WPF MessageBox window style

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According to this page, WPF picks up the old styles for some of the controls.

To get rid of it, you have to create a custom app.manifest file (Add -> New item -> Application Manifest File) and paste the following code in it (right after the /trustInfo – Tag ): 

<!-- Activate Windows Common Controls v6 usage (XP and Vista): -->
<dependency>
  <dependentAssembly>
    <assemblyIdentity
      type="win32"
      name="Microsoft.Windows.Common-Controls"
      version="6.0.0.0"
      processorArchitecture="*"
      publicKeyToken="6595b64144ccf1df"
      language="*"/>
  </dependentAssembly>
</dependency>

Then you have to compile your solution with this app.manifest (set it in the project properties -> Application -> Point to the new manifest in “Icons and manifest”).

If you start your application now it should look like the WinForms- MessageBox.

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