CMD Commands won't run in C#

Question

I'm trying to run the following:

String command = @"Rscript C:\Users\someone\Documents\generate_files.R " + fname + " " + folder;

System.Diagnostics.Process.Start("CMD.exe", "/K PATH C:\\Program Files\\R\\R-3.1.1\\bin;%path%"); 
System.Diagnostics.Process.Start("CMD.exe", "/K " + command);

Nothing happens when I execute it, does anyone know why? If I try

System.Diagnostics.Process.Start("CMD.exe", "/K MD TEST");

That works fine :s

e: Some extra info, The first command is setting the PATH so that the Rscript can be called by just typing Rscript. Also, both of these commands work when I do them in a normal CMD interface.

possible duplicate of [Run Command Prompt Commands](http://stackoverflow.com/questions/1469764/run-command-prompt-commands) — ZoomVirus, Oct 08 '14 at 14:57
@ZoomVirus: I don't totally agree. OP seems to have done that already. — Patrick Hofman, Oct 08 '14 at 14:58
You are starting two different CMD console processes. The first one doesn't share its path with the other one — Steve, Oct 08 '14 at 14:58
That makes sense, is it possible to do one after the other within the same console process? Thanks. — csdacac, Oct 08 '14 at 15:01

score 2 · Accepted Answer · answered Oct 08 '14 at 15:04

Prepare a batch file and execute it

using(StreamWriter sw = new StreamWriter("runscript.cmd", false))
{
   sw.WriteLine(@"PATH C:\Program Files\R\R-3.1.1\bin;%path%"); 
   sw.WriteLine(@"Rscript C:\Users\someone\Documents\generate_files.R " + fname + " " + folder);
}
System.Diagnostics.Process.Start("CMD.exe", "/K runscript.cmd");

This assumes that you have read/write permissions on the current directory. You can change the location to a more suitable position using

string path = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);
string fileCmd = Path.Combine(path, "runscript.cmd");
using(StreamWriter sw = new StreamWriter(fileCmd, false)
....

score 0 · Answer 2 · answered Oct 08 '14 at 15:04

0

As realised by Steve, I was running two console processes. To resolve this I simply ran both commands in the same process.

answered Oct 08 '14 at 15:04

csdacac

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1

You should (probably) accept Steve's answer, not post one of your own. – Wilbert Oct 08 '14 at 15:55

score 0 · Answer 3 · answered Jul 03 '16 at 04:41

0

cmd.Arguments = "/K \"" + fullFilePath;

*try double " " right before PATH

answered Jul 03 '16 at 04:41

aCo

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CMD Commands won't run in C#

3 Answers3