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c#wpf.net-corewinapiwin32exception

Process MainModule - can I avoid Win32 exception?

I am enumerating processes to find if excel.exe is running (for example). I get a lot of Win32Exception from system services and such.

Process[] pps = Process.GetProcesses();
foreach (var process in pps)
{
    string module = null;
    try
    {
        module = process.MainModule?.FileName;
    }
    catch (Win32Exception)
    {
        continue;
    }

which make enumeration to run 500ms instead of 10ms.

Is there a way to figure if a process has main module without triggering the exception? Or any other way to find process exe path?

Solution

  • This exception occurs when you're trying to do something which your OS doesn't allow. You can check the NativeErrorCode property to see more details about the exception.

    You can find a solution here to deal with that issue.

    As mentioned by @steeeve in comment, you can use GetProcessByName, if performance is the only criteria for you.