Why command doesn't executes if contains Russian letters?

Question

I tried to disconnect/connect my modem adapter, named as "конект", but it doesn't work, because adapter's name contains Russian letters. How to force it to work? Please help.

Connect("конект", "", "", true);

    public static void Connect(string adapter, string login, string pass, bool discon)
    {
        string cmd = "";
        if (discon)
        {
            cmd = "rasdial " + '"' + adapter + '"' + @" /disconnect";
        }
        else
        {
            cmd = "rasdial " + '"' + adapter + '"' + " " + login + " " + pass;
        }
        Cmd(cmd);
    }
    public static void Cmd(string URL)
    {
        ProcessStartInfo startInfo = new ProcessStartInfo("CMD.exe");
        Process p = new Process();
        startInfo.RedirectStandardInput = true;
        startInfo.UseShellExecute = false;
        startInfo.RedirectStandardOutput = true;
        startInfo.RedirectStandardError = true;
        startInfo.CreateNoWindow = true;
        p = Process.Start(startInfo);
        p.StandardInput.WriteLine(URL);
        p.StandardInput.WriteLine(@"EXIT");
        p.WaitForExit();
        p.Close();
    }

[I know that need just rename adapter with English letters and code will work, but I want to know how to force it work with Russian letters]

What does "does not work" mean? Do you get an exception, or does it just mean it will not disconnect? — Justin Pihony, Apr 15 '13 at 17:18
Is 'adapter' the host name? Can you look it up using .NET and pass its IP address instead? To see output, I guess you'd have to read stderr and stdout. — CodeCaster, Apr 15 '13 at 17:23
It has to be an encoding issue, but where along the line is the encoding switching from Unicode to ASCII? It looks like you're just running a shell with your assembled string. Does this work from the command line, or is the problem outside the C# code? — Denise Skidmore, Apr 15 '13 at 17:25
It works when I enter command manually in cmd.exe, but doesn't when via C#. I tried without hiding cmd.exe's window, but nothing seen there. — Halabella, Apr 15 '13 at 17:38
Have you tried to use: Encoding.UTF8.GetString(Encoding.ASCII.GetBytes(adapter)) — Justin Pihony, Apr 15 '13 at 17:22

score 1 · Accepted Answer · answered Apr 15 '13 at 18:43

    p.StandardInput.WriteLine(URL);

ProcessStartInfo is missing a StandardInputEncoding property. That makes it likely that a "URL" string that contains Cyrillic characters is going to get mangled if this code runs on machine that doesn't have a cyrillic code page as the default system code page.

You really want to avoid using input redirection here, it just isn't necessary. Use the /c command option for cmd.exe so that you can pass the command line directly:

startInfo.Arguments = "/c " + URL;
p = Process.Start(startInfo);

Fwiw, not necessary to use cmd.exe either, just run rasdial.exe directly.

The last line is probably the most important. – J... Apr 15 '13 at 20:32 — J..., Apr 15 '13 at 20:32

Why command doesn't executes if contains Russian letters?

1 Answers1