The type or namespace name 'IBM' could not be found (are you missing a using directive or an assembly reference?)

please help on below error
Compilation Error
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.
Compiler Error Message: CS0246: The type or namespace name 'IBM' could not be found (are you missing a using directive or an assembly reference?)
Source Error:
Line 27: using System.Web.Services;
Line 28: using System.Net;
Line 29: using IBM.WMQ;
Line 30: using System.DirectoryServices.AccountManagement;
Source File: c:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\TEMPLATE\LAYOUTS\NBO\LogComplaint.aspx.cs
Line: 29

Hello,
>>using IBM.WMQ
It seems you are using third party dll namespace reference in your project but that dll is not being added in project. Please get the IBM.WMQ dll and add it first in your current visual studio project by right click on project-->add reference.
You can place this dll in GAC or can directly add to project as suggested by jaydeep.
Hope it could help
Hemendra:Yesterday is just a memory,Tomorrow we may never see
Please remember to mark the replies as answers if they help and unmark them if they provide no help

Similar Messages

The type or namespace name 'SPSite' could not be found (are you missing a using directive or an assembly reference?)_

I am creating a Winforms application. I need to upload and download a file from Sharepoint.
I have added reference to Microsoft.Sharepoint.Client.
Below is the code to upload file:
using System.IO;
using Microsoft.SharePoint;
private void Button_Click_1(object sender, RoutedEventArgs e)
String fileToUpload = @"C:\Test.txt";
String sharePointSite = "https://myshapoint";
String documentLibraryName = "Test";
using (SPSite oSite = new SPSite(sharePointSite))
using (SPWeb oWeb = oSite.OpenWeb())
if (!System.IO.File.Exists(fileToUpload))
throw new FileNotFoundException("File not found.", fileToUpload);
SPFolder myLibrary = oWeb.Folders[documentLibraryName];
// Prepare to upload
Boolean replaceExistingFiles = true;
String fileName = System.IO.Path.GetFileName(fileToUpload);
FileStream fileStream = File.OpenRead(fileToUpload);
// Upload document
SPFile spfile = myLibrary.Files.Add(fileName, fileStream, replaceExistingFiles);
// Commit
myLibrary.Update();
But i get the error "The type or namespace name 'SPSite' could not be found (are you missing a using directive or an assembly reference?)"
I am not sure what else I am supposed to do here.

Hi,
If you want to develop a WinForm application to be only used in SharePoint Server, we can use Server-Side Object Model(use Microsoft.Sharepoint.dll) to achieve it.
If you want to use the WinForm application to be used both in Server side and Client Side, I suggest you use .Net Client Object Model(use Microsoft.Sharepoint.Client.dll) to achieve it.
Here are two links for your reference:
http://social.msdn.microsoft.com/Forums/sharepoint/en-US/c357e3c7-37e9-4ded-83aa-a57beae0b0e4/how-to-upload-download-files-to-sharepoint-2013?forum=sharepointdevelopment
http://msdn.microsoft.com/en-us/library/ff798388.aspx
Best Regards
Dennis Guo
TechNet Community Support

The type or namespace name 'SQLite' could not be found (are you missing a using directive or an assembly reference?)

Trying to get sql server compact up and running. I connected to a sqlite database and atuo generated the model.cs code.
however, I get the following error.
Error 1 The type or namespace name 'SQLite' could not be found (are you missing a using directive or an assembly reference?) C:\Users\kenny\Documents\Visual Studio 2013\Projects\WindowsFormsApplication2\WindowsFormsApplication1\Model.cs
3
Any help is greatly appreciated. Please provide some detail as I am novice.
Thanks

Ok so I got the past that problem. I had to add the package System.Data.SQLite Core in Manage NuGet.
Then I changed the auto-generated code "using SQLite" to "using System.Data.SQLite".
But now I have a new problem, it says "System.Data.SQLite.SQLiteConnection' does not contain a definition for 'CreateTable' "
Here is the code
//This code was generated by a tool.
//Changes to this file will be lost if the code is regenerated.
//using SQLite;
using System;
using System.Data.SQLite;
using System.Data.SQLite.EF6;
namespace WindowsFormsApplication2
public class SQLiteDb
string _path;
public SQLiteDb(string path)
_path = path;
public void Create()
using (SQLiteConnection db = new SQLiteConnection(_path))
db.CreateTable<servers>();
public partial class servers
public Int64 server_name { get; set; }
public Double cpu_usage { get; set; }
Any ideas why CreateTable is not available?

The type or namespace name 'Microsoft.SqlServer.DacServices' could not be found (are you missing a using directive or an assembly reference

Microsoft.SqlServer.DacServices dll is referenced in a unit test project and the compiler is showing an error - The type or namespace name 'DacServices' could not be found.
Although I referenced the dll file in the project visual studio is still errors out as a missing library. I have also tried downloading the file which has the library from http://www.microsoft.com/en-us/download/details.aspx?id=40735
by installing Microsoft Data-Tier Application Framework for SQl Server.
Please shade light on this.
Thanks,
Manny

Hi Manny_R,
According to your description and error message, before you installing Data-Teir Application Framework components, we need to verify if you choose the right version of Data-Tier Application Framework. For more information, see:
http://alexw.co.uk/2013/05/cannot-find-dac-assembly-microsoft-sqlserver-dac-dll/
In addition, Microsoft SQL Server Data-Tier Application Framework requires Microsoft SQL Server System CLR Types, and Microsoft SQL Server Transact-SQL ScriptDom (SQLSysCLRTypes.msi and SQLDOM.msi). You need to install both SQLSysCLRTypes.msi
and SQLDOM.msi.
There is a detail about data-tier application (DAC) features in SQL Server 2012, you can review it.
http://msdn.microsoft.com/en-us/library/cc879339(v=sql.110).aspx
Regards,
Sofiya Li
Sofiya Li
TechNet Community Support

C# compiling error: 'System.Array' does not contain a definition for 'Select' and no extension method 'Select' accepting a first argument of type 'System.Array' could be found (are you missing a using directive or an assembly reference?)

Hello experts,
I'm totally new to C#. I'm trying to modify existing code to automatically rename a file if exists. I found a solution online as follows:
string[] allFiles = Directory.GetFiles(folderPath).Select(filename => Path.GetFileNameWithoutExtension(filename)).ToArray();
string tempFileName = fileName;
int count = 1;
while (allFiles.Contains(tempFileName ))
tempFileName = String.Format("{0} ({1})", fileName, count++);
output = Path.Combine(folderPath, tempFileName );
string fullPath=output + ".xml";
However, it gives the following compilation errors
for the Select and Contain methods respectively.:
'System.Array' does not contain a definition for 'Select' and no extension method 'Select' accepting a first argument of type 'System.Array' could be found
(are you missing a using directive or an assembly reference?)
'System.Array' does not contain a definition for 'Contains' and no extension method 'Contains' accepting a first argument of type 'System.Array' could be
found (are you missing a using directive or an assembly reference?)
I googled on these errors, and people suggested to add using System.Linq;
I did, but the errors persist.
Any help and information is greatly appreciated.
P. S. Here are the using clauses I have:
using System;
using System.Data;
using System.Windows.Forms;
using System.IO;
using System.Collections.Generic;
using System.Text;
using System.Linq;

Besides your issue with System.Core, you also have a problem with the logic of our code, particularly your variables. It is confusing what your variables represent. You have an infinite loop, so the last section of code is never reached. Take a look
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
namespace consAppFileManipulation
class Program
static void Main(string[] args)
string fullPath = @"c:\temp\trace.log";
string folderPath = @"c:\temp\";
string fileName = "trace.log";
string output = "";
string fileNameOnly = Path.GetFileNameWithoutExtension(fullPath);
string extension = Path.GetExtension(fullPath);
string path = Path.GetDirectoryName(fullPath);
string newFullPath = fullPath;
string[] allFiles = Directory.GetFiles(folderPath).Select(filename => Path.GetFileNameWithoutExtension(filename)).ToArray();
string tempFileName = fileName;
int count = 1;
//THIS IS AN INFINITE LOOP
while (allFiles.Contains(fileNameOnly))
tempFileName = String.Format("{0} ({1})", fileName, count++);
//THIS CODE IS NEVER REACHED
output = Path.Combine(folderPath, tempFileName);
fullPath = output + ".xml";
//string fullPath = output + ".xml";
UML, then code

The type or namespace name 'PrincipalContext' could not be found

I am attempting to retrieve a user's full name from AD with the code below in .aspx using C#. I am using Sharepoint Designer 2010. I keep getting the error 'An error occurred during the compilation of the
requested file, or one of its dependencies. The type or namespace name 'PrincipalContext' could not be found (are you missing a using directive or an assembly reference?). What am I doing wrong?
@using System.IO;
@using System.DirectoryServices.AccountManagement;
@using System.DirectoryServices;
<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
    string fac1;
    string userid;
    string fname;
    string lname;
    string fullname;
    protected void btnShowInfo_Click(object sender, EventArgs e)
        try
            userid = GetHTTPContext();
        catch (Exception ex)
            Response.Write(ex.Message + "<BR>" + ex.StackTrace);
        finally
        using (PrincipalContext context = new PrincipalContext(ContextType.Domain));
                WindowsPrincipal principal = (WindowsPrincipal)User;
                UserPrincipal user = UserPrincipal.FindByIdentity(context, principal.Identity.Name);
                fname = user.GivenName;
                lname = user.Surname;
                fullname = user.Name;
                Response.Write(fname + " " + lname)
    private string GetHTTPContext()
        return(HttpContext.Current.User.Identity.Name);

I was able to fix the error by importing the namespaces and including the assemblies. That got me past the 'PrincipalContext' error.
Now I am getting an error on the line 'UserPrincipal user =...':
An error occurred during the
compilation of the requested file, or one of its dependencies. The name
'context1' does not exist in the current context
Here is the code:
            using( PrincipalContext context1 = new PrincipalContext(ContextType.Domain));
                WindowsPrincipal principal = (WindowsPrincipal)User;
                UserPrincipal user = UserPrincipal.FindByIdentity(context1, principal.Identity.Name);

The type or namespace name 'Skeleton' could not be found in V2.0 kinect

I Have Use kinect 2.0V and install and add toolkit and Use this Code.
then display error in "Skeleton" Class but same code already working 1.8V.
public interface ICommonProperty
Skeleton currentSkeleton
get;
set;

Hi Achal,
the Skeleton class in v1.8 was replaced with the Body class in v2.0. Just have a look at the Body example in the SDK Browser to see hot to use it.
There is also a tutorial of all sources introduced in v2.0 on Channel9:
http://channel9.msdn.com/Series/Programming-Kinect-for-Windows-v2/02
Greets!

The type or namespace name 'Optimization' does not exist in the namespace 'System.Web'

App_Start\BundleConfig.cs (1): The type or namespace name 'Optimization' does not exist in the namespace 'System.Web' (are you missing an assembly reference?)
Global.asax.cs (4): The type or namespace name 'Optimization' does not exist in the namespace 'System.Web' (are you missing an assembly reference?)
App_Start\BundleConfig.cs (8): The type or namespace name 'BundleCollection' could not be found (are you missing a using directive or an assembly reference?)
I'm getting the above errors when attempting to create a remote build.
I've tried the solution found here (http://blog.davidebbo.com/2014/01/the-right-way-to-restore-nuget-packages.html) but no luck.

Hi,
I have an asp.net mvc project in Visual Studio 2013. I'm hosting it on Visual Studio Online.
The project builds fine on my local machine/Visual Studio 2013. When i try to do a build on Visual Studio Online (i created a build definition there), i get similar errors.
App_Start\BundleConfig.cs (2): The type or namespace name 'Optimization' does not exist in the namespace 'System.Web' (are you missing an assembly reference?)
App_Start\FilterConfig.cs (2): The type or namespace name 'Mvc' does not exist in the namespace 'System.Web' (are you missing an assembly reference?)
App_Start\RouteConfig.cs (5): The type or namespace name 'Mvc' does not exist in the namespace 'System.Web' (are you missing an assembly reference?)
Controllers\HomeController.cs (5): The type or namespace name 'Mvc' does not exist in the namespace 'System.Web' (are you missing an assembly reference?)
Controllers\HomeController.cs (9): The type or namespace name 'Controller' could not be found (are you missing a using directive or an assembly reference?)
Global.asax.cs (5): The type or namespace name 'Mvc' does not exist in the namespace 'System.Web' (are you missing an assembly reference?)
Global.asax.cs (6): The type or namespace name 'Optimization' does not exist in the namespace 'System.Web' (are you missing an assembly reference?)
App_Start\BundleConfig.cs (9): The type or namespace name 'BundleCollection' could not be found (are you missing a using directive or an assembly reference?)
App_Start\FilterConfig.cs (8): The type or namespace name 'GlobalFilterCollection' could not be found (are you missing a using directive or an assembly reference?)
Controllers\HomeController.cs (11): The type or namespace name 'ActionResult' could not be found (are you missing a using directive or an assembly reference?)
Controllers\HomeController.cs (16): The type or namespace name 'ActionResult' could not be found (are you missing a using directive or an assembly reference?)
Controllers\HomeController.cs (23): The type or namespace name 'ActionResult' could not be found (are you missing a using directive or an assembly reference?)
C:\Program Files (x86)\MSBuild\12.0\bin\amd64\Microsoft.Common.CurrentVersion.targets (1697): Could not resolve this reference. Could not locate the assembly "System.Web.Helpers, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35,
processorArchitecture=MSIL". Check to make sure the assembly exists on disk. If this reference is required by your code, you may get compilation errors.
C:\Program Files (x86)\MSBuild\12.0\bin\amd64\Microsoft.Common.CurrentVersion.targets (1697): Could not resolve this reference. Could not locate the assembly "System.Web.Optimization". Check to make sure the assembly exists on disk. If this
reference is required by your code, you may get compilation errors.
C:\Program Files (x86)\MSBuild\12.0\bin\amd64\Microsoft.Common.CurrentVersion.targets (1697): Could not resolve this reference. Could not locate the assembly "System.Web.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL".
Check to make sure the assembly exists on disk. If this reference is required by your code, you may get compilation errors.
C:\Program Files (x86)\MSBuild\12.0\bin\amd64\Microsoft.Common.CurrentVersion.targets (1697): Could not resolve this reference. Could not locate the assembly "System.Web.WebPages, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35,
processorArchitecture=MSIL". Check to make sure the assembly exists on disk. If this reference is required by your code, you may get compilation errors.
C:\Program Files (x86)\MSBuild\12.0\bin\amd64\Microsoft.Common.CurrentVersion.targets (1697): Could not resolve this reference. Could not locate the assembly "System.Web.WebPages.Deployment, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35,
processorArchitecture=MSIL". Check to make sure the assembly exists on disk. If this reference is required by your code, you may get compilation errors.
C:\Program Files (x86)\MSBuild\12.0\bin\amd64\Microsoft.Common.CurrentVersion.targets (1697): Could not resolve this reference. Could not locate the assembly "System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35,
processorArchitecture=MSIL". Check to make sure the assembly exists on disk. If this reference is required by your code, you may get compilation errors.
C:\Program Files (x86)\MSBuild\12.0\bin\amd64\Microsoft.Common.CurrentVersion.targets (1697): Could not resolve this reference. Could not locate the assembly "WebGrease". Check to make sure the assembly exists on disk. If this reference is required
by your code, you may get compilation errors.
C:\Program Files (x86)\MSBuild\12.0\bin\amd64\Microsoft.Common.CurrentVersion.targets (1697): Could not resolve this reference. Could not locate the assembly "Antlr3.Runtime". Check to make sure the assembly exists on disk. If this reference
is required by your code, you may get compilation errors.
C:\Program Files (x86)\MSBuild\12.0\bin\amd64\Microsoft.Common.CurrentVersion.targets (1697): Could not resolve this reference. Could not locate the assembly "Newtonsoft.Json". Check to make sure the assembly exists on disk. If this reference
is required by your code, you may get compilation errors.
C:\Program Files (x86)\MSBuild\12.0\bin\amd64\Microsoft.Common.CurrentVersion.targets (1697): Assembly strong name "System.Web.Mvc, Version=__MvcPagesVersion__, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL" is
either a path which could not be found or it is a full assembly name which is badly formed. If it is a full assembly name it may contain characters that need to be escaped with backslash(\). Those characters are Equals(=), Comma(,), Quote("), Apostrophe('),
Backslash(\).

The type or namespace name 'VisualStudio' does not exist in the namespace 'Microsoft' (are you missing an assembly reference?)

we are using VS 2013. i have created new build definition and run that created build its getting failed and showing error message as "The type or namespace name 'VisualStudio' does not exist in the namespace 'Microsoft' (are you missing an assembly
reference?)" and "The type or namespace name 'WinComboBox, UITestControl, WinTitleBar.....etc' could not be found (are you missing a using directive or an assembly reference?)". in the error log is showing the error number are "error CS0234
& error CS0246".
Actually i have created build for automation execution from MTM lab environment. i have to assign the build to the test plan. once the build is passed , i will assign to the test plan and run with automation options.
if i build the solution its getting successfully build. but when i run the created build definition it show the error message's.
Could you guide me how to resolve the above error's ?
Thanks in Advance...

Hello Divakar Ponnada,
I have checked the error CS0234 from here:
http://msdn.microsoft.com/en-us/library/0e92xd7b.aspx
It means your project cannot find the proper reference to your type "Visual Studio" from the namespace Microsoft.
May I ask this question, does your build definition means something like the following blog described?
http://www.asp.net/web-forms/overview/deployment/configuring-team-foundation-server-for-web-deployment/creating-a-build-definition-that-supports-deployment
"A build definition is the mechanism that controls how and when builds occur for team projects in TFS. "
If that is the problem, may I ask whether your build agent is in the same machine where you build your application?
The build agent will first search for the reference from its local GAC and if it cannot find it, the error like you said will reports. Please manually build your project from your build agent machine to see the result, or install Visual Studio to your build
agent machine. In that way I think your problem may fixed.
Best regards,
Barry
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Error on new windows 8.1 project: The type or namespace name 'Foundation' does not exist in the namespace

I upgraded to win 8.1 and VS 2013. I created a new Windows 8.1 C# grid project and tried to compile it and I'm seeing the following error: Error 1 The type or namespace name 'Foundation' does not exist in the namespace [my namespace](are
you missing an assembly reference?)
The errors are in navigationhelper.cs line 59
[Windows.Foundation.Metadata.WebHostHidden] // Foundation has the squigglies
public class NavigationHelper : DependencyObject
and app.xaml.cs line 68 ==> rootFrame.Language = Windows.Globalization.ApplicationLanguages.Languages[0]; which causes this error: Error 2 The type or namespace name 'Globalization' does not exist in the namespace [my namespace] (are you missing
an assembly reference?)
Windows phone and mvc projects are working fine and I've installed all the updates and even tried to fix vs 2013.
Any help Is greatly appreciated.

I did some more investigation and noticed that if I create an app with a "." in the name then this problem occurs. For example create a windows store project with the default name "App1": this will compile.
However if I name the project "App1.Forms" to correspeond with the default namespace I want, then this problem occurs. Still investigating but anyone should be able to repro it with that step.

The type or namespace name 'BusinessData' does not exist in the namespace 'Microsoft.SharePoint' (are you missing an assembly reference?)

I am trying to compile my SharePoint 2010 solution(VS2010) in VS2013 to deploy in SP2013, i have removed all old 14 ref and added 15 ref for microsoft.SharePoint, office.server and other assemblies.
still i am getting "The type or namespace name 'BusinessData' does not exist in the namespace 'Microsoft.SharePoint'
(are you missing an assembly reference?)"
did i miss any step here or any version issue?
any suggestions to resolve
Thanks
S.Venkata Appaji

Hi,
Just confirm that Target Frame work has been changed to 4.5 or not, if not changed it to 4.5 and give it a try. Then also it gives error then check the SP reference, dll properties and check its version(it should be 15.0.).
PS:-You can fine target framework under project properties->Application-> Target Framework.
Regards,
MS

Managed c++ class - The type or namespace name could not be found

Hello,
I have a managed c++ class library project with the following attribute:
<TargetFrameworkVersion>v3.5</TargetFrameworkVersion>
That library is used from a C# project. If I change the C# framework to 4 they both compile fine.
If I set the C# framework to 3.5 the managed C++ class is not recognized and the C# project compilation fails with the following error :
Error XXX The type or namespace name 'XXX' could not be found (are you missing a using directive or an assembly reference?) C:\XXX.cs 19 7 XXX
Any idea about weird behavior? shouldn't it just work?
The C# project is using basic stuff, the same for the C++ project.
Cheers,
Javier Andres Caceres Alvis

Hello there,
After searching for a while I found this: "Everything is ok when I use for example .net 4.5 in c# and c++, but c# must be using 3.5 version. I read that I need to build c++ library in older visual studio (i tried 2005 and 2008)" here:
http://stackoverflow.com/questions/24364687/how-to-import-a-managed-c-library-to-c-sharp-app-target-net-version-3-5
I think that part of that statement is true because when I inspect the added reference (i.e.: the managed C++ project reference -also known as wrapper- from the C# class library) I see in the property tab that the runtime property value is v4.0.30319
-this is very weird, because the managed c++ project is set to compile with v3.5 and the same with the C# project but it seems that if VS2008 or VS2010 is not present then is compiled with the default version.
Thanks,
Javier Andres Caceres Alvis

The type or namespace name 'Reporting' does not exist in the namespace 'Microsoft' (are you missing an assembly reference?)

I have a Windows app that was built some 7 years ago on a WinXP machine using VS2005. It uses Crystal Reports for the reporting. We recently got new machines with Win7 x64 and I installed VS 2013 Pro. I moved the app to my machine and upgraded
it to that VS version. It previously had a .NET Framework target of version 2.0. I changed the target to version 4.5.
I want to use the MS Reporting instead of Crystal Reports. However, I cannot get the ReportViewer control to show up in the Toolbox.
I downloaded and installed the ReportViewer Runtime 2012. I installed the ReportViewer using the NuGen GUI and console. I tried adding the control to the Toolbox using Tools > Choose Toolbox Items... but it never shows up after I browse to
the Microsoft.ReportViewer.WinForms.dll file and select it. I manually typed 'Microsoft.Reporting.WinForms.ReportViewer' and the intellisense came up fine. But when I build the project I get the error shown in this post's title.
I'm at a complete loss. I've searched all over and tried everything I can find on the subject with no luck.
Can anybody help?
Thanks.

Thank you for taking the time.
The Report Viewer will not appear on the Toolbox, even with references to that assembly. However the Crystal Reports viewer IS in the Toolbox.
I think it may be because Crystal Reports is installed and integrated? I don't know. I just can't get it to work.
Thanks again.
Hello,
From
ReportViewer Controls (Visual Studio), we could get that ReportViewer Controls are included in VS2013, that means we don't need to install that control manually.
To confirm whether this issue is related to your Visual Studio or Crystal Reports, I would recommend you consider testing it with the following ways.
1. Create a simple windows form application, and open a form designer window, and check whether reportviewer is inside the tool box.
If it is available, then we could focus on your project to narrow down this issue.
If it is still missing, we could test it with #2.
2. Uninstall Crystal Reports and disable all add-ins of VS2013, and if possible, you could also uninstall and reinstall VS2013 to make sure the environment is clean enough. Next repeat the steps of #1.
It will be much helpful if you could share the detailed results with us.
Regards,
Carl
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The type or namespace name 'SharePoint' does not exist in the namespace 'Microsoft' (are you missing an assembly reference?)_

Hi,
am trying to use simple client object model using console application and have Included the required assembly
microsoft.sharepoint.client
microsoft.sharepoint.client.runtime
and added using directive microsoft.sharepoint.client
then also am getting the error plese help me
thanx in advance

Hi,
From the properties of the project solution, change the platform target to x64, and the target framework to .NET Framework 3.5.
Let me know if you have any doubt.

Experiencing "The type or namespace name 'DirectoryServices' does not exist in the namespace 'System' (are you missing an assembly reference?)" compilation error

I am just starting to implement a new user login authentication process wherein after prompting user for username & password, I hope to authenticate them againts our company Active Directory user data. Since I am just starting, I only have very few things
done at this point which is how I wanted to work on this so that my development environment is still at its simplest state.
I am using the following for development:
MS-Visual Studios Professional 2013 Version 12.0.30501.00 Update 2, and
MS .NET Framework Version 4.5.50938.
Here are my project solution's current items:
Web.config:
<?xml version="1.0"?>

<configuration>
<system.web>
<compilation debug="true" targetFramework="4.5" />
<httpRuntime targetFramework="4.5" />
</system.web>
<system.webServer>
<defaultDocument enabled="true">
<files>
<add value="Login.aspx" />
</files>
</defaultDocument>
</system.webServer>
</configuration>
Web.Debug.config:
<?xml version="1.0" encoding="utf-8"?>

<configuration xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform">

<system.web>
<compilation xdt:Transform="RemoveAttributes(debug)" />

</system.web>
</configuration>
Web.Assemblies.config:
<?xml version="1.0"?>
<configuration>
<system.web>
<compilation debug="false" targetFramework="4.5" />
<httpRuntime targetFramework="4.5" />
<assemblies>
<add assembly="System.DirectoryServices, Version=4.0.0.0, Culture=neutral PublicKeyToken=b03f5f7f11d50a3a"/>
</assemblies>
</system.web>
</configuration>
Login.aspx:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Login.aspx.cs" Inherits="Login" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div id="loginForm" style="height: 562px; width: 399px; margin-left: 0px" title="Login Form">
    
<asp:Label ID="loginPageLabel" runat="server" Font-Bold="True" Font-Names="Arial Black" Font-Size="Large" Text="Please Log In"></asp:Label>
<br />
<br />
        
<asp:Label ID="loginUsernameLabel" runat="server" Text="Username:"></asp:Label>
   
<asp:TextBox ID="loginUserNameTextBox" runat="server" OnTextChanged="loginUserNameTextBox_TextChanged" Width="213px" Wrap="False" AutoPostBack="True" TabIndex="1"></asp:TextBox>
<br />
<br />
        
<asp:Label ID="loginPasswordLabel" runat="server" Text="Password:"></asp:Label>
   
<asp:TextBox ID="loginPasswordTextBox" runat="server" OnTextChanged="loginPasswordTextBox_TextChanged" Width="212px" Wrap="False" AutoPostBack="True" TabIndex="2"></asp:TextBox>
<br />
<br />
                           
<asp:RadioButton ID="loginUAradioButton" runat="server" Font-Bold="True" OnCheckedChanged="loginUAradioButton_CheckedChanged" Text="TUPSS Associate" AutoPostBack="True" TabIndex="3" />
  
<asp:RadioButton ID="loginAFradioButton" runat="server" Font-Bold="True" OnCheckedChanged="loginAFradioButton_CheckedChanged" Text="Area Franchisee" AutoPostBack="True" TabIndex="4" />
<br />
<br />
<br />
                            
<asp:Button ID="loginSubmitButton" runat="server" Font-Bold="True" OnClick="loginSubmitButton_Click" Text="Log In" TabIndex="5" />
               
<asp:Button ID="loginCancelButton" runat="server" Font-Bold="True" OnClick="loginCancelButton_Click" Text="Cancel" TabIndex="6" />
<br />
<br />
  
<asp:Label ID="loginStatusInstructionLabel" runat="server" Text="Status/Instruction:"></asp:Label>
<br />
  
<asp:TextBox ID="loginStatusInstructionTextBox" runat="server" Height="230px" MaxLength="100" Rows="12" TextMode="MultiLine" Width="360px" EnableViewState="False" OnTextChanged="loginStatusInstructionTextBox_TextChanged" ReadOnly="True" TabIndex="-1"></asp:TextBox>
</div>
</form>
</body>
</html>
Login.aspx.cs:
using System;
using System.DirectoryServices;
public partial class Login : System.Web.UI.Page
private string uName; // user-entered username
private string pWord; // user-entered password
private int loginLoadCycles; // just keeping track of how many times Page_Load is called
protected void Page_Load(object sender, EventArgs e)
if (this.loginUserNameTextBox.Text == String.Empty &&
this.loginPasswordTextBox.Text == String.Empty &&
this.loginUAradioButton.Checked == false &&
this.loginAFradioButton.Checked == false)
this.loginInit();
this.setLoginVisibilityAndFocus();
this.loginLoadCycles += 1;
private void loginInit()
this.uName = String.Empty;
this.pWord = String.Empty;
this.loginLoadCycles = 0;
private void setLoginVisibilityAndFocus()
// Decide on whether or not the Login submit & cancel buttons should be enabled or not
if ( this.loginUserNameTextBox.Text == String.Empty ||
(this.loginUAradioButton.Checked == false && this.loginAFradioButton.Checked == false) )
this.loginSubmitButton.Enabled = false;
this.loginCancelButton.Enabled = false;
this.loginStatusInstructionTextBox.Text = "Please specify if you are a TUPSS Associate or an Area Franchisee by checking either the 'TUPSS Associate' or 'Area Franchisee' checkbox.";
else
this.loginSubmitButton.Enabled = true;
this.loginCancelButton.Enabled = true;
if (this.loginPasswordTextBox.Text == String.Empty)
this.loginStatusInstructionTextBox.Text = "Now that you have entered your username & type, please enter your password.";
else
this.loginStatusInstructionTextBox.Text = "When you are ready, please select either the Log In button to login, or the Cancel button to abort.";
if (this.loginUAradioButton.Checked == false && this.loginAFradioButton.Checked == false)
this.SetFocus(this.loginUAradioButton);
else if (this.loginUserNameTextBox.Text == String.Empty)
this.SetFocus(this.loginUserNameTextBox);
else if (this.loginPasswordTextBox.Text == String.Empty)
this.SetFocus(this.loginPasswordTextBox);
else
this.SetFocus(this.loginSubmitButton);
protected void loginUserNameTextBox_TextChanged(object sender, EventArgs e)
protected void loginPasswordTextBox_TextChanged(object sender, EventArgs e)
// For some reason, after specifying that the password entry box's textmode to 'Password' setting,
// the UI's password textbox is emptied
this.loginStatusInstructionTextBox.Text = "NOTICE:\nThis application is still under development.\n\n" +
"This is why the password you entered is visible. Once this portion of the application is ready, it will be masked.\n\n" +
"Also, still need to figure out why when changing this to Password entry mode to mask its entered data, password is getting reset.";
protected void loginSubmitButton_Click(object sender, EventArgs e)
this.loginLoadCycles = 0;
this.uName = this.loginUserNameTextBox.Text;
this.pWord = this.loginPasswordTextBox.Text;
if (this.loginUAradioButton.Checked == true && this.loginAFradioButton.Checked == false)
this.loginLADPauthenticate('U'); // authenticate UPS Associates against UPS Corp's Active Directory
else if (this.loginUAradioButton.Checked == false && this.loginAFradioButton.Checked == true)
this.loginLADPauthenticate('A'); // authenticate Area Franchisees against UPS Store's iNet Active Directory
else
// set colors to show that this is an error instead of a status message or instruction
this.loginStatusInstructionTextBox.Text = "ERROR: Cannot log in without specifying if you are an UPS Associate or an Area Franchisee!";
protected void loginCancelButton_Click(object sender, EventArgs e)
this.loginStatusInstructionTextBox.Text = "You have selected to cancel from logging in...";
// Still need to plan what to do when user cancels out of logging in. For now, just initialize class attributes
this.loginInit();
protected void loginUAradioButton_CheckedChanged(object sender, EventArgs e)
String msg = String.Empty;
if (this.loginUAradioButton.Checked == true)
this.loginAFradioButton.Checked = false;
msg = "Thanks for specifying that you are a TUPSS Associate. ";
if (this.loginUserNameTextBox.Text == String.Empty)
msg += "Now please specify your username.";
else if (this.loginPasswordTextBox.Text == String.Empty)
msg += "Now please enter your password.";
this.loginStatusInstructionTextBox.Text = msg;
protected void loginAFradioButton_CheckedChanged(object sender, EventArgs e)
String msg = String.Empty;
if (this.loginAFradioButton.Checked == true)
this.loginUAradioButton.Checked = false;
msg = "Thanks for specifying that you are an Area Franchisee. ";
if (this.loginUserNameTextBox.Text == String.Empty)
msg += "Now please specify your username.";
else if (this.loginPasswordTextBox.Text == String.Empty)
msg += "Now please enter your password.";
this.loginStatusInstructionTextBox.Text = msg;
private void loginLADPauthenticate(char whichActiveDirectory)
String msg = "Authenticating user '" + this.uName + "' with password '" + this.pWord + "' against ";
if (whichActiveDirectory == 'U')
msg += "UPS Corp's Active Directory...";
else if (whichActiveDirectory == 'A')
msg += "The UPS Store's Franchisee Active Directory...";
msg += "\n\nNOTICE:\nThis is still under development.\n\nAt this point, this application is supposed to do something else now but is not yet ready.";
this.loginStatusInstructionTextBox.Text = msg;
this.loginStatusInstructionTextBox.AutoPostBack = true;
// Authenticate using LDAP
protected void loginStatusInstructionTextBox_TextChanged(object sender, EventArgs e)
I confirmed that I have System.DirectoryServices.dll located in
C:\Windows\Microsoft.NET\assembly\GAC_MSIL\v4.0_4.0.0.0__b03f5f7f11d50a3a\ folder and that I as well as System have read as well as read&execute privileges
not only to all folders in its path but also to the DLL file itself.
I would appreciate any help in trying to resolve this compilation error so that I can proceed with implementing LDAP features for this endeavor.
Thanks so much,
hguico @ The UPS Store

Hi,
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The type or namespace name 'IBM' could not be found (are you missing a using directive or an assembly reference?)

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