Determine assembly version during a post-build event

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If (1) you don’t want to download or create a custom executable that retrieves the assembly version and (2) you don’t mind editing the Visual Studio project file, then there is a simple solution that allows you to use a macro which looks like this:

@(Targets->’%(Version)’)

@(VersionNumber)

To accomplish this, unload your project. If the project somewhere defines a <PostBuildEvent> property, cut it from the project and save it elsewhere temporarily (notepad?). Then at the very end of the project, just before the end-tag, place this:

<Target Name="PostBuildMacros">
  <GetAssemblyIdentity AssemblyFiles="$(TargetPath)">
    <Output TaskParameter="Assemblies" ItemName="Targets" />
  </GetAssemblyIdentity>
  <ItemGroup>
    <VersionNumber Include="@(Targets->'%(Version)')"/>
  </ItemGroup>
</Target>
<PropertyGroup>
  <PostBuildEventDependsOn>
    $(PostBuildEventDependsOn);
    PostBuildMacros;
  </PostBuildEventDependsOn>    
  <PostBuildEvent>echo HELLO, THE ASSEMBLY VERSION IS: @(VersionNumber)</PostBuildEvent>
</PropertyGroup>

This snippet has an example <PostBuildEvent> already in it. No worries, you can reset it to your real post-build event after you have re-loaded the project.

Now as promised, the assembly version is available to your post build event with this macro:

@(VersionNumber)

Done!

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