Dictionary.cs not found

[dongfengxin]

Description

You need to find Dictionary.cs to view the source for the current call stack frame

Reproduction Steps

Expected behavior

Run with no error

Actual behavior

Dictionary.cs not found

Regression?

No response

Known Workarounds

No response

Impact

No response

Configuration

No response

Other information

No response

[lindexi]

@dongfengxin The Dictionary.cs is defined in dotnet runtime not in wpf. I think your issues has been submitted to the wrong repo. How about bring to https://github.com/dotnet/runtime/

[MichaeIDietrich]

Dictionary.cs not found

This is the message Visual Studio displays when trying to debug the ArgumentNullException to load the source file where the exception occurred, but this has nothing to do with the error you are facing here.

Just putting screenshots of the exception stack is no steps to reproduce, that way no one can say, what's the root cause of this exception. Please try to add real reproduction steps.

By the way on the first glance it looks like your ItemsSource contains a null item or something else is null but shouldn't be.