Invoke a batch file

Question

I am trying to execute a batch file with the given code below

private void buttonDisable_Click(object sender, EventArgs e)
        {
            System.Diagnostics.Process si = new System.Diagnostics.Process();
            si.StartInfo.FileName = "Q:\\disable.bat";
            si.Start();          
        }

But it just comes up with this error :

An unhandled exception of type 'System.ComponentModel.Win32Exception' occurred in System.dll

Additional information: The system cannot find the file specified

The file does exist in the location

Q Drive is a local drive not a network drive. And I do have permission to access the directory — , Nov 30 '13 at 21:44
Add a `if (!File.Exists("q:\\disable.bat")) { MessageBox.Show... }` just above your code. — Grynn, Nov 30 '13 at 21:49
Have you checked the permissions for that file? Maybe a security does not let you access this file. — Emmanouil Chountasis, Nov 30 '13 at 21:51
ok thankyou - the file does not exist according to the if statement, but it is there on the drive — , Nov 30 '13 at 21:52
Is that code executing inside of an ASP.NET application? If so, those apps do not have access to driver letters. — kenny, Nov 30 '13 at 22:05

David Heffernan · Answer 1 · 2013-11-30T21:54:26.553

0

The likely explanation for this problem is that the user context that executes the code does not have the Q drive mapped. So, in other words, you can see the file, but the executing code cannot. Perhaps this is running under ASP.net, for instance.

The other plausible explanation is simply that the file does not exist.

edited Nov 30 '13 at 21:54

answered Nov 30 '13 at 21:46

David Heffernan

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Im executing this on my local machine where the q drive in installed on – Nov 30 '13 at 21:48
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It seems that in the context of the executing code that file does not exist. – David Heffernan Nov 30 '13 at 21:50

BRAHIM Kamel · Answer 2 · 2013-11-30T22:04:56.473

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that's normal because .bat is not a process

    System.Diagnostics.Process.Start("cmd.exe", @"/c Q:\disable.bat")

could you please try this link

http://www.codeproject.com/Articles/90143/Mapping-Network-Drive-using-C

if you can force the drive mapping I think you will be able to access the drive

edited Nov 30 '13 at 22:04

answered Nov 30 '13 at 21:50

BRAHIM Kamel

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No. The default value for `UseShellExecute` is `true` and so the shell association for .bat does the rest. And even then, with `UseShellExecute` as `false`, `Start()` manages to run it fine – David Heffernan Nov 30 '13 at 21:51
ok but you agree that 'UseShellExecute' was not set – BRAHIM Kamel Nov 30 '13 at 21:59
It defaults to `true`. But it works either way. Try it out to see. – David Heffernan Nov 30 '13 at 22:00
ok that's true ok what do you thing if he force the mapping of his drive – BRAHIM Kamel Nov 30 '13 at 22:03

Invoke a batch file

2 Answers2