C#: how to catch error code

Thank you bruintje,
my code looks now as follows:
---
Process MS = new Process();
int tmpErrIntCode = 0;
string tmpErrCatched = "";
try
{
  //Process MS = new Process();
  MS = Process.Start("NET", "USE \\\\" + tmpMyComputer + " /user:" + tmpMyUserID + " " + tmpMyPassword);
  //now you can lookup something that will be of use when looking at the autocomplete
  //MS.
  //you can read its error output or the exit state
  tmpErrIntCode = MS.ExitCode; // <= result = 2 ; where to find exit state?
}
catch (Exception ex)
{
    //do something here
    tmpErrCatched = ex.ToString();  // is not entered
}
finally
{
   //
}
---
Executing the equivalent Net-Use-command leads to error 1385.
I'ld expect this error..

sorry there is no exit state, i've looked at the thread properties a few weeks ago trying to get better grip on process running through process.start but wasn't able to find a good handle on it [using a third party interface with sendkeys]

you can look at the thread like
using System.Threading;

                Thread myThread = MS.Threads(0);
                myThread. --> use intellisense here

you can even check the threadstate but it will not give you a reason for exit or wait

                myThread.ThreadState = System.Threading.ThreadState.Aborted;

but i can't seem to find something like the exit  reason

So, I can forget this?

Is there a way to use lastdllerror ...

not sure but looking at the ExitCode

http://msdn2.microsoft.com/en-us/library/system.diagnostics.process.exitcode.aspx

there is something interesting about enable raising events on the process so this way you can wait for the process to exit and check the exitcode, they that in a do loop in the msdn sample it could give you something to have a hold on the process exit state

Thanks, but it seems that there is no exit state either...
and the exit code is still 2.

exit code 0 is most of the time a normal exit do you have no list of exitcodes for net use

btw if i read this correctly there are no errorcodes for net.exe

http://groups.google.com/group/alt.msdos.batch/browse_frm/thread/61a346ad5331c064/f689bc2efcb2d1c6

Thanks,
my new idea is to read the output of net.exe.

if it will write to the standard out put you can indeed read it through the MS class

If it is used as a console call the output gets displayed in the console window.

Since this is event controlled(?) there are new thoughts required...
I expect a huge effort because I've never done this before..

For the time-being I use now the following working code
---
try
{
MS.StartInfo.UseShellExecute=false;
MS.StartInfo.RedirectStandardOutput=true;
MS.StartInfo.RedirectStandardError=true;
MS.StartInfo.CreateNoWindow=true;
MS.StartInfo.FileName  = "NET";
MS.StartInfo.Arguments = "USE \\\\" + tmpMyComputer + " /user:" + tmpMyUserID + " " + tmpMyPassword;
MS.StartInfo.WorkingDirectory=WorkingDirectory;
MS.Start();
//
errorNet  = "";
do
  {
    if (!MS.HasExited)
       {
          MS.Refresh();
        }
  }
while (!MS.WaitForExit(1000));
//
errorNet = MS.StandardError.ReadToEnd();
}
catch (Exception ex)
{
  //
}
finally
{
  //
  if (MS != null)
  {
    MS.Close();
  }
  //
  if (errorNet != "")
  {
    // message box
  }
}
---
This code cannot be the final solution,
I think the only way is to create a private class for the net use command.

Your help was welcome and helpful..