C#编程实现查看剪切板内容的方法

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;namespace WindowsFormsApplication49{  public partial class Form1 : Form  {    public Form1()    {      InitializeComponent();    }    private void Form1_Load(object sender, EventArgs e)    {      radioButton1.Checked = true;      pictureBox1.Visible = false;      textBox1.Visible = true;    }    //“查看”按钮    private void button1_Click(object sender, EventArgs e)    {      IDataObject data;//为传送数据提供与格式无关的接口      string format = FormatString();      if (format == "Bitmap")      {        textBox1.Visible = false;        pictureBox1.Visible = true;        data = Clipboard.GetDataObject();//检索位于当前系统剪切板的数据        if (data.GetDataPresent(format))//确定此实例中存储的数据是否与指定的格式关联，返回布尔        {          pictureBox1.Image = (Bitmap)data.GetData(format);//检索与指定的格式关联的数据          pictureBox1.SizeMode = PictureBoxSizeMode.StretchImage;        }        else        {          MessageBox.Show("格式不正确", "提示");        }      }      else      {        textBox1.Visible = true;        pictureBox1.Visible = false;        data = Clipboard.GetDataObject();        if (data.GetDataPresent(format))        {          textBox1.Text = (string)data.GetData(format);        }        else        {          MessageBox.Show("格式不正确", "提示");        }      }    }    private string FormatString()    {      string format = "";      if (radioButton1.Checked) format = DataFormats.Text;//得到IDATAOBJECT里面数据的格式      if (radioButton2.Checked) format = DataFormats.Rtf;      if (radioButton3.Checked) format = DataFormats.Bitmap;      if (radioButton4.Checked) format = DataFormats.Html;      return format;    }  }}