RichTextBox 右键显示 ContextMenuTrip

说明：

(1)命名：

RichTextBox  -> rtxt1

ContextMenuTrip -> cms1

(2)截图：

(3)完整代码：

<span style="font-size:14px;">using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;namespace Newemployee {public partial class Frm_ContextMenuTrip : Form {public Frm_ContextMenuTrip() {InitializeComponent();}//载入事件private void Frm_ContentMenuTrip_Load(object sender, EventArgs e) {//载入contextMenuTrip的子项ToolStripItem tsItem;tsItem = AddContextMenu("复制", cms1.Items, new EventHandler(Fuzhi_click));tsItem = AddContextMenu("-", cms1.Items, null);tsItem = AddContextMenu("粘贴", cms1.Items, new EventHandler(Naintie_click));tsItem = AddContextMenu("-", cms1.Items, null);tsItem = AddContextMenu("剪切", cms1.Items, new EventHandler(Jiantie_click));//右键显示的快捷菜单 contextMenuTrip<strong> <span style="color:#ff0000;">rtxt1.ContextMenuStrip = cms1;</span></strong>}/// <summary>/// 加入�子菜单/// </summary>/// <param name="text">要显示的文字，假设为 - 则显示为切割线</param>/// <param name="cms">要加入�到的子菜单集合</param>/// <param name="callback">点击时触发的事件</param>/// <returns>生成的子菜单，假设为分隔条则返回null</returns>ToolStripMenuItem <strong><span style="color:#ff0000;">AddContextMenu</span></strong>(string text, ToolStripItemCollection cms, EventHandler callback) {if (text == "-") {ToolStripSeparator tsp = new ToolStripSeparator();cms.Add(tsp);return null;} else if (!string.IsNullOrEmpty(text)) {ToolStripMenuItem tsmi = new ToolStripMenuItem(text);if (callback != null) {tsmi.Click += callback;}cms.Add(tsmi);return tsmi;}return null;}//复制public  void Fuzhi_click(object sender, EventArgs e) {            rtxt1.Copy();}//粘贴public void Naintie_click(object sender, EventArgs e) {           rtxt1.Paste();}//剪贴public void Jiantie_click(object sender, EventArgs e) {          rtxt1.Cut();}}
}
</span>