How it is possible to catch the text in the console?

Question

Command line

There is a program that launches the console and executes certain commands in it. It is required that the result of these commands is transferred to the program itself.

Answer 1

Something old was

System.Diagnostics.Process p = new System.Diagnostics.Process();
            p.StartInfo.UseShellExecute = false;
            p.StartInfo.FileName = "cmd.exe";
            p.StartInfo.RedirectStandardError = true;
            p.StartInfo.RedirectStandardInput = true;
            p.StartInfo.RedirectStandardOutput = true;
            p.StartInfo.CreateNoWindow = true;
            //p.StartInfo.StandardOutputEncoding = System.Text.Encoding.UTF8;
            int lcid = GetSystemDefaultLCID();
            var ci = System.Globalization.CultureInfo.GetCultureInfo(lcid);
            var page = ci.TextInfo.OEMCodePage;
            p.StartInfo.StandardOutputEncoding = Encoding.GetEncoding(page);
            p.Start();
            try
            {
                p.BeginOutputReadLine();
                p.BeginErrorReadLine();
                p.StandardInput.AutoFlush = true;
                p.OutputDataReceived += (s, e) => { ... }
                p.ErrorDataReceived += (s, er) =>  { ... }
                while (true)
                { // "\x3" - Ctrl+C
                    if (p.HasExited == true) { break; }
                    p.StandardInput.WriteLine( ... );
                }
            }
            catch (Exception)
            {
                ...
            }