public MultiTargetingSample()
{
_baseDirectory = new Directory(Properties.CurrentDirectory);
_compileDirectory = _baseDirectory.SubFolder("compile");
_outputAssembly = _compileDirectory.File("output.dll");
AddTask(Clean);
AddTask("Compile .NET 2.0", Compile_20);
AddTask(Clean);
AddTask("Compile .NET 3.0", Compile_30);
}