Please refer to the Microsoft documentation, which explains it very clearly.

https://learn.microsoft.com/en-us/visualstudio/modeling/code-generation-in-a-build-process?view=vs-2022&tabs=csharp

Add this configuration to the project file (Example.csproj):

<Import Project="$(MSBuildExtensionsPath)\Microsoft\VisualStudio\v17.0\TextTemplating\Microsoft.TextTemplating.targets" />

<PropertyGroup>
    <TransformOnBuild>true</TransformOnBuild>
    <TransformOutOfDateOnly>false</TransformOutOfDateOnly>
</PropertyGroup>