system.componentmodel.win32exception

try {
System.Diagnostics.Process myProc = new System.Diagnostics.Process();
myProc.StartInfo.FileName = "c:\nonexist.exe";  //Attempting to start a non-existing executable
myProc.Start();    //Start the application and assign it to the process component.    
}
catch(Win32Exception w) {
Console.WriteLine(w.Message);
Console.WriteLine(w.ErrorCode.ToString());
Console.WriteLine(w.NativeErrorCode.ToString());
Console.WriteLine(w.StackTrace);
Console.WriteLine(w.Source);
Exception e=w.GetBaseException();
Console.WriteLine(e.Message);
}