Checking if a Property 'Starts/Ends With' in a csproj

Question

I'm setting up some configurations in my csproj files that will target different framework versions. Ideally I want configurations of 'Debug - 3.5', 'Debug - 4.0', 'Release - 3.5' and 'Release - 4.0'.

In my csproj file I want to do something like the following:

<PropertyGroup Condition=" '${Configuration}' ends with '3.5' ">
    <TargetFrameworkVersion>v3.5</TargetFrameworkVersion>
</PropertyGroup
<PropertyGroup Condition=" '${Configuration}' ends with '4.0' ">
    <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
</PropertyGroup
... check for "starts with Debug" to define Optimize etc.

However, I don't know how to go about checking that ${Configuration} starts/ends with a particular string. Is there an easy way to do this?

Edit: Marked answer below for pointing me in the right direction, which lead me to go with:

<PropertyGroup Condition="$(Configuration.Contains('Debug'))">
    ... setup pdb, optimize etc.
</PropertyGroup>
<PropertyGroup Condition="$(Configuration.Contains('3.5'))">
    ... set target framework to 3.5
</PropertyGroup>
... and so on for Release and 4.0 variations

Answer 1

An MSBuild property is just a .NET String and has property functions available.

Condition="$(Configuration.EndsWith('3.5'))"

Should work