why WaitForExit() doesn't wait?

Question

i am adding Custom Action into my VS2008 setup project (MSI installer).

I am calling a batch file to create database and want to delete those files after. I have WaitForExit() but it will not wait. Why?

            ProcessStartInfo startInfo = new ProcessStartInfo();
            startInfo.UseShellExecute = false;
            string tempDir = @"C:\Temp\";
            startInfo.FileName = tempDir + "sybaseDB\\en_AllInOne_installDB.bat";
            startInfo.Arguments = tempDir + "sybaseDB\\";

            try
            {
                Process startDB = Process.Start(startInfo);
                startDB.WaitForExit();

            }
            catch (Exception e)
            {
                //do something?
            }
            finally {
                System.IO.File.Delete(tempDir);
            }

no difference with startInfo.UseShellExecute = true; The batch was executed without any problem because it require user input and I input y and n for questions. but that delete action happened before my input. And I have a pause at the end of the batch file. I can watch the process of the batch file going.

EDIT: I tested more than 10 times, it didn't work. After lunch, I put one more waitForExit and a while loop with HasExited check. it will sleep inside the while loop. I found it worked. Then I deleted those extra code, back to one WaitForExit. It seems work now.

Answer 1

This is probably throwing an exception because you can't execute a .bat file. You probably intend to execute cmd.exe by giving the .bat file as a command line argument.