How do I remove auto generated files from a folder

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I have the below MSBuild to generate .cs files from my proto files. The build works fine until I do a rebuild where it complains of Source file 'generated-proto-output/Trade.cs# specified multiple times.

How do I delete my .cs files before building/rebuilding everytime?

Error

Severity Code Description Project File Line Suppression State Warning CS2002 Source file 'generated-proto-output\ErrorTrade.cs' specified multiple times MyComp.Trade.Model C:\dev\workspaces\trade-model-workspace\model\csharp\MyComp.Trade.Model

build snippet in csproj file

<ItemGroup>
    <Protobuf Remove="%(RelativePath)generated-proto-output/**/*.cs" />
    <Protobuf Include="../../proto/**/*.proto" ProtoRoot="../../proto/" OutputDir="%(RelativePath)generated-proto-output/" GrpcServices="None" />
    <Protobuf Update="../../proto/**/*Service.proto" GrpcServices="Both" />
  </ItemGroup>

What I have tried:

I tried using Remove to remove the *.cs files but that does not delete the files.
How can I delete files in a folder before the build/rebuild kick starts?

I also tried the below but that did not work

  <ItemGroup>  
     <FilesToDelete Include="%(RelativePath)generated-proto-output/*.*" />
    <Protobuf Include="../../proto/**/*.proto" ProtoRoot="../../proto/" OutputDir="%(RelativePath)generated-proto-output/" GrpcServices="None" />
    <Protobuf Update="../../proto/**/*Service.proto" GrpcServices="Both" />
  </ItemGroup>  
<Delete Files="@(FilesToDelete)" />

Posted 26-Mar-19 4:43am

Member 14197773

Updated 26-Mar-19 7:35am

v2

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RickZeeland · Answer 1 · 2019-03-26T07:35:00

Solution 1

Maybe you can use a build automation tool like Cake, see overview here: https://www.slant.co/topics/4014/~make-based-build-automation-tools[^]

Posted 26-Mar-19 7:35am

RickZeeland

Comments

Member 14197773 27-Mar-19 4:13am

I actually moved away from cake to MSBuild. I would hope MSBuild supports something like this otherwise I dont see the point in MsBuild being marketed as a build tool. I come from the java world, so its a bit surprising that things arent that easy with csharp.