[ACCEPTED]-Overwrite properties with MSBuild-msbuild

Accepted answer

Score: 17

Mehmet is right about how to set a property 4 value from another property, but there is 3 a bug/feature in MSBuild which means that 2 if you call CreateProperty and CallTarget in the same Target, your new property will not be globally available to other targets (described here).

So here is the final solution to the 1 problem:

<PropertyGroup>
   <DeployPath_TEST>\\test-server-path\websites\mysite</DeployPath_TEST>
   <DeployPath_LIVE>\\live-server-path\websites\mysite</DeployPath_LIVE>
   <DeployPath></DeployPath>
</PropertyGroup>

<Target Name="SetDeployPath-TEST">
  <CreateProperty Value="$(DeployPath_TEST)">
    <Output TaskParameter="Value" PropertyName="DeployPath"/>
  </CreateProperty>
</Target>

<Target Name="Deploy-TEST">
   <CallTarget Targets="SetDeployPath-TEST"/>
   <CallTarget Targets="Deploy-Sub"/>
</Target>

<Target Name="Deploy-Sub">
  <Message Text="Deploying to $(DeployPath)"/>
  <MSBuild Projects="MySolution.csproj" Targets="Rebuild" />

  <ItemGroup>
    <MyFiles Include="**\*"/>
  </ItemGroup>

  <Copy SourceFiles="@(MyFiles)" 
     DestinationFiles="@(MyFiles->'$(DeploymentPath)\%(RecursiveDir)%(FileName)%(Extension)')"/>

</Target>

Score: 9

You can use CreateProperty task to overwrite the value 1 of an existing property.

<Target Name="Deploy-LIVE">   
  <CreateProperty Value="$(DeployPath_LIVE)">
    <Output PropertyName="DeployPath" TaskParameter="Value"/>
  </CreateProperty>
  <CallTarget Targets="Deploy-Sub"/>
</Target>

Score: 4

I typically avoid the CallTarget task. Much better 1 is to use target dependencies.

Score: 0

Besides, you can use following way:

<PropertyGroup>
   <DeployPath_TEST>\\test-server-path\websites\mysite</DeployPath_TEST>
   <DeployPath_LIVE>\\live-server-path\websites\mysite</DeployPath_LIVE>
   <DeployPath></DeployPath>
</PropertyGroup>

<Target Name="SetDeployPath-TEST">
  <CreateProperty Value="$(DeployPath_TEST)">
    <Output TaskParameter="Value" PropertyName="DeployPath"/>
  </CreateProperty>
</Target>

<Target Name="Deploy-Sub" DependsOnTargets="SetDeployPath-TEST">
  <Message Text="Deploying to $(DeployPath)"/>
  <MSBuild Projects="MySolution.csproj" Targets="Rebuild" />

  <ItemGroup>
    <MyFiles Include="**\*"/>
  </ItemGroup>

  <Copy SourceFiles="@(MyFiles)" 
     DestinationFiles="@(MyFiles->'$(DeploymentPath)\%(RecursiveDir)%(FileName)%(Extension)')"/>

</Target>

Source: stackoverflow.com

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