Application hangs when using ProcessStartInfo and Process.WaitForExit.

Question

I've looked on different threads about this, but all of them uses the Process.RedirectStandardOutput = True, which I don't.
I'm trying to open a process (console application, not made by me) to make it compile a special .acs file to a .o file. The structure is simple, the only argument is the file you want to compile.
But on certain files my application hangs when trying to open the process. Here's my code:
Dim p As New Process
Dim ps As New ProcessStartInfo
ps.Arguments = SavePath 'Path example: "C:\Program Files (x86)\Zandronum\File.acs"
ps.FileName = Path.Combine(System.AppDomain.CurrentDomain.BaseDirectory(), "Script Compilers\Zandronum\acc.exe")
ps.CreateNoWindow = False
ps.ErrorDialog = False
ps.UseShellExecute = True
ps.WindowStyle = ProcessWindowStyle.Hidden
ps.WorkingDirectory = Path.GetDirectoryName(SavePath)
Dim ErrorCaptured As Boolean = False
Try
p = Process.Start(ps)
Catch ex As Exception
ErrorCaptured = True
End Try
If ErrorCaptured = False Then
p.WaitForExit()
End If
If ErrorCaptured = True Then
Exit Sub
End If
Thanks!
//Visual Vincent
EDIT:
For starting the process I use pretty much the same code that another guy made in C#. And his code is working perfectly...
// Setup process info
processinfo = new ProcessStartInfo();
processinfo.Arguments = args;
processinfo.FileName = Path.Combine(this.tempdir.FullName, info.ProgramFile);
processinfo.CreateNoWindow = false;
processinfo.ErrorDialog = false;
processinfo.UseShellExecute = true;
processinfo.WindowStyle = ProcessWindowStyle.Hidden;
processinfo.WorkingDirectory = this.workingdir;
try
process = Process.Start(processinfo);
catch(Exception e)
// Unable to start the compiler
General.ShowErrorMessage("Unable to start the compiler (" + info.Name + "). " + e.GetType().Name + ": " + e.Message, MessageBoxButtons.OK);
return false;
// Wait for compiler to complete
process.WaitForExit();
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Please mark as answer if I solved your problem. :)

Answer 1

Hi,
 Have you compared the FileNames and Arguments of ones that work and ones that don`t? Is there any difference in them such as the ones that work do not contain blank spaces in the FileName or arguments and the ones that do work don`t contain blank spaces
in them? If you find that to be the problem then you need to add Quotes to the beginning and end of the FileName or Arguments.
 My first guess is the Arguments needs the Quotes like this because, i see blank spaces in your example of the Arguments.
ps.Arguments = Chr(34) & SavePath & Chr(34)
If you say it can`t be done then i`ll try it
This actually made it. I had forgotten that blank spaces makes it a new argument, silly me. I don't use process arguments that often. ;)
Thanks alot!
I hope your day has been better than yesterday, but that it's worse than tomorrow...
Please mark as answer if I solved your problem. :)