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”按鈕    private void button1_Click(object sender, EventArgs e)    {      IDataObject data;//為傳送數(shù)據(jù)提供與格式無關(guān)的接口      string format = FormatString();      if (format == "Bitmap")      {        textBox1.Visible = false;        pictureBox1.Visible = true;        data = Clipboard.GetDataObject();//檢索位于當(dāng)前系統(tǒng)剪切板的數(shù)據(jù)        if (data.GetDataPresent(format))//確定此實例中存儲的數(shù)據(jù)是否與指定的格式關(guān)聯(lián)，返回布爾        {          pictureBox1.Image = (Bitmap)data.GetData(format);//檢索與指定的格式關(guān)聯(lián)的數(shù)據(jù)          pictureBox1.SizeMode = PictureBoxSizeMode.StretchImage;        }        else        {          MessageBox.Show("格式不正確", "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("格式不正確", "提示");        }      }    }    private string FormatString()    {      string format = "";      if (radioButton1.Checked) format = DataFormats.Text;//得到IDATAOBJECT里面數(shù)據(jù)的格式      if (radioButton2.Checked) format = DataFormats.Rtf;      if (radioButton3.Checked) format = DataFormats.Bitmap;      if (radioButton4.Checked) format = DataFormats.Html;      return format;    }  }}