static void Main()
{
Program program = new Program();
// call the implemented methods
program.DisplayMessage();
program.WriteLog("stuff is written");
// access the interface as an object
IInfo info = (IInfo)program;
info.DisplayMessage();
info.WriteLog("second try");
// alternative syntax for accessing as object
IInfo info2 = program as IInfo;
info2.DisplayMessage();
info2.WriteLog("third try");
// call the explicit implementation
// this is allowed only through a reference for the interface
IInfo2 info21 = program;
Console.WriteLine(info21.DisplayMessage());
}