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c#t4t4mvc

T4MVC is generating T4MVC.cs and T4MVC1.cs

  • VS2017 15.4.1

I have been using T4MVC] for many months in this project without issue. However today each time I change a controller method it is generating two T4MVC files:

enter image description here

instead of updating T4MVC.cs which ultimately means the project wont't compile and I have to delete T4MVC1.cs.

Has anyone seen this behaviour or has some ideas of a fix?

Solution

  • Here's the steps I do to fix it:

    • Delete T4MVC1.cs file.
    • Unload your project.
    • Edit the .csproj file.

    • Check the following tag:

      <Compile Include="T4MVC.cs"> <AutoGen>True</AutoGen> <DesignTime>True</DesignTime> <DependentUpon>T4MVC.tt</DependentUpon> </Compile>

      Make sure there's only one of these and it's T4MVC.cs. Remove T4MVC1.cs block if you have it.

    • Check the following tag:

      <None Include="T4MVC.tt"> <Generator>TextTemplatingFileGenerator</Generator> <LastGenOutput>T4MVC.cs</LastGenOutput> </None>

      Make sure the <LastGenOutput> is T4MVC.cs. If not, edit it to be T4MVC.cs.

    • Save the .csproj file.

    • Reload the project.
    • Rebuild
    • Make sure to check in that code so won't cause any trouble in the future.