Wait until multiple command line processes complete?

c#, command-line, process, wait

Solution

Since each call to `Process.Start` starts a new process, you can track them all separately, like so:

var processes = new List<Process>();
for (int i = 0; i < commands.Count; i++)
{
    string strCmdText = commands[i];
    processes.Add(System.Diagnostics.Process.Start("CMD.exe", strCmdText));
}

foreach(var process in processes)
{
    process.WaitForExit();
    process.Close();
}

EDIT

`Process.Close()` added as in the comments

Problem

I have a need to execute many command line scripts. They are currently stored in a `List`. I want to run them all at the same time and proceed with the next step only after all of them have completed. I have tried the approach that I show below, but found it lacking because the last command doesn't necessarily end last. In fact, I found that the last command can even be the first to complete. So, I believe that I need something like `WaitForExit()`, but which doesn't return until all executing processes have completed. ``` for (int i = 0; i < commands.Count; i++) { string strCmdText = commands[i]; var process = System.Diagnostics.Process.Start("CMD.exe", strCmdText); if (i == (commands.Count - 1)) { process.WaitForExit(); } } //next course of action once all the above is done ```

Original source