase.DoComplete()
   at System.Management.Automation.Internal.PipelineProcessor.DoCompleteCore(System.Management.Automation.CommandProcessorBase)
   at System.Management.Automation.Internal.PipelineProcessor.SynchronousExecuteEnumerate(System.Object, System.Collections.Hashtable, Boolean)
   at System.Management.Automation.PipelineOps.InvokePipeline(System.Object, Boolean, System.Management.Automation.CommandParameterInternal[][], System.Management.Automation.Language.CommandBaseAst[], System.Management.Automation.CommandRedirection[][],
System.Management.Automation.Language.FunctionContext)
   at System.Management.Automation.Interpreter.ActionCallInstruction`6[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon,
mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon,
mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.Interpreter.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.LightLambda.RunVoid1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]](System.__Canon)
   at System.Management.Automation.PSScriptCmdlet.RunClause(System.Action`1<System.Management.Automation.Language.FunctionContext>, System.Object, System.Object)
   at System.Management.Automation.PSScriptCmdlet.DoEndProcessing()
   at System.Management.Automation.CommandProcessorBase.Complete()
   at System.Management.Automation.CommandProcessorBase.DoComplete()
   at System.Management.Automation.Internal.PipelineProcessor.DoCompleteCore(System.Management.Automation.CommandProcessorBase)
   at System.Management.Automation.Internal.PipelineProcessor.SynchronousExecuteEnumerate(System.Object, System.Collections.Hashtable, Boolean)
   at System.Management.Automation.PipelineOps.InvokePipeline(System.Object, Boolean, System.Management.Automation.CommandParameterInternal[][], System.Management.Automation.Language.CommandBaseAst[], System.Management.Automation.CommandRedirection[][],
System.Management.Automation.Language.FunctionContext)
   at System.Management.Automation.Interpreter.ActionCallInstruction`6[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon,
mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon,
mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.Interpreter.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.LightLambda.RunVoid1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]](System.__Canon)
   at System.Management.Automation.DlrScriptCommandProcessor.RunClause(System.Action`1<System.Management.Automation.Language.FunctionContext>, System.Object, System.Object)
   at System.Management.Automation.DlrScriptCommandProcessor.Complete()
   at System.Management.Automation.CommandProcessorBase.DoComplete()
   at System.Management.Automation.Internal.PipelineProcessor.DoCompleteCore(System.Management.Automation.CommandProcessorBase)
   at System.Management.Automation.Internal.PipelineProcessor.SynchronousExecuteEnumerate(System.Object, System.Collections.Hashtable, Boolean)
   at System.Management.Automation.PipelineOps.InvokePipeline(System.Object, Boolean, System.Management.Automation.CommandParameterInternal[][], System.Management.Automation.Language.CommandBaseAst[], System.Management.Automation.CommandRedirection[][],
System.Management.Automation.Language.FunctionContext)
   at System.Management.Automation.Interpreter.ActionCallInstruction`6[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon,
mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon,
mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.Interpreter.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.LightLambda.RunVoid1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]](System.__Canon)
   at System.Management.Automation.DlrScriptCommandProcessor.RunClause(System.Action`1<System.Management.Automation.Language.FunctionContext>, System.Object, System.Object)
   at System.Management.Automation.DlrScriptCommandProcessor.Complete()
   at System.Management.Automation.CommandProcessorBase.DoComplete()
   at System.Management.Automation.Internal.PipelineProcessor.DoCompleteCore(System.Management.Automation.CommandProcessorBase)
   at System.Management.Automation.Internal.PipelineProcessor.SynchronousExecuteEnumerate(System.Object, System.Collections.Hashtable, Boolean)
   at System.Management.Automation.Runspaces.LocalPipeline.InvokeHelper()
   at System.Management.Automation.Runspaces.LocalPipeline.InvokeThreadProc()
   at System.Threading.ThreadHelper.ThreadStart_Context(System.Object)
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)
   at System.Threading.ThreadHelper.ThreadStart()
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
    <Provider Name=".NET Runtime" />
    <EventID Qualifiers="0">1025</EventID>
    <Level>2</Level>
    <Task>0</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2015-04-29T13:51:25.000000000Z" />
    <EventRecordID>29379</EventRecordID>
    <Channel>Application</Channel>
    <Computer>DETROIT189L.HMMNA.COM</Computer>
    <Security />
</System>
<EventData>
    <Data>Application: devenv.exe
Framework Version: v4.0.30319
Description: The application requested process termination through System.Environment.FailFast(string message).
Message: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
Stack:
   at System.Environment.FailFast(System.String)
   at System.Management.Automation.WindowsErrorReporting.FailFast(System.Exception)
   at System.Management.Automation.CommandProcessorBase.CheckForSevereException(System.Exception)
   at System.Management.Automation.ExceptionHandlingOps.ConvertToMethodInvocationException(System.Exception, System.Type, System.String, Int32, System.Reflection.MemberInfo)
   at DynamicClass.CallSite.Target(System.Runtime.CompilerServices.Closure, System.Runtime.CompilerServices.CallSite, System.Object, System.Object, System.Object, Boolean, Int32, System.Object, System.Object, System.Object, System.Object)
   at System.Dynamic.UpdateDelegates.UpdateAndExecute9[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon,
mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon,
mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon,
mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]](System.Runtime.CompilerServices.CallSite, System.__Canon, System.__Canon, System.__Canon,
Boolean, Int32, System.__Canon, System.__Canon, System.__Canon, System.__Canon)
   at System.Management.Automation.Interpreter.DynamicInstruction`10[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon,
mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon,
mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon,
mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.Interpreter.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.LightLambda.RunVoid1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]](System.__Canon)
   at System.Management.Automation.DlrScriptCommandProcessor.RunClause(System.Action`1<System.Management.Automation.Language.FunctionContext>, System.Object, System.Object)
   at System.Management.Automation.DlrScriptCommandProcessor.Complete()
   at System.Management.Automation.CommandProcessorBase.DoComplete()
   at System.Management.Automation.Internal.PipelineProcessor.DoCompleteCore(System.Management.Automation.CommandProcessorBase)
   at System.Management.Automation.Internal.PipelineProcessor.SynchronousExecuteEnumerate(System.Object, System.Collections.Hashtable, Boolean)
   at System.Management.Automation.PipelineOps.InvokePipeline(System.Object, Boolean, System.Management.Automation.CommandParameterInternal[][], System.Management.Automation.Language.CommandBaseAst[], System.Management.Automation.CommandRedirection[][],
System.Management.Automation.Language.FunctionContext)
   at System.Management.Automation.Interpreter.ActionCallInstruction`6[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon,
mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon,
mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.Interpreter.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.LightLambda.RunVoid1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]](System.__Canon)
   at System.Management.Automation.PSScriptCmdlet.RunClause(System.Action`1<System.Management.Automation.Language.FunctionContext>, System.Object, System.Object)
   at System.Management.Automation.PSScriptCmdlet.DoEndProcessing()
   at System.Management.Automation.CommandProcessorBase.Complete()
   at System.Management.Automation.CommandProcessorBase.DoComplete()
   at System.Management.Automation.Internal.PipelineProcessor.DoCompleteCore(System.Management.Automation.CommandProcessorBase)
   at System.Management.Automation.Internal.PipelineProcessor.SynchronousExecuteEnumerate(System.Object, System.Collections.Hashtable, Boolean)
   at System.Management.Automation.PipelineOps.InvokePipeline(System.Object, Boolean, System.Management.Automation.CommandParameterInternal[][], System.Management.Automation.Language.CommandBaseAst[], System.Management.Automation.CommandRedirection[][],
System.Management.Automation.Language.FunctionContext)
   at System.Management.Automation.Interpreter.ActionCallInstruction`6[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon,
mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon,
mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.Interpreter.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.LightLambda.RunVoid1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]](System.__Canon)
   at System.Management.Automation.DlrScriptCommandProcessor.RunClause(System.Action`1<System.Management.Automation.Language.FunctionContext>, System.Object, System.Object)
   at System.Management.Automation.DlrScriptCommandProcessor.Complete()
   at System.Management.Automation.CommandProcessorBase.DoComplete()
   at System.Management.Automation.Internal.PipelineProcessor.DoCompleteCore(System.Management.Automation.CommandProcessorBase)
   at System.Management.Automation.Internal.PipelineProcessor.SynchronousExecuteEnumerate(System.Object, System.Collections.Hashtable, Boolean)
   at System.Management.Automation.PipelineOps.InvokePipeline(System.Object, Boolean, System.Management.Automation.CommandParameterInternal[][], System.Management.Automation.Language.CommandBaseAst[], System.Management.Automation.CommandRedirection[][],
System.Management.Automation.Language.FunctionContext)
   at System.Management.Automation.Interpreter.ActionCallInstruction`6[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon,
mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.__Canon,
mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.Interpreter.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.LightLambda.RunVoid1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]](System.__Canon)
   at System.Management.Automation.DlrScriptCommandProcessor.RunClause(System.Action`1<System.Management.Automation.Language.FunctionContext>, System.Object, System.Object)
   at System.Management.Automation.DlrScriptCommandProcessor.Complete()
   at System.Management.Automation.CommandProcessorBase.DoComplete()
   at System.Management.Automation.Internal.PipelineProcessor.DoCompleteCore(System.Management.Automation.CommandProcessorBase)
   at System.Management.Automation.Internal.PipelineProcessor.SynchronousExecuteEnumerate(System.Object, System.Collections.Hashtable, Boolean)
   at System.Management.Automation.Runspaces.LocalPipeline.InvokeHelper()
   at System.Management.Automation.Runspaces.LocalPipeline.InvokeThreadProc()
   at System.Threading.ThreadHelper.ThreadStart_Context(System.Object)
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)
   at System.Threading.ThreadHelper.ThreadStart()
</Data>
</EventData>
</Event>

Hi Hiroaki Morikawa,
>>Message: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
Based on the error message, I doubt that it is the memory performance issue, like this case:
http://social.msdn.microsoft.com/Forums/en-US/71f134bd-d665-43b5-8c67-52c4d6ed4ed9/kinect-driver-problem?forum=kinectsdknuiapi.
Please restart the system, stop all unnecessary third party processes, and make sure that your task manager is free, then test again.
Do you install the VS2010 and VS2013 in the same machine? If so, please also make sure that your machine has the enough configurations. To make sure that it is not the add-in issue, please also run your VS in safe mode, or run your VS as the admin, test
it again.
Best Regards,
Jack
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Entity Framework doesn't save new record into database

Hy,
I have problem with saving new record into database using Entity Framework.
When I run program, everything seems normal, without errors . Program shows existing, manually added records into the database, and new one too. But new one isn't save into database after running program.
I've got no idea where's problem. There is code for add new record, show existing.
Thanks for help!!
// add new record
using (var db=new DatabaseEntitiesContext())
var person = new Table()
First_Name = "New_FName",
Second_Name = "New_SName",
PIN = "4569"
db.Tables.Add(person);
db.SaveChanges();
//show all records
using (var db=new DatabaseEntitiesContext())
var selected = from x in db.Tables
select x;
foreach (var table in selected)
Console.WriteLine("{0}{1}{2}",table.First_Name,table.Second_Name,table.PIN);

Hi BownieCross;
If you are using a local database file in your project the following may be the cause.
From Microsoft Documentation:
Issue:
"Every time I test my application and modify data, my changes are gone the next time I run my application."
Explanation:
The value of the Copy
to Output Directory property is Copy
if newer or Copy
always. The database in your output folder (the database that’s being modified when you test your application) is overwritten every
time that you build your project. For more information, see How
to: Manage Local Data Files in Your Project.
Fernando (MCSD)
If a post answers your question, please click "Mark As Answer" on that post and "Mark as Helpful".
NOTE: If I ask for code, please provide something that I can drop directly into a project and run (including XAML), or an actual application project. I'm trying to help a lot of people, so I don't have time to figure out weird snippets with undefined objects
and unknown namespaces.

I can't save the record in a new/empy table of sqlserver in the entity Framework 5.0

Hi guys ,
I have tried to become a database expert in Entity Framework but I can't. because I am not able to save the record in a fresh/ empty table of sql server 2008 r2 database. for that I have watched the video tutorials step by steps that how to save the record.
I followed the tutorials step by step and at the end the result is negative.
I tried a simple way given below. please some one help me that where and what I missing the.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using EmployeesLib;
namespace EmpApplication
public partial class Form1 : Form
private EMPEntities _dbContext;
public Form1()
InitializeComponent();
private void Form1_Load(object sender, EventArgs e)
_dbContext = new EMPEntities();
var sql = _dbContext.Employees;
this.employeeBindingSource.DataSource = sql.ToList();
private void employeeBindingNavigatorSaveItem_Click(object sender, EventArgs e)
this.Validate();
_dbContext.SaveChanges();
I have used datagrid addid a row by Click Add button on the NavigationBindingsource entered an employee name
and clicking the save button on the NavigationBindingSource. When I am restarting the application I nothing founding on the Datagrid I am saving before.
below is the Connection String in the App.config file both in the project.
APP.CONFIG connection string
<add name="EMPEntities" connectionString="metadata=res://*/EmpModal.csdl|res://*/EmpModal.ssdl|res://*/EmpModal.msl;provider=System.Data.SqlClient;provider connection string="data source=(local);initial catalog=Inventory;integrated
security=True;MultipleActiveResultSets=True;App=EntityFramework"" providerName="System.Data.EntityClient" />

humm, I falling the ball to the batsman(sqlserver) but it getting "NOBALL" in response(not saving). Ok it my be problem in visual studio I am struggling to remove my operating System, VS2013 and sql server, by reinstalling it might works.
because i havent any other computer where these application are installed for the test.
If you create and send me a small project that contain minimum of two columns of table( in sql server ) which can saving new data from datagrid so i will thankfull of you.
it is just for confirmation that either the problem is in OS or VS.
I doubt that any of it has anything to do with the issue. If you think it does, then you can post to the forums.
https://social.msdn.microsoft.com/Forums/vstudio/en-US/home?forum=vssetup
https://social.msdn.microsoft.com/Forums/sqlserver/en-US/home?category=sqlserver
I think you are riding a bad horse (that tutorial) you are using, and you need to change horses. I think the 'modified' state is not being rasied on the entity bound to the grid when it has changed, and EF is not going save any entity that's not in a modified
state.

Multiple database users, ORM, entity framework, best practices

Hello everyone!
You've already helped me several times, however I must ask for an advice once more.
I was assigned to develop .NET application with Data Access Layer and I've decided to use Oracle Database Software to provide sample data.
As I'm absolute novice considering creating DAL I'd be grateful if you can examine my plan in terms of security and reliability:
My database:
1) I've created database with sample tables and relations between them. All tables belongs to databaseAdmin.
2) I've created HR and Manager database users and granted them some privileges on certain databaseAdmin's tables. My intention is to reduce access to unnecessary tables. If my application user want to make some changes to Customers table it should be enough to connect to database as HR.
And now I'd like to map my database using Entity Framework in my application. And that's where I have a problem:
-If I create Entity Model basing on databaseAdmin tables I get perfect model, however every Entity SQL query would be executed on behalf of databaseAdmin, which breaks my idea of hiding unnecessary tables.
-If I create Entity Model for HR and Manager users, my models could overlap on tables that both users have access to and no connection between tables would be generated (as from their point of view those tables are just some tables that belong to databaseAdmin)
Could you help me with this deadlock? Or maybe my assumptions about multiple database users are incorrect? Please, bear in mind I'm a novice.
I was trying to find a solution in web, and there're tons of data discussing technical aspects of Entity Framework etc., but not so many documents about conceptual model of database.

hi Michael,
Thanks for you posting!
Sorry for I am not totally understanding your issue. Maybe two points need your confirm:
1. I confuse with the "Service controller"? IS your meaning MVC controller? Or ServiceController(http://www.codeproject.com/Articles/31688/Using-the-ServiceController-in-C-to-stop-and-start
2.whether The type of ID in the model is match to the database ? In other words, Is the type of IDin .edmx matched to the database?
By the way, it seems that this issue is more related to EF. You could post this issue on EF discussion for better support.
Thanks & Regards,
Will
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Entity Framework : Outer Joins

Hello,
I'm trying to solve some issues with an application that I'm developing....
I have a problem with outer joins:
var query = (from i in dbo.ITEMs
                         join o in dbo.ORGANIZATIONs on i.ORGSEQNO equals o.ORGSEQNO
                         join iv in dbo.ITEMVERSIONs on i.ITEMSEQNO equals iv.ITEMSEQNO
                         join it in dbo.ITEMTARGETs on iv.VERSIONSEQNO equals it.VERSIONSEQNO
                         join id in dbo.ITEMDESCRIPTIONs.DefaultIfEmpty() on it.ITEMTARGETSEQNO equals id.ITEMTARGETSEQNO
                         select i).AsQueryable();
If I remove the DefaultIfEmpty the query works as expected, with the "DefaultIfEmpty" in, it generates a sub-select that doesn't execute.
1 ORA-00904: "SingleRowTable3"."X": invalid identifier SQL1.sql 44 23
This is the occorring error.
Thanks for your help.

You can check my thread Entity Framework generates invalid oracle sql.
Generally Entity Framework sometimes generates joins using APPLY which does not work on NON SQL SERVER system.

Transaction abort Entity framework - Oracle 10g

Hi.
I have a problem using entity framework and Oracle 10g, i m using a transactionScope in my code, but when the transaction is finishing is throwed a exception "Transaction Abort" , it's a problem only when i am using Oracle i don't have any problem with SQL server.
Thanks in advance for your help.

Hi.
I have a problem using entity framework and Oracle 10g, i m using a transactionScope in my code, but when the transaction is finishing is throwed a exception "Transaction Abort" , it's a problem only when i am using Oracle i don't have any problem with SQL server.
Thanks in advance for your help.

How to create ViewModel in an MVVM application using entity framework where database has many-to-many relationship?

I have started developing a small application in WPF. Since I am completely new to it, to start with I took a microsoft's sample available at
Microsoft Sample Application and following the pattern of the sampke I have been so far successful in creating four different views for their corresponding
master tables. Unfortunately, I have got stuck up as the sample does not contain pattern for creating ViewModel when there is a many-to-many relationship in the database. In my application, I have the following data structure:
1. Table Advocate(advId, Name)
2. Table Party (partyId, Name)
3 Table Case (caseId, CaseNo)
4. Link Table Petitioner (CaseId, PartyId)
5. Link Table Respondent (CaseId, PartyId)
6. Link Table EngagedAdvocate(CaseId, advId)
7. Link Table EngagedSrAdvocate(CaseId, advId)
In the scenario above, I am a bit confused about how to go forward creating the required ViewModel which would render me to have multiple instances of Petitioners, Respondents, Advocates and SrAdvocates.
Please explain details in step by step manner considering that whatever work I have completed so far is a replica of Microsoft's sample referred above. I would also like to mention that I have developed my application
using VB.net. So please provide solution in vb.net.
After getting many-to-many relationship introduced into my application, it would achieve one level above the sample application and I would like to share with the community so that it could be helpful to many aspiring developers seeking help with MVVM.

Hi ArunKhatri,
I would suggest you referring to Magnus's article, it provides an example of how you could display and let the user edit many-to-many relational data from the Entity Framework in a dynamic and data-bound DataGrid control in WPF:
http://social.technet.microsoft.com/wiki/contents/articles/20719.wpf-displaying-and-editing-many-to-many-relational-data-in-a-datagrid.aspx
You can learn how to design the ViewModel and the relationship between the entities.
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Entity Framework - unable to select the oracle data connection

Entity Framework - unable to select the oracle data connection from the wizard that allows you to select the data provider. Even though we successfully added a data connection that points to an oracle database, we still can't select an existing data connection or create a new database provider that points to an oracle instance.
we are using both vs 2008 sp1 and vs 2010. We connect to oracle 11g and we use the latest oracle odp.net driver. the Driver is installed and working in vs studio.

I had this exact problem when I started. I think I had downloaded the wrong odbc (the 64x version). When I unloaded that version and downloaded the 32bit version it worked.
Hope that helps. ~ Darla

Entity Framework 64 bit problem

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