Programs Knowledge

{
    int result = -1; //-1 = not found, -2 = error
    System.Diagnostics.Process[] localByName = 
        System.Diagnostics.Process.GetProcessesByName(processName);

    int i = localByName.Length;
    System.Diagnostics.Process chosen;

    try
    {
        while (i > 0)
        {
            chosen = System.Diagnostics.Process.GetProcessById(localByName[i - 1].Id);

            if (chosen.ProcessName == processName && 
                chosen.MainWindowTitle.Contains(mainWindowsTitle))
            {
                result = localByName[i - 1].Id;
            }

            i -= 1;
        }
    }
    catch (Exception ex)
    {
        result = -2;
    }

    return result;
}

public string KillProcess(int processID)
{
    string result = "success";
    System.Diagnostics.Process chosen;

    try
    {
        chosen = System.Diagnostics.Process.GetProcessById(processID);
        chosen.Kill();
        chosen.WaitForExit();
    }
    catch (Exception ex)
    {
        result = "fail, " + ex.Message;
    }

    return result;
}