Running C++ program from c#, filesystem errors

[venkat arun]

Hello,
I have made a program in C++ for which I am making the GUI in C#. I want to run the C++ program as a process from C#. The program loads and runs fine, but due to some reason it is not able to access the files. When I run it externally using the same parameters, it works perfectly. Here is the c# code (the name of c++ program is TV.exe):

System.Diagnostics.Process proc = new System.Diagnostics.Process();
            proc.StartInfo.FileName = CurrentDirectory + "TV.exe";
            proc.StartInfo.Arguments = Convert.ToString(dataMain.Columns.Count - 3) + " " + Convert.ToString(dataMain.Rows.Count-1) + " 50 100";//command line arguments
            proc.StartInfo.RedirectStandardOutput = true;
            proc.StartInfo.UseShellExecute = false;
            proc.StartInfo.CreateNoWindow = false;
            proc.Start();
            using (proc)
            {
                using (StreamReader reader = proc.StandardOutput)
                {
                    string result = reader.ReadToEnd(); // Read in all the text from the process with the StreamReader.
                    rtbMessages.Text = result;
                }
            }

PS: I tried redirecting the output as well as not redirecting it, but the error reporter in my C++ program says that it is not able to access the file (I checked this using the good() function).

[DdoubleD]

Are you getting a deadlock condition? Try adding proc.WaitForExit() following your call to reader.ReadToEnd() .

More information at:
http://msdn.microsoft.com/en-us/library/system.diagnostics.processstartinfo.redirectstandardoutput.aspx

[venkat arun]

I got the problem. The C# program was initiating the C++ program as if it were started from c:\. And since it couldn't find the required file there it was giving an error. But my question is this:

Is there any way to simulate to the [c++] program that it is being run from a specific directory? I know that windows shell passes the address of the program in the first argument, but is there any way I can set this argument?

[DdoubleD]

You may wish to consider modifying your C++ program to find the file relative to where its exe/process is running, or setting the full pathname of the exe in your process call (exact issue is unclear to me), but look at changing the current working directory as a possible fix for your dilemma: http://msdn.microsoft.com/en-us/library/system.environment.currentdirectory.aspx

[venkat arun]

I tried both, it did not work. So I decided to take the longer way out, by passing the directory as another argument, and then concatenating whatever file name I wanted in the c++ program.

Thank you