Using New Process() in C#, how can I copy the command line text to a text file?

Question

I want to run lmutil.exe with the arguments -a, -c, and 3400@takd, then put everything that command line prompt generates into a text file. What I have below isn't working.

If I step through the process, I get errors like "threw an exception of type System.InvalidOperationException"

        Process p = new Process();
        p.StartInfo.FileName = @"C:\FlexLM\lmutil.exe";
        p.StartInfo.Arguments = "lmstat -a -c 3400@tkad>Report.txt";
        p.Start();
        p.WaitForExit();

All I want is for the command line output to be written to Report.txt

Filename = "cmd.exe", Arguments = "/c c:\flex..yadayada > Report.txt" — Hans Passant, Jan 04 '12 at 18:35
a space doesn't help, and the > is to denote that it is supposed to copy the output into the text file — Brandon, Jan 04 '12 at 18:36

Cameron S · Accepted Answer · 2012-01-04T18:39:13.800

2

To get the Process output you can use the StandardOutput property documented here.

Then you can write it to a file:

Process p = new Process();
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.UseShellExecute = false;
p.StartInfo.FileName = @"C:\FlexLM\lmutil.exe";
p.StartInfo.Arguments = "lmstat -a -c 3400@tkad";
p.Start();
System.IO.File.WriteAllText("Report.txt", p.StandardOutput.ReadToEnd());
p.WaitForExit();
p.Close();

edited Jan 04 '12 at 18:39

answered Jan 04 '12 at 18:23

Cameron S

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Okay, but then remove `>Report.txt' from the arguments. – Hans Passant Jan 04 '12 at 18:33
This is working. I had thought it would put it in the directory of lmutil.exe. Instead its in the bin folder of the c# program I'm running. Thank you – Brandon Jan 04 '12 at 18:47

score 1 · Answer 2 · answered Jan 04 '12 at 18:24

1

You can't use > to redirect via Process, you have to use StandardOutput. Also note that for it to work StartInfo.RedirectStandardOutput has to be set to true.

answered Jan 04 '12 at 18:24

Guvante

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Using New Process() in C#, how can I copy the command line text to a text file?

2 Answers2