使用RichTextBox控制元件實現系統剪下板功能：

複製：

private void CopytoolStripMenuItem_Click(object sender, EventArgs e) {//複製 try { this.Cursor = Cursors.WaitCursor; string strTemp = richTextBoxSendInfo.SelectedText; //獲取RichTextBox中選中的文字 if (strTemp.Equals("")) //判斷是否為空 return; Clipboard.Clear();//清除原有剪下板中內容 Clipboard.SetText(strTemp);//將文字新增到剪下板中，還新增Object型別資料 this.Cursor = Cursors.Default; } catch (System.Exception ex) { this.Cursor = Cursors.Default; CommonFunc.DisplayException(ex); } }

貼上：

private void PastetoolStripMenuItem_Click(object sender, EventArgs e) {//貼上 try { this.Cursor = Cursors.WaitCursor; this.richTextBoxSendInfo.Paste();//貼上 this.Cursor = Cursors.Default; } catch (System.Exception ex) { this.Cursor = Cursors.Default; CommonFunc.DisplayException(ex); } }

剪下：

private void CuttoolStripMenuItem_Click(object sender, EventArgs e) {//剪下 try { this.Cursor = Cursors.WaitCursor; string strTemp = richTextBoxSendInfo.SelectedText; if (strTemp.Equals("")) return; Clipboard.Clear(); richTextBoxSendInfo.Cut(); this.Cursor = Cursors.Default; } catch (System.Exception ex) { this.Cursor = Cursors.Default; CommonFunc.DisplayException(ex); } }

撤銷：

private void ReDotoolStripMenuItem_Click(object sender, EventArgs e) {//撤銷 try { this.Cursor = Cursors.WaitCursor; richTextBoxSendInfo.Undo(); this.Cursor = Cursors.Default; } catch (System.Exception ex) { this.Cursor = Cursors.Default; CommonFunc.DisplayException(ex); } }