How do i execute a process in C# that installs a printer driver?

I have to start an executable (installPrint.exe) within my C# code. For this purposes I used the System.Diagnostics.Process class. The exe file installs a printer driver and copy several files into different directories. I can execute the exe from command line and everything work fine. But if i execute the file with the Process class from my C# application, the printer driver will not be installed.

I start my C# application as a admin user on a Windows XP SP2 x86 machine. Why do my executable dont work in the context of my C# application? What possibilities do i have to get it work?

 ProcessStartInfo startInfo = new ProcessStartInfo();
        startInfo.Arguments = "-i \"My Printer\" -dir . -port myPort -spooler";
        startInfo.CreateNoWindow = true;
        startInfo.FileName = @"C:\Printer\install.exe";
        startInfo.RedirectStandardOutput = true;
        startInfo.RedirectStandardError = true;
        startInfo.UseShellExecute = false;
        //startInfo.Verb = "runas";
 开发者_如何学Go       startInfo.WindowStyle = ProcessWindowStyle.Hidden;
        startInfo.WorkingDirectory = @"C:\Printer\";
        session.Log("Working Directory: " + startInfo.WorkingDirectory);

        session.Log("Executing " + startInfo.FileName);
        try
        {
            Process process = new Process();
            //process.EnableRaisingEvents = false;
            process.StartInfo = startInfo;
            process.Start();

            session.Log("installer.exe started");
            StreamReader outReader = process.StandardOutput;
            StreamReader errReader = process.StandardError;
            process.WaitForExit();

            //session.Log(outReader.ReadToEnd());

            //session.Log(errReader.ReadToEnd());

            session.Log("RETURN CODE: " + process.ExitCode);

        }
        catch (Exception ex)
        {
            session.Log("An error occurred during printer installation.");
            session.Log(ex.ToString());
        }

I take it, you are running your program on Windows Vista or 7. Then, you have to request elevation for your newly created process to run with full access rights. Look at those questions for details: Request Windows Vista UAC elevation if path is protected? Windows 7 and Vista UAC - Programmatically requesting elevation in C#

Ok, I see now, that you're using Win XP. Then it may be because of some settings of Process when you start it. Try to start you process as ShellExecute, this way it will be most close to normal starting by the user. Here's a sample:

var p = new System.Diagnostics.Process();
p.StartInfo = new System.Diagnostics.ProcessStartInfo { FileName = "yourfile.exe", UseShellExecute = true };
p.Start();

I use this class in many parts of my projects:

public class ExecutableLauncher
{
    private string _pathExe;

    public ExecutableLauncher(string pathExe)
    {
        _pathExe = pathExe;
    }
    public bool StartProcessAndWaitEnd(string argoment, bool useShellExecute)
    {
        try
        {
            Process currentProcess = new Process();

            currentProcess.EnableRaisingEvents = false;

            currentProcess.StartInfo.UseShellExecute = useShellExecute;

            currentProcess.StartInfo.FileName = _pathExe;

            // Es.: currentProcess.StartInfo.Arguments="http://www.microsoft.com";
            currentProcess.StartInfo.Arguments = argoment;

            currentProcess.Start();
            currentProcess.WaitForExit();
            currentProcess.Close();

            return true;
        }
        catch (Exception currentException)
        {
            throw currentException;
        }
    }
}

I hope to have answered at your question.

M.