C# cannot find file specified

Question

Hi I am trying to create a app that uses the msg.exe to send messages over a network.

When i execute msg from cmd everything works fine, but when i open cmd with the form i am unable to, went to the system32 folder with cmd and the file is not shown there, but when i browse or use cmd normally it is and evrything works

tested it on another computer and app works fine, running win 7 64 bit on this 1.

Here is a code sample that i use to open cmd:

Process.Start("cmd");

i am running as admin i have tried executed it directly from msg.exe aswell, it seems to be a problem on 64 bit works on all 32 bit systems but not on any 64bit

edit: ok i found the problem when running 64bit 32 bit applications cannot run 64 bit apps in the system 32 folder. when trying to access this folder it redirects you to %WinDir%\SysWOW64 a work around is to use this path C:\Windows\Sysnative\file (%windir%\Sysnative)

Answer 1

The solution mentioned in the question was what did the trick for me - posting testable solution here for posterity:

public class Messenger : IMessenger
{
    private readonly IProcessWrapper _process;

    public Messenger(IProcessWrapper process)
    {
        _process = process;
    }

    public void SendMessage(string message)
    {
        var info = new ProcessStartInfo
            {
                WorkingDirectory = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Windows), "sysnative"),
                FileName = "msg.exe",
                Arguments = string.Format(@" * ""{0}""", message),
                WindowStyle = ProcessWindowStyle.Hidden,
                UseShellExecute = true,
                Verb = "runas"
            };
        _process.Start(info);
    }
}


public interface IProcessWrapper : IDisposable
{
    IEnumerable<Process> GetProcesses();
    void Start(ProcessStartInfo info);
    void Kill();

    bool HasExited { get; }
    int ExitCode { get; }
}

Answer 2

Do you need to use cmd at all? Why not use Process.Start to call msg.exe directly. If you know where it is, you should be able to run it.