process status display

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hi,

i am trying to develop form based appl. in that i have homeform by clicking on one menu item it will open another window . in that window the last step is compilation of cpp files and paralelly display status of compilation to user on homeform by closing the current window.

i am collecting set of cpp sourcefiles to a list and using following code multiple times(based on number of files)for compile.

public void ExecuteCommandSync(string command)
        {
           // create the ProcessStartInfo using "cmd" as the program to be run, and "/c " as the parameters.
                // Incidentally, /c tells cmd that we want it to execute the command that follows, and then exit.
                System.Diagnostics.ProcessStartInfo procStartInfo = new
                 System.Diagnostics.ProcessStartInfo("cmd", "/c" + command);
                // The following commands are needed to redirect the standard output. 
                procStartInfo.RedirectStandardOutput = true;
                procStartInfo.RedirectStandardError = true;
                procStartInfo.UseShellExecute = false;
               // Now we create a process, assign its ProcessStartInfo and start it
                System.Diagnostics.Process proc = new System.Diagnostics.Process();
                proc.StartInfo = procStartInfo;
                proc.Start();
                // Get the output into a string
                string result = proc.StandardOutput.ReadToEnd();
                string error = proc.StandardError.ReadToEnd();
                                                            
            }

we are trying to write "error" and "result" strings in above code to a list<string> and trying to display on homeform . but when we close current window that list<string> is not redirecting to homepage.and i am unable to achive parallelism (compiling and status display to homepage).

above function will be called for multiple times (based on number of cpp files selected for compilation).

Posted 10-Jan-12 23:45pm

pasupulety

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Sergey Alexandrovich Kryukov 11-Jan-12 23:58pm

Please don't re-post. You could have answered your follow-up questions on the page of your previous question.
--SA

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Sergey Alexandrovich Kryukov · Answer 1 · 2012-01-11T18:08:00

Not only this is essentially a re-post (please see my comment to the question), but you apparently ignored my past answer redirection of processstatus[^].

Did I explain that you don't need to run "cmd" with "/c"? You don't need it. Even in my previous answer shown above I had to repeat same things more than once. Not you are using two redirected streams, which is good.

Now, what is "is not redirecting to homepage"? what's "homepage"? This term looks completely irrelevant.

You don't need to check the project status. However, you can. All you need is here: http://msdn.microsoft.com/en-us/library/system.diagnostics.process.aspx[^].
What you really need is synchronization with the process you've spawned. You need to make a blocking call which would put your thread to sleep until the child process terminates. For this purpose, call System.Diagnostics.Process.WaitForExit(). That's it.

And, of course, always execute it all in a separate thread. See my previous answer references in first paragraph of this one.

—SA