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Editorial Team
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Asked: 2026-05-20T15:39:44+00:00

I try and open a XAML file in a silverlight project, VS crashes. I

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I try and open a XAML file in a silverlight project, VS crashes.

I can create a new Silverlight project, and open XAML files in that new project no problem. However even if I create a new XAML file in my existing project VS still crashes, so my hunch is that it’s not the content of the XAML, but rather something else in the project.

Any suggestions on how to troubleshoot this further before I go down the laborious task of starting with an empty but working project, and adding the bits of the existing project until it crashes.

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1 Answer

  1. Editorial Team

    As it turns out my DesignTime ViewModel data was the source of the problem. I inject a design-time repository that populates various collections with suitable design-time data. After a bit of refactoring that was done around the same time as the Silverlight update was applied, I messed up one of the property setters. The validator throw the exception and these caused VS to crash.

    In the end I debugged this by starting a second instance of Visual Studio attaching the debugger to the first instance, and setting a bunch of breakpoints in my view model locator and design-time repository.

    I debated removing this question, but decided to leave it up, with this answer as I suspect I’m not the first person to have VS crash for no apparent reason.

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