using System;using System.Collections.Generic;using System.Drawing;using System.Windows.Forms;using System.IO;namespace test{	/// <summary>	/// Description of MainForm.	/// </summary>	public partial class MainForm : Form	{		public MainForm()		{			//			// The InitializeComponent() call is required for Windows Forms designer support.			//			InitializeComponent();						//			// TODO: Add constructor code after the InitializeComponent() call.			//		}				void Button1Click(object sender, EventArgs e)		{			richTextBox1.Focus();			richTextBox1.Select(0, richTextBox1.Rtf.Length);		}				void Button2Click(object sender, EventArgs e)		{			Clipboard.SetData(DataFormats.Rtf, richTextBox1.SelectedRtf);//		}				void Button4Click(object sender, EventArgs e)		{			Clipboard.SetData(DataFormats.Rtf, richTextBox1.SelectedRtf);//复制RTF数据到剪贴板            richTextBox1.SelectedRtf="";//再把当前选取的RTF内容清除掉,当前就实现剪切功能了.		}				void Button3Click(object sender, EventArgs e)		{			richTextBox1.Focus();			richTextBox1.Paste();//		}				void Button5Click(object sender, EventArgs e)		{			FileStream fs=new FileStream("F:\\ppp.rtf",FileMode.Create ,FileAccess.Write);			richTextBox1.SaveFile(fs,RichTextBoxStreamType.RichText);			fs.Close();		}	}}