901222 - Silverlight application throws an exception in xaml when running

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hi i don't know what change i made that caused my program not to work anymore. when running it say:

A first chance exception of type 'System.Windows.Markup.XamlParseException' occurred in System.Windows.dll
Additional information: The invocation of the constructor on type 'gis.GISViewModel' that matches the specified binding constraints threw an exception. [Line: 12 Position: 33]

in the xaml, the location is where i instantiate from view model. it seems that i can't instantiate from view model, because when i created an instance in code-behind it also raised an exception.
i thought it might be because i separated view model class in more than one source file and used partial keyword for it. but when i rejoined the files i got no change.
any clue?
thx

Posted 12-Mar-12 1:50am

ilostmyid2

Updated 12-Mar-12 1:53am

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Ganesan Senthilvel · Answer 1 · 2012-03-12T16:07:00

Here are my suggestions that you could try:

1.Check if you have enabled unmanaged debugging (in Project Properties -> Debug)
2.Find out if there are any dependencies your C++/CLI DLL where the Winforms control is implemented and if those dependencies cannot be resolved.
In order to find out dependencies on native DLLs, you should use the tool Dependency Walker (depends.exe). .NET Reflector will only examine managed dependencies.
3.Comment out code of your User Control step by step and try again.
4.Use Gflags.exe to turn on Loader Snaps