我不知道在Visual Studio中执行此操作的方法，但是您可以在文本编辑器中编辑.csproj文件.您应该会找到类似这样的内容:

I don't know of a way to do it in visual studio, but you can edit your .csproj file in a text editor. You should find something like this:

<Page Include="MainWindow.xaml">
  <Generator>MSBuild:Compile</Generator>
  <SubType>Designer</SubType>
</Page>
<Compile Include="MainWindow.xaml.cs">
  <DependentUpon>MainWindow.xaml</DependentUpon>
  <SubType>Code</SubType>
</Compile>

这两个标记在文件中可能并不紧邻.重要的部分是<DependantUpon>标记.

The two tags might not be right next to each other in your file. The important part is the <DependantUpon> tag.

在文件中，找到具有include="ViewModel.cs"属性的标签.在此标记内，添加<DependantUpon>View.xaml</DependantUpon>作为子元素.现在，您的ViewModel.cs文件将始终位于View.xaml文件中.最后，您的文件应具有与以下代码段相似的内容:

In your file, find the tag with the include="ViewModel.cs" attribute. Inside of this tag, add <DependantUpon>View.xaml</DependantUpon> as a child element. Now your ViewModel.cs file will always be a inside the View.xaml file. In the end, your file should have these something similar to this snippet:

<Page Include="View.xaml">
  <SubType>Designer</SubType>
  <Generator>MSBuild:Compile</Generator>
</Page>
<Compile Include="ViewModel.cs">
  <DependentUpon>View.xaml</DependentUpon>
</Compile>