[Energy++]

allora devi usare la classe Process che si trova nel namespace System.Diagnostics:

Process p = new Process();
p.StartInfo.FileName = "programma.exe";
p.StartInfo.Arguments = "argomenti";
p.StartInfo.UseShellExecute = false;
p.StartInfo.RedirectStandardOutput = true;
p.Start();    

Console.WriteLine(p.StandardOutput.ReadToEnd());

p.WaitForExit();

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