calling command line from .NET application

Question

I want to call from a c# application a command line starting from it an application and retrieve the stat from it.

I did this but something is missing:

ProcessStartInfo psf = new ProcessStartInfo("cmd.exe", "/C time");
psf.WindowStyle = ProcessWindowStyle.Hidden;
psf.RedirectStandardOutput = true;
psf.UseShellExecute = false;
psf.CreateNoWindow = true;
Process p = Process.Start(psf);
StreamReader sr = p.StandardOutput;
p.WaitForExit();

What is wrong ?

cmd/c Time expects user input. It won't close unless you provide some input to it. In your case, you are hiding the command window. That makes it look like an input is pending in hidden window. what do you want the code to do? — shahkalpesh
– shahkalpesh, Commented Feb 21, 2010 at 8:56
I don't want to change the time only getting it from this application — Boris Raznikov
– Boris Raznikov, Commented Feb 21, 2010 at 8:57

Lukas Pokorny · Accepted Answer · 2010-02-21 08:58:41Z

2

Try passing "/c time /t" instead of "/c time".

answered Feb 21, 2010 at 8:58

Lukas Pokorny

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6 Comments

Boris Raznikov Over a year ago

Yes i got the data. What did /t did ? How can I get also the miliseconds ?

Lukas Pokorny Over a year ago

As others stated above, without /t, the command asks for input. But I don't think the "time" command supports miliseconds. This has also been stated before, but why not simply use DateTime.Now instead?

Boris Raznikov Over a year ago

I need to check from differences between this option and the DateTime object and another thing. Thanks

Lukas Pokorny Over a year ago

So what about using "echo %time%" instead of "/c time /t"? Can you use that instead?

Lukas Pokorny Over a year ago

Yes, try new ProcessStartInfo("cmd.exe", "/C echo %time%") - this produces output like "10:32:41,18", which is nearly what you need.

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Darin Dimitrov · Accepted Answer · 2010-02-21 09:04:51Z

1

To get the system time I would recommend you using the DateTime structure:

string time = DateTime.Now.ToString("hh:mm:ss.fff");
Console.WriteLine(time);

answered Feb 21, 2010 at 9:04

Darin Dimitrov

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1 Comment

Boris Raznikov Over a year ago

I need to use shell and time and not the datewtime object

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