Entity Framework bound to WPF DataGrid...
Hi,
I have a strange behaviour. I have an entity set bound to a DataGrid which looks to be ok since it retrieves the data all right and the binding seems to work more or less.
When I change a value on a column, the data isn't persisted immediately when doing SaveChanges() but if I do a second change, then the previous change is persisted. Yeah is sounds weird I know but here's how I bind the grid
MyGrid.ItemsSource = _Context.Customers.ToList();
I really don't see why yet it persists the second time I do a change in the grid and it persists the previous change.
I needed UpdateSourceTrigger {Binding MyField, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}
in the Binding and this solved the problem. Weird that any default
doesn't work for that.
Glad that you've solved this issue and share the solution with us:)
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Similar Messages
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Need some samples to make Entity framework interact with WPF
HI guys,
I need to create an app which will query all details about customer from very big database for different search crieria. I don't have any sp to call individual section details of customer. so i planned to go with Entity framework and WPF. Both are new to
me.
Could someone please help me with creating good WPF application (beautiful look and feel) & entity framework interaction with DB?
or any other to make this requirement in an easy way with latest technologies.. All i need some good UI for searching customer details..
thanks in advance
Regards
bala
BalamuruganI (obviously) agree my sample is something to look at.
Since it's the first in a series rather than a complete guide it cuts a number of corners.
One to emphasise is that I almost never allow a user to edit in a datagrid directly.
I either use popups so they are forced to work on one record at a time.
Or I have a different usercontrol for a particular task a user does - like raising an order say.
The second in the series is on the way. Not sure when exactly but next month. I have the code ready but I've not written the article for it yet. Depending on your timescales you might find that useful.
Also read this:
http://social.technet.microsoft.com/wiki/contents/articles/26673.wpf-collectionview-tips.aspx
That explains some dynamic filtering on the client and touches on a way to haul bits of a HUGE set of data onto the client.
You definitely don't want to do that all at once.
The thing to emphasis is you should always be looking to give the user a subset to look at.
Think in terms of a maximum of 200 to 300 records at a time in a datagrid.
Linq with EF offers pass through queries.
You will almost certainly want to use that feature in order to pick all the customers starting with the letter A or in town xyz or whatever.
You use linq on the client and it is turned into sql on the database.
One thing which is sort of odd about linq is that the sql is generated when you iterate a collection. That has an odd benefit which is great for flexible querying.
You can base one linq query on another and chain your various criteria together.
That only generates sql when you use that end result.
Hope that helps.
Recent Technet articles:
Property List Editing;
Dynamic XAML -
CRVS2010 Beta - WPF / Entity Framework example?
Has anyone been successful integrating Entity Framework objects into the CR WPF viewer? The designer seems to work, but all we get is a blank page. Trying to load the entities directly runs into trouble from the "not-nullable" problem and the nullable custom entities don't shoe up in the field selector (not sure why).
If you can share a positive experience, we'd appreciate it.I've been able to produce a report of our Entity Framework data by moving the data into local objects. The WPF Report Viewer seems incapable of referring to classes in other projects of the solution. More importantly when I try to use the Database Expert to use certain objects (tables) which link to each other through foreign keys, I am unable (because of viewer errors) to display the report. Is anyone else working in a similar environment?
-
Entity Framework in WPF Application - Using Statement or Implement IDisposable
I have a WPF application that uses Entity Framework.
I have implemented a Repository that implements IDisposable, that holds my EF context. When the application starts up I new up a Repository, which news up an EF context, then when the application shuts down, I dispose of my Repository, which disposes
the EF context as well.
The end result is that my context remains open during the entire lifetime of the application.
I've been reading up on EF, and all the examples put the operations against the EF context in a using statement. Is that the preferred approach? What is the priority: to keep the context open briefly, or just to make sure you properly dispose
of it when you're finished with it.
Thanks.
Aaron>
https://msdn.microsoft.com/en-us/library/aa355056(v=vs.110).aspx
That link is only for WCF and it's broken implementation of the Dispose pattern.
>I have been burnt in doing it where the connection was not closed or disposed when it short-circuted out of the Using statement on exception
If so, it was a bug. You should expect that not to happen.
'using' will close your connection, unless the connection was open before the DbContext and was passed in. 'using' is the safest way to ensure that the connections are closed in a timely manner.
David
David http://blogs.msdn.com/b/dbrowne/
I absoultly do not agree with you. I have been burnt in using the Using statment. And it was along the lines that an excpetion was thrown within the Using statement and no closing of the connection or dispoiong of it ever occured, which is what the WCF example
is showing on how a Using statement can be short-circuted and things can go wrong.
I don't care if the Using statement issue is being shown on a WCF typed cleint. I do the same thing in using straight up ADO.NET or EF, becuase I have been burnt by the Using statement, and I dont use them to open, close or dispose of a connection. -
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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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. -
Add Data from DataGridView in Data entity framework
private void ShtoArtikullin()
//FaturatDetalet fd = new Faturatdetalet();
System.Data.DataRow newrow = lvShitjetDetajet.NewRow();
//fd.FaturaID = -1;
int lastid = 1;
//if (dtDetaletFatura.Rows.Count == null)
lastid = lvShitjetDetajet.Rows.Count + 1;
newrow["FaturaID"] = lastid;
newrow["ArtikulliID"] = lvArtikujt.SelectedRows[0].Cells["ID"].Value;
newrow["Emri"] = lvArtikujt.SelectedRows[0].Cells["Emri"].Value;
newrow["Njesia"] = lvArtikujt.SelectedRows[0].Cells["Njesia"].Value;
newrow["Sasia"] = 1;
newrow["Cmimi"] = lvArtikujt.SelectedRows[0].Cells["Cmimi"].Value;
newrow["Totali"] = lvArtikujt.SelectedRows[0].Cells["Cmimi"].Value;
//DataRow r = newrow;
//newrow["Barkodi"] = dgArtikujt.SelectedRows[0].Cells["Barkodi"].Value;
dtDetaletFatura.Rows.Add(newrow);
////selektimi e percjell artikullin e fundit
dgDetaletFat.Rows[dgDetaletFat.Rows.Count - 1].Selected = true;
//dgDetaletFat.ClearSelection();
//e fshin tekstin ne txtserch te artikullin e shtuar
txtSearch.Text = "";
I need this code to do in Data entity framework,this kode is to add data from one datagridview to another datagridview it work well in sqldataadapter but i need to do in data entity framework how to do this?If you add these entries to an observablecollection and put that in application.current.resources. Use that same observablecollection in both datagrids.
When you add an entity in one DataGrid then it will appear in the other one.
Although it is not really what the sample is about, you can see a simple way to share an observable collection across views in this:
https://gallery.technet.microsoft.com/Dynamic-XAML-Composed-View-e087f3c1
I don't quite follow where the selecting comes in with your code but that sample also uses the current item to share which is selected.
I also recommend wrapping an entity in a row viewmodel.
As I do in this:
http://social.technet.microsoft.com/wiki/contents/articles/28209.wpf-entity-framework-mvvm-walk-through-1.aspx
Please don't forget to upvote posts which you like and mark those which answer your question.
My latest Technet article - Dynamic XAML -
Hi,
I am posting to get some clarification of some recent information about the new EF 7.
In the MSDN blog it is stated that:
"Entity Framework is a popular data access choice for traditional client and server applications that target the
full .NET Framework. This includes applications built with technologies such as WPF, WinForms and ASP.NET. As we look to the future, we believe there is value in providing the same programming model for data access on the remaining platforms where .NET development
is common. This includes Windows Store, Windows Phone and the Cloud
Optimized .NET that was announced at TechEd. EF7 will work on all of these platforms as well
as Mono, on both Mac and Linux."
Does this mean that EF7 will work with a console application/WinForms application running on Mono & Linux, or does it mean EF7 is only going to be supported on Mono & Linux in conjunction with ASP.NET?
Thanks
Lloyd J. AtkinsonHi Lioyd,
I think it’s impossible. Microsoft will not allow this. But we can hope Mono release a new Runtime to support Entity Framework working on Linux.
Regards, -
Using Entity Framework with Crystal Master Detail Reporting
My project is a WPF project connected to a SQL Server Compact Edition database. Since Crystal does not support nullable types, I have created classes specifically for the report to consume. This is a simplified version of what I am attempting to do.
For example...
class Band
public string BandName { get; set; }
public string BandCity { get; set; }
public List<BandRecording> RecordingsList { get; set; }
class BandRecording
public string Year { get; set; }
public string Description { get; set; }
In my code behind for this report, I am using Entity Framework to pull the data. Just pulling information for one band...
using (RockEntities re = new RockEntities())
var bandinfo = (from b in re.Band
where b.BandName == "BT"
select new
b.BandName,
b.BandCity,
Recordings = b.Recordings.OrderBy(z => z.Year)
}).FirstOrDefault();
OK, now I start moving to the data to class I have defined...
Band b = new Band();
b.RecordingsList = new List<BandRecording>();
b.BandName = bandinfo.BandName;
b.BandCity = bandinfo.BandCity;
foreach(var Recording in bandinfo.Recordings)
BandRecording br = new BandRecording();
br.Year = Recording.Year;
br.Description = Recording.Description;
b.RecordingsList.Add(br);
Since Crystal Supports IEnumerable, I create a list to hold the main record (although I am only reporting on one band)...
List<Band> lb = new List<Band>();
lb.Add(lb);
ReportDocument rd = new ReportDocument();
rd.Load("BandReport.rpt");
rd.SetDataSource(lb);
I have put the Band info in the Report Header section. This is all working fine. In the details section I would like to put the Band Recording info. I haven't figured out how to do this. I have put the fields in the Details section, but how do I tell the details section to use the inner List<BandRecordings>?
Any help would be greatly appreciated.Only way I can see of doing this would be to place emprty formulas into the section. The populate the formula(s) with the required field;
Imports CrystalDecisions.CrystalReports.Engine
Imports CrystalDecisions.Shared
Public Class Form1
Inherits System.Windows.Forms.Form
Dim Report As New CrystalReport1()
Dim FormulaFields As FormulaFieldDefinitions
Dim FormulaField As FormulaFieldDefinition
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
FormulaFields = Report.DataDefinition.FormulaFields
FormulaField = FormulaFields.Item(0)
FormulaField.Text = "[formula text]"
CrystalReportViewer1.ReportSource = Report
End Sub
Ludek
Follow us on Twitter http://twitter.com/SAPCRNetSup
Got Enhancement ideas? Try the [SAP Idea Place|https://ideas.sap.com/community/products_and_solutions/crystalreports] -
Entity Framework Query - Unable to fetch data
I am working on a WPF application and using Entity framework 6.0
I have written following query to fetch data from database but could not fetch any data:
var customersList = context.Customers.Include(x => x.ReturnedCustomerItems.Select(y => y.ReturnedLotItem)).Where(x => x.IsDeleted != false).ToList();
Notes:
1. context: Database Context Object
2. Customers: DbSet for Customer's table
3. ReturnedCustomerItems: List of Customer Items to be returned.
4. ReturnedLotItem: Lot Item corresponding to Returned Customer Item. Each Customer Item will have a corresponding lot item..
Following is the SQL Query I have written to check whether data exits inside database:
select * from
transportapp.dbo.customer cust,
transportapp.dbo.ReturnedCustomerItem ret,
transportapp.dbo.ReturnedLotItem item
where
cust.CustomerId = ret.CustomerId
and ret.BookingItemId = item.BookingItemId
As output I got the following data records:
Following is the Table structure generated by Entity Framework:
CREATE TABLE [dbo].[ReturnedCustomerItem] (
[BookingItemId] INT NOT NULL,
[IsDeleted] BIT NOT NULL,
[CustomerId] INT NOT NULL,
[ReturnCharge] DECIMAL (18, 2) NOT NULL,
[DemurrageCharge] DECIMAL (18, 2) NOT NULL,
[Weight] DECIMAL (18, 2) NOT NULL,
[Quantity] INT NOT NULL,
[ReturnDate] DATETIME NOT NULL,
[Status] NVARCHAR (100) NULL,
CONSTRAINT [PK_dbo.ReturnedCustomerItem] PRIMARY KEY CLUSTERED ([BookingItemId] ASC),
CONSTRAINT [FK_dbo.ReturnedCustomerItem_dbo.Customer_CustomerId] FOREIGN KEY ([CustomerId]) REFERENCES [dbo].[Customer] ([CustomerId]) ON DELETE CASCADE,
CONSTRAINT [FK_dbo.ReturnedCustomerItem_dbo.ReturnedLotItem_BookingItemId] FOREIGN KEY ([BookingItemId]) REFERENCES [dbo].[ReturnedLotItem] ([BookingItemId])
CREATE TABLE [dbo].[ReturnedLotItem] (
[BookingItemId] INT NOT NULL,
[IsDeleted] BIT NOT NULL,
[IsReturned] BIT NOT NULL,
[ReturnCharge] DECIMAL (18, 2) NOT NULL,
[DemurrageCharge] DECIMAL (18, 2) NOT NULL,
[Weight] DECIMAL (18, 2) NOT NULL,
[Quantity] INT NOT NULL,
[LotId] INT NOT NULL,
[LotItemId] INT NOT NULL,
CONSTRAINT [PK_dbo.ReturnedLotItem] PRIMARY KEY CLUSTERED ([BookingItemId] ASC),
CONSTRAINT [FK_dbo.ReturnedLotItem_dbo.BookingItem_BookingItemId] FOREIGN KEY ([BookingItemId]) REFERENCES [dbo].[BookingItem] ([BookingItemId]),
CONSTRAINT [FK_dbo.ReturnedLotItem_dbo.ReturnedLot_LotId] FOREIGN KEY ([LotId]) REFERENCES [dbo].[ReturnedLot] ([LotId]) ON DELETE CASCADE,
CONSTRAINT [FK_dbo.ReturnedLotItem_dbo.LotItem_LotItemId] FOREIGN KEY ([LotItemId]) REFERENCES [dbo].[LotItem] ([BookingItemId]) ON DELETE CASCADE
I am unable to debug the LINQ expression where I am going wrong. Need help in identifying the mistake.
Thanks!!
NBThe best way of debugging the SQL is to change the where portion
1) First eliminate the 'where'
2) Run with only one where statement : cust.CustomerId
= ret.CustomerId
3) Run with the other where : ret.BookingItemId
= item.BookingItemId
Then compare the 3 results. Your database may not contain any data that has both where statements true.
jdweng -
EF database add new item from WPF datagrid
var ctx = new SomeEntities1();
TblStudentMission smm = new TblStudentMission();
TblStudentMission sm = e.Row.DataContext as TblStudentMission;
smm.Remark = sm.Remark;
smm.End_Mission = sm.End_Mission;
smm.EOD_Mission = sm.EOD_Mission;
smm.StudentId = sm.StudentId; //???null as sm.staffid is null
smm.TblMission.Mission_Name = sm.TblMission.Mission_Name; // ???null as tblmissionis null
sel.ctx1.TblStudentMission.Add(smm);tblstudentmission has missionidpk as foreign key from tblmission
Beautiful Distractions...Need help on how to approach this..adding new item to WPF datagrid, in Roweditending handler, i instantiate my entity to the datacontext of datagrid as below
var s = new TblStudentMission var sm = e.Row.DataContext as TblStudentMission;
problem is TblStudentMission has a foreign column MissionName that needs to be filled from datagrid entry but (sm.TblMission.MissionName) comes up as null,anyway of making it load. some type of eager loading?or any other approach welcome
Beautiful Distractions... -
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
We are trying to better understand customer views on social support experience, so your participation in this interview project would be greatly appreciated if you have time. Thanks for helping make community forums a great place.
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HERE to participate the survey. -
Guys i am using Entity Framework 5 code first (I am not using edmx) with Oracle and all works good, Now i am trying to get data from stored procedure which is under package but stored procedure have out param which is user define type, Now my question is
how i will call stored procedure from entity framework
Thanks in advance.I agree with you, but issue is we have lots of existing store procedure, which we need to call where damn required. I am sure those will be few but still i need to find out.
If you think you are going to get existing MS Stored Procedures or Oracle Packages that had nothing to do with the ORM previously to work that are not geared to do simple CRUD operations with the ORM and the database tables, you have a rude awakening
coming that's for sure. You had better look into using ADO.NET and Oracle Command objects and call those Oracle Packages by those means and use a datareader.
You could use the EF backdoor, call Oracle Command object and use the Packages, if that's even possible, just like you can use MS SQL Server Stored Procedures or in-line T-SQL via the EF backdoor.
That's about your best shot.
http://blogs.msdn.com/b/alexj/archive/2009/11/07/tip-41-how-to-execute-t-sql-directly-against-the-database.aspx -
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. -
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?
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