如何等待一个进程结束？？？

Question

 System.Diagnostics.Process p = new System.Diagnostics.Process();
            p.StartInfo.FileName = "mspaint";
            p.Start();
            p.WaitForExit();
            MessageBox.Show("");

Answer 1

namespace FileSystemWatcherExample
{
    public partial class Form1 : Form
    {
        
        public Form1()
        {
             InitializeComponent();
        }        private void button1_Click(object sender, EventArgs e)
        {
                       // Create a new FileSystemWatcher and set its properties. 
            FileSystemWatcher watcher = new FileSystemWatcher();
            watcher.Path = "E:\\Project\\C#组件熟悉\\窗体控件\\FileSystemWatcherExample";
           
            /* Watch for changes in LastAccess and LastWrite times, and 
                       the renaming of files or directories. */            watcher.NotifyFilter = NotifyFilters.LastAccess | NotifyFilters.LastWrite
          | NotifyFilters.FileName | NotifyFilters.DirectoryName;
            // Only watch text files. 
            watcher.Filter = "test.txt";            // Add event handlers. 
            watcher.Changed += new FileSystemEventHandler(OnChanged);
            watcher.Created += new FileSystemEventHandler(OnChanged);
            watcher.Deleted += new FileSystemEventHandler(OnChanged);
            watcher.Renamed += new RenamedEventHandler(OnRenamed);
            // Begin watching. 
            watcher.EnableRaisingEvents = true;
            // Wait for the user to quit the program.        }
        // Define the event handlers.
        private static void OnChanged(object source, FileSystemEventArgs e)
        {
            // Specify what is done when a file is changed, created, or deleted.
            MessageBox.Show("File: " + e.FullPath + " " + e.ChangeType);
        }        private static void OnRenamed(object source, RenamedEventArgs e)
        {
            // Specify what is done when a file is renamed.
       
            MessageBox.Show("File:" + e.OldFullPath + "renamed to" + e.FullPath);
        }    }
}