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System.EntryPointNotFoundException: Entry point was not found. when unit testing html helpers

Posted By:      Posted Date: August 27, 2010    Points: 0   Category :ASP.Net

I'm trying to unit test a very simple html helper but keep getting the following exception:

System.EntryPointNotFoundException: Entry point was not found.

public static string AdditionalUsersDropDownList( this HtmlHelper helper, int additionalUsers )


Dictionary<int, string> items = new Dictionary<int, string>( );

items.Add( 0, "None" );

for ( int i = 1; i <= 30; i++ )


items.Add( i, i.ToString( ) );


SelectList list =  new SelectList( items, "Key", "Value", additionalUsers );

return helper.DropDownList( "AdditionalUsers", list );


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