调用Windows Shell并传递一些参数.NET c＃

Question

Here my problem, I want to use gpg.exe to decrypt some data. Before this, I want to test and make an "ipconfig" through the Windows Shell. I've tried :

Process.Start("cmd","ipconfig");

without success. Did someone know a way to help me please?

Thanks.

Answer 1

Take a look at this function (taken from here )

   public static string ExecuteCmd(string arguments)
    {
        // Create the Process Info object with the overloaded constructor
        // This takes in two parameters, the program to start and the
        // command line arguments.
        // The arguments parm is prefixed with "@" to eliminate the need
        // to escape special characters (i.e. backslashes) in the
        // arguments string and has "/C" prior to the command to tell
        // the process to execute the command quickly without feedback.
        ProcessStartInfo _info =
            new ProcessStartInfo("cmd", @"/C " + arguments);

        // The following commands are needed to redirect the
        // standard output.  This means that it will be redirected
        // to the Process.StandardOutput StreamReader.
        _info.RedirectStandardOutput = true;

        // Set UseShellExecute to false.  This tells the process to run
        // as a child of the invoking program, instead of on its own.
        // This allows us to intercept and redirect the standard output.
        _info.UseShellExecute = false;

        // Set CreateNoWindow to true, to supress the creation of
        // a new window
        _info.CreateNoWindow = true;

        // Create a process, assign its ProcessStartInfo and start it
        Process _p = new Process();
        _p.StartInfo = _info;
        _p.Start();

        // Capture the results in a string
        string _processResults = _p.StandardOutput.ReadToEnd();

        // Close the process to release system resources
        _p.Close();

        // Return the output stream to the caller
        return _processResults;
    }

Answer 2

Note that in the statement

ProcessStartInfo("cmd", @"/C " + arguments);

Contrary to the comment in the code, the @ sign only affects the string "/C " and does not the affect the contents of the string arguments . In this case it doesn't hurt anything, but doesn't do anything either.

Contrary to the comment in the code, any \\ s in arguments would indeed need to be escaped.

Answer 3

• The first parameter is the file executed, "cmd" is a shortcut for "C:\\Windows\\System32\\cmd" .
• The second parameter are the arguments to give to the program. Here, you can't just write "ipconfig" . You have to use /r or /c or /k to give the arguments to cmd :

  /c or /r : Carries out the command specified by string and then stops.
  /k : Carries out the command specified by string and continues.

Process.Start("cmd", "/r ipconfig");