T4MVC is generating T4MVC.cs and T4MVC1.cs

Question

VS2017 15.4.1
- ASP.NET MVC 5.2.3
- T4MVC 4.0.0
- AutoT4MVC 1.5.3
- Resharper

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:

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?

Hi! what I usually do is delete the T4MVC.cs, T4MVC1.cs and all the generated.cs files and run the custom tool again. — Andoni Zubizarreta, Oct 20 '17 at 01:59

score 16 · Accepted Answer · answered Oct 31 '17 at 00:19

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.

Awesome solution. Worked perfectly. – TheEdge Nov 06 '17 at 03:16 — TheEdge, Nov 06 '17 at 03:16
It worked for me, at T4MVC 4.2.4, using NET Framework 4.7.2 – carloswm85 Mar 16 '23 at 13:32 — carloswm85, Mar 16 '23 at 13:32

T4MVC is generating T4MVC.cs and T4MVC1.cs

1 Answers1