Question

System.Diagnostics.Process proc = new System.Diagnostics.Process();
proc.StartInfo.RedirectStandardOutput = true;
proc.StartInfo.UseShellExecute = false;
proc.StartInfo.FileName="id";
proc.StartInfo.Arguments="-un";
proc.Start();
string nome_user = proc.StandardOutput.ReadLine();
proc.WaitForExit();

Hi, I was trying to run a shell command using Mono GTK#. When the debugger is on the proc.Start(); line, proc.StandardOutput.ReadLine() added to watch shows the output correctly, but when the debugger jumps to the next line (string nome_user = proc.StandardOutput.ReadLine();), with no reason the value of the proc.StandardOutput.ReadLine() turns into null. Can you help me?

Answer 1

Well, if you read it in the debugger, it’s already been consumed from the stream. The stream won’t magically rewind so it can be read again.