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Editorial Team
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Asked: 2026-06-15T10:10:20+00:00

Using Windows 7 and Visual Studio 2010, I am writing a C# custom UserControl.

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Using Windows 7 and Visual Studio 2010, I am writing a C# custom UserControl. I was coding in code view for weeks and recently when I tried to switch to design mode, Visual Studio hanged, “NOT RESPONDING”. I can wait for an hour, and still nothing happens. Clicking on the close button it gives the “Do you want to wait, close, restart and send information to Microsoft” dialog.

Is there a way to (stack)trace the code that the designer is trying to execute? Maybe design-time trace messages or breakpoints?

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1 Answer

  1. Editorial Team

    For Visual Studio 2010/2013

    You can debug the Visual Studio designer itself!
    Open a second instance of Visual Studio, use the Tools -> Attach To Process and attach to the first Visual Studio (i.e. devenv.exe).

    In Visual Studio instance #2 (the one that you did the Attach To Process in): Put a breakpoint on your usercontrol’s constructor

    In Visual Studio instance #1 (the original one, that will get stuck):
    Open the designer which your usercontrol is in, the breakpoint in VS#2 will get hit.

    For Visual Studio 2012

    The process you want to debug is XDesProc.exe – see Dr. ABT’s answer. Otherwise the procedure is as for Visual Studio 2010/2013.

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