說明：

(1)命名：

RichTextBox ?-> rtxt1

ContextMenuTrip -> cms1

(2)截圖：

(3)完整代碼：

<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();}//載入事件private void Frm_ContentMenuTrip_Load(object sender, EventArgs e) {//載入contextMenuTrip的子項ToolStripItem tsItem;tsItem = AddContextMenu("復制", cms1.Items, new EventHandler(Fuzhi_click));tsItem = AddContextMenu("-", cms1.Items, null);tsItem = AddContextMenu("粘貼", cms1.Items, new EventHandler(Naintie_click));tsItem = AddContextMenu("-", cms1.Items, null);tsItem = AddContextMenu("剪切", cms1.Items, new EventHandler(Jiantie_click));//右鍵顯示的快捷菜單 contextMenuTrip<strong> <span style="color:#ff0000;">rtxt1.ContextMenuStrip = cms1;</span></strong>}/// <summary>/// 加入�子菜單/// </summary>/// <param name="text">要顯示的文字，假設為 - 則顯示為切割線</param>/// <param name="cms">要加入�到的子菜單集合</param>/// <param name="callback">點擊時觸發的事件</param>/// <returns>生成的子菜單，假設為分隔條則返回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;}//復制public void Fuzhi_click(object sender, EventArgs e) { rtxt1.Copy();}//粘貼public void Naintie_click(object sender, EventArgs e) { rtxt1.Paste();}//剪貼public void Jiantie_click(object sender, EventArgs e) { rtxt1.Cut();}} } </span>

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總結

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