How to parse command line output from c#?

Question

I want to execute an application(command line application) from the C#... and I want after executing this application and providing the input to it, I want to parse the output that will result it. Since, it will output many things, and I want to take, just the things that I need it from it...

How can I do that ??

How can I get the output in the c# and then take only the things I need it from it ??

For executing the command line in C#... I'm thinking to use "Jeff MC" way, that he explained it in this thread How To: Execute command line in C#, get STD OUT results

Thanks alot

Answer 1

There is one more way of getting all the output as events as and when they are output by the other console application cmd_DataReceived gets raised whenever there is output and cmd_Error gets raised whenever there is an error raised in the other application.

If you want to parse the output, probably handling these events is a better way to read output and handle errors in the other application as and when they occur.

using System; using System.Diagnostics;  namespace InteractWithConsoleApp {     class Program     {         static void Main(string[] args)         {             ProcessStartInfo cmdStartInfo = new ProcessStartInfo();             cmdStartInfo.FileName = @"C:\Windows\System32\cmd.exe";             cmdStartInfo.RedirectStandardOutput = true;             cmdStartInfo.RedirectStandardError = true;             cmdStartInfo.RedirectStandardInput = true;             cmdStartInfo.UseShellExecute = false;             cmdStartInfo.CreateNoWindow = true;              Process cmdProcess = new Process();             cmdProcess.StartInfo = cmdStartInfo;             cmdProcess.ErrorDataReceived += cmd_Error;             cmdProcess.OutputDataReceived += cmd_DataReceived;             cmdProcess.EnableRaisingEvents = true;             cmdProcess.Start();             cmdProcess.BeginOutputReadLine();             cmdProcess.BeginErrorReadLine();              cmdProcess.StandardInput.WriteLine("ping www.bing.com");     //Execute ping bing.com             cmdProcess.StandardInput.WriteLine("exit");                  //Execute exit.              cmdProcess.WaitForExit();         }          static void cmd_DataReceived(object sender, DataReceivedEventArgs e)         {             Console.WriteLine("Output from other process");             Console.WriteLine(e.Data);         }          static void cmd_Error(object sender, DataReceivedEventArgs e)         {             Console.WriteLine("Error from other process");             Console.WriteLine(e.Data);         }     } }