msbuild Getting started with msbuild Creating Custom MSBuild Targets

Example

<PropertyGroup>
     <!-- Definition of a Property named "TestCondition". A PropertyGroup may also be placed inside a Target. -->
    <TestCondition>True</TestCondition>
</PropertyGroup>

<!-- This Target will run after the "Clean" Target, subject to a Condition. -->
<Target Name="SpecificTarget" AfterTargets="Clean" Condition=" '$(TestCondition)' == 'True' ">
    <!-- Displaying a custom message -->
    <Message Text="Here is my Specific Target" Importance="Low" />
    <!-- Here come your specific code. -->
</Target>