https://www.cnblogs.com/ponus/p/11046624.html#!comments

You can visit the original author’s blog and github by following the link above.

Here, the problems encountered during project migration were recorded according to my own situation.

Multi-version Project Construction

  1. After creating a new project, open the configuration manager to create compilation managers for multiple versions
![Image Description](https://cdn.bimath.com/blog/pg/Snipaste_2026-01-04_17-08-45.png)
  1. Unload the original project, open the *.csproj file, add nodes according to the version number, you can limit the framework version compiled here, and the compilation here can modify ‘Any CPU’ to x64
1
2
<PlatformTarget>x64</PlatformTarget>
<TargetFrameworkVersion>v4.6</TargetFrameworkVersion>

  1. After setting all versions in turn, you can continue to add references needed at the beginning of the project in <ItemGroup>, Here I put Revit’s ManagedMC3 file in together, because there will be cases where the file version is inconsistent with the RevitAPI version, if the encrypted assembly will report an error

  2. Configuration File

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<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
    <ProjectGuid>{FBBB7AFE-3CF9-42D9-A95C-0BD2CF3CAC3D}</ProjectGuid>
    <OutputType>Library</OutputType>
    <AppDesignerFolder>Properties</AppDesignerFolder>
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    <AssemblyName>ReCheckModelAllPlatform</AssemblyName>
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    </Reference>
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    <Page Include="ExternalWindow\SignIn.xaml">
      <Generator>MSBuild:Compile</Generator>
      <SubType>Designer</SubType>
    </Page>
    <Page Include="ExternalWindow\TreeViewWindow.xaml">
      <Generator>MSBuild:Compile</Generator>
      <SubType>Designer</SubType>
    </Page>
  </ItemGroup>
  <ItemGroup>
    <None Include="Connected Services\ServiceReference1\Reference.svcmap">
      <Generator>WCF Proxy Generator</Generator>
      <LastGenOutput>Reference.cs</LastGenOutput>
    </None>
    <None Include="Connected Services\ServiceReference1\configuration.svcinfo" />
    <None Include="Connected Services\ServiceReference1\configuration91.svcinfo" />
    <Content Include="Resource\back.png" />
    <Content Include="Resource\Check.png" />
    <Content Include="Resource\Check_Large.png" />
    <Content Include="Resource\Export.png" />
    <Content Include="Resource\Export_Large.png" />
    <Content Include="Resource\Filter.png" />
    <Content Include="Resource\Filter_Large.png" />
    <Content Include="Resource\go.png" />
    <Content Include="Resource\Hide.png" />
    <Content Include="Resource\Hide_Large.png" />
    <Content Include="Resource\Register.png" />
    <Content Include="Resource\Register_Large.png" />
    <Content Include="Resource\Select.png" />
    <Content Include="Resource\Select_Large.png" />
  </ItemGroup>
  <ItemGroup>
    <WCFMetadataStorage Include="Connected Services\ServiceReference1\" />
  </ItemGroup>
  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
</Project>
  1. Open the project at this time, switch the configuration manager to load the Revit assembly according to the corresponding version and compile according to the specified framework version

Project Migration

  1. Because there is already a single version project, so copy the single version file to the folder, click the icon in the picture, right click in the folder location to include it in the project
![Image Description](https://cdn.bimath.com/blog/pg/Snipaste_2026-01-04_17-08-35.png)
2. The project migration also needs to modify the namespace, changing it to the namespace of the current project. Use `Ctrl + .` shortcut keys in vs. I installed jetbrains resharper, use `Alt + Enter` shortcut keys. 3. Adding local resources reports an error, unable to use `ReCheckModelAllPlatform.Properties.Resources.*` Access image, click Properties -> Resources -> Image, and modify the customization on the right to `internal`.
![Image Description](https://cdn.bimath.com/blog/pg/Snipaste_2026-01-04_17-08-30.png)