Passing multiple Arguments to C++ .Exe file through C#

[Hussain_3]

i have exe file generated by the Compilation of C++ program now I want to pass arguments to the generated exe file through C# and save all of the output of exe file on a .txt file this is What i have done so far

public static string RunCmd(params int[] commands)
{
    string returnvalue = string.Empty;

    ProcessStartInfo info = new ProcessStartInfo("C:\\...\\.exe");
    info.UseShellExecute = false;
    info.RedirectStandardInput = true;
    info.RedirectStandardOutput = true;
    info.CreateNoWindow = true;

    using (Process process = Process.Start(info))
    {
        StreamWriter sw = process.StandardInput;
        StreamReader sr = process.StandardOutput;

        //foreach (int command in commands)
        //{
        //    sw.WriteLine(command);
        //}
        for (int i = 0; i < commands.Length; i++)
        {
            sw.WriteLine(commands[i]);
        }

        sw.Close();
        returnvalue = sr.ReadToEnd();
        process.Close();
        System.IO.StreamWriter file = new System.IO.StreamWriter("C:\\..\\.txt");
        file.WriteLine(returnvalue);

        file.Close();



        return returnvalue;

}

it work well for a single argument but whenever i try to enter multiple Arguments,it just opens the .exe file and not work further

[tinstaafl]

Have you tried using the Arguments property of the ProcessStartInfo property of the Process class? It accepts a string of arguments for the process.

[Hussain_3]

yes i have tried it but still got the same issue
this code is working fine for a program that takes only one number as a input in its C++ program but whenever i try it on some other program that takes two numbers as a input .it doesnt work well and just opens that program .exe file

[tinstaafl]

How are you delimiting the arguments? c++ uses whitespace.

Your code would look something like this:

public static string RunCmd(params int[] commands)
{
    string returnvalue = string.Empty;
    ProcessStartInfo info = new ProcessStartInfo("C:\\...\\.exe");
    info.UseShellExecute = false;
    info.RedirectStandardInput = true;
    info.RedirectStandardOutput = true;
    info.CreateNoWindow = true;
    string newarguments = "";
    foreach(int i in commands)
    {
        newarguments += i.ToString() + " ";
    }
    info.Arguments = newarguments.Trim();
    using (Process process = Process.Start(info))
    {
        StreamReader sr = process.StandardOutput;
        returnvalue = sr.ReadToEnd();
        process.Close();
        System.IO.StreamWriter file = new System.IO.StreamWriter("C:\\..\\.txt");
        file.WriteLine(returnvalue);
        file.Close();
        return returnvalue;
}