Exception Message Details

Value An item with the same key has already been added.
Resource ID Argument_AddingDuplicate
DLL mscorlib.dll
Version 4.0.60310.0

This webpage provides developers with Silverlight exception message text, which can be useful in diagnosing failures and problems with Silverlight applications. Some exception strings contain tokens for additional information produced by your application.

To see these descriptive error messages on your local machine and obtain other debugging resources, please install the latest version of Silverlight for Developers on your Windows or Mac computer.