Server Error in '/' Application.
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Overload resolution failed because no Public 'LCase' can be called with these arguments:
   'Public Shared Function LCase(Value As Char) As Char':
       Argument matching parameter 'Value' cannot convert from 'DBNull' to 'Char'.
   'Public Shared Function LCase(Value As String) As String':
       Argument matching parameter 'Value' cannot convert from 'DBNull' to 'String'. 
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.Reflection.AmbiguousMatchException: Overload resolution failed because no Public 'LCase' can be called with these arguments:
   'Public Shared Function LCase(Value As Char) As Char':
       Argument matching parameter 'Value' cannot convert from 'DBNull' to 'Char'.
   'Public Shared Function LCase(Value As String) As String':
       Argument matching parameter 'Value' cannot convert from 'DBNull' to 'String'.

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: 


[AmbiguousMatchException: Overload resolution failed because no Public 'LCase' can be called with these arguments:
    'Public Shared Function LCase(Value As Char) As Char':
        Argument matching parameter 'Value' cannot convert from 'DBNull' to 'Char'.
    'Public Shared Function LCase(Value As String) As String':
        Argument matching parameter 'Value' cannot convert from 'DBNull' to 'String'.]
   Microsoft.VisualBasic.CompilerServices.OverloadResolution.ResolveOverloadedCall(String MethodName, List`1 Candidates, Object[] Arguments, String[] ArgumentNames, Type[] TypeArguments, BindingFlags LookupFlags, Boolean ReportErrors, ResolutionFailure& Failure) +549
   Microsoft.VisualBasic.CompilerServices.OverloadResolution.ResolveOverloadedCall(String MethodName, MemberInfo[] Members, Object[] Arguments, String[] ArgumentNames, Type[] TypeArguments, BindingFlags LookupFlags, Boolean ReportErrors, ResolutionFailure& Failure) +99
   Microsoft.VisualBasic.CompilerServices.NewLateBinding.ResolveCall(Container BaseReference, String MethodName, MemberInfo[] Members, Object[] Arguments, String[] ArgumentNames, Type[] TypeArguments, BindingFlags LookupFlags, Boolean ReportErrors, ResolutionFailure& Failure) +145
   Microsoft.VisualBasic.CompilerServices.NewLateBinding.LateGet(Object Instance, Type Type, String MemberName, Object[] Arguments, String[] ArgumentNames, Type[] TypeArguments, Boolean[] CopyBack) +594
   ASP.it_config_aspx.__Render__control1(HtmlTextWriter __w, Control parameterContainer) +4916
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +256
   System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +19
   System.Web.UI.Page.Render(HtmlTextWriter writer) +29
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +99
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1266

 


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Version Information: Microsoft .NET Framework Version:2.0.50727.3615; ASP.NET Version:2.0.50727.3618