How does default/relative path resolution work in .NET?

`System.IO.Directory.SetCurrentDirectory( System.AppDomain.CurrentDomain.BaseDirectory );`

Assembly ass = Assembly.GetEntryAssembly();
string dir = ass.Location;
string filename = Path.Combine( dir, "CAISLog.csv" );

Assembly ass = Assembly.GetAssembly( typeof( AClassInYourAssembly ) );