How do I parse live cmd output and display in a textbox

Question

How to I parse live cmd output and display in a textbox. Example

wkhtmltopdf http://www.google.com output.pdf

gives the below in cmd

Loading pages (1/6)
[>                                                           ] 0%
[======>                                                     ] 10%
[=============>                                              ] 23%
[==================>                                         ] 30%
[==============================>                             ] 51%
[=================================>                          ] 56%
[==================================>                         ] 58%
[========================================>                   ] 68%
[===============================================>            ] 79%
[================================================>           ] 81%
[==================================================>         ] 84%
[============================================================] 100%
Counting pages (2/6)                                               
[============================================================] Object 1 of 1
Resolving links (4/6)                                                       
[============================================================] Object 1 of 1
Loading headers and footers (5/6)                                           
Printing pages (6/6)
[>                                                           ] Preparing
[============================================================] Page 1 of 1
Done

I want to parse the above and display in the step ( loading , counting ....) in one textbox and the progress in % ,using numbers in () , in another textbox and number of pages in another.

I tried to modify the answer from this How to parse command line output from c#? for my needs but it couldn't succeed. Then I read somewhere I need to use BackgroundWorker and tried to modify and use code from http://www.codeproject.com/Articles/99143/BackgroundWorker-Class-Sample-for-Beginners but failed.

"Modified" in which way? "Couldn't succeed" with what problem? "Failed" with what error message? — Thomas Weller, Nov 04 '15 at 12:33
This might help - [Capturing console output from a .NET application (C#)](http://stackoverflow.com/questions/186822/capturing-console-output-from-a-net-application-c) — Jason Evans, Nov 04 '15 at 12:39

online Thomas · Answer 1 · 2015-11-04T16:28:55.057

You can use pProcess.StandardOutput.ReadToEnd(); like this:

public void GetMacAddress(string ipAddress)
{
    string macAddress = string.Empty;
    System.Diagnostics.Process pProcess = new System.Diagnostics.Process();
    pProcess.StartInfo.FileName = "arp";
    pProcess.StartInfo.Arguments = "-a " + ipAddress;
    pProcess.StartInfo.UseShellExecute = false;
    pProcess.StartInfo.RedirectStandardOutput = true;
    pProcess.StartInfo.CreateNoWindow = true;
    pProcess.Start();
    string strOutput = pProcess.StandardOutput.ReadToEnd();
    Textbox.text = strOutput;
}

Update: Class system.io.streamreader has also a method ReadLine(), you should try it out as pProcess.StandardOutput is of this type

https://msdn.microsoft.com/en-us/library/system.io.streamreader(v=vs.110).aspx

This waits till the end. I want to display as it happens. – user183729 Nov 04 '15 at 12:59 — user183729, Nov 04 '15 at 12:59

How do I parse live cmd output and display in a textbox

1 Answers1