Server Error in '/' Application.

Item has already been added. Key in dictionary: 'LanguageName'  Key being added: 'LanguageName'

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.ArgumentException: Item has already been added. Key in dictionary: 'LanguageName'  Key being added: 'LanguageName'

Source Error:

The source code that generated this unhandled exception can only be shown when compiled in debug mode. To enable this, please follow one of the below steps, then request the URL:

1. Add a "Debug=true" directive at the top of the file that generated the error. Example:

  <%@ Page Language="C#" Debug="true" %>

or:

2) Add the following section to the configuration file of your application:

<configuration>
   <system.web>
       <compilation debug="true"/>
   </system.web>
</configuration>

Note that this second technique will cause all files within a given application to be compiled in debug mode. The first technique will cause only that particular file to be compiled in debug mode.

Important: Running applications in debug mode does incur a memory/performance overhead. You should make sure that an application has debugging disabled before deploying into production scenario.

Stack Trace:


[ArgumentException: Item has already been added. Key in dictionary: 'LanguageName'  Key being added: 'LanguageName']
   System.Collections.Hashtable.Insert(Object key, Object nvalue, Boolean add) +14583981
   SnT.eGovernment.DataAccess.UserDataSetService.LanguageService..ctor(Database db) +214
   SnT.eGovernment.DataAccess.Admin.LanguageDA.LoadLanguageByPK(Int32 languageId) +42
   SnT.eGovernment.Web.ProjectCommon.BaseWebPage.InitializeCulture() +23
   ASP.default_aspx.__BuildControlTree(default_aspx __ctrl) +168
   ASP.default_aspx.FrameworkInitialize() +59
   System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +52
   System.Web.UI.Page.ProcessRequest() +79
   System.Web.UI.Page.ProcessRequest(HttpContext context) +74
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +542
   System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +75
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +93


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4682.0