MsBuild/MsBuildExample/MyCustomBuildTask/build/MyCustomBuildTask.props

<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
	<!--defining properties interesting for my task-->
	<PropertyGroup>
		<!--Reference to the assembly which contains the MSBuild Task-->
		<CustomTasksAssembly>$(MSBuildThisFileDirectory)..\lib\netstandard2.0\$(MSBuildThisFileName).dll</CustomTasksAssembly>
	</PropertyGroup>

	<UsingTask TaskName="$(MSBuildThisFileName).SimpleTask3"  AssemblyFile="$(CustomTasksAssembly)" />
</Project>