【IT168 技术文档】

    在.NET中访问剪贴板可以通过两种方法实现：一种方法是直接通过调用某些控件的Cut/Copy/Paste方法就可以直接与剪贴板交互。另一种方法是使用Clipboard类实现。通过调用SetDataObject方法，可以访问剪贴板并将数据存储在其中。该方法使用IDataObject接口将数据存储到剪贴板中。

    1. 使用控件的Cut/Copy/Paste方法与剪贴板交互。

//把数据从文本框剪切到剪贴板 
this.textBox1.Cut();
//把数据从文本框复制到剪贴板 
this.textBox1.Copy(); 

    2. 使用Clipboard类实现访问剪贴板。

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
namespace myClipboard
......{
 /**//**//**//**//**//**//**//// <summary>
 /// Form1 的摘要说明。
 /// </summary> 
public class Form1 : System.Windows.Forms.Form
......{
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.TextBox textBox2;
/**//**//**//**//**//**//**//// <summary>
/// 必需的设计器变量。
/// </summary> 
private System.ComponentModel.Container components = null;
public Form1()
......{
 //
 // Windows 窗体设计器支持所必需的
 // 
 InitializeComponent();
 //
 // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
 // 
 }
 /**//**//**//**//**//**//**//// <summary>
/// 清理所有正在使用的资源。
 /// </summary> 
protected override void Dispose( bool disposing )
......{
 if( disposing )
 ......{
 if (components != null)
 ......{
 components.Dispose();
 }
 }
 base.Dispose( disposing );
 }
 Windows#region Windows 
 /**//**//**//**//**//**//**//// <summary>
 /// 设计器支持所需的方法 - 不要使用代码编辑器修改
 /// 此方法的内容。
 /// </summary> 
 private void InitializeComponent()
 ......{
 this.button1 = new System.Windows.Forms.Button();
 this.button2 = new System.Windows.Forms.Button();
 this.textBox1 = new System.Windows.Forms.TextBox();
 this.textBox2 = new System.Windows.Forms.TextBox();
 this.SuspendLayout();
 //
 // button1
 // 
 this.button1.Location = new System.Drawing.Point(48, 152);
 this.button1.Name = "button1";
 this.button1.TabIndex = 0;
 this.button1.Text = "button1";
 this.button1.Click += new System.EventHandler(this.button1_Click);
 //
 // button2
 // 
 this.button2.Location = new System.Drawing.Point(168, 152);
 this.button2.Name = "button2";
 this.button2.TabIndex = 1;
 this.button2.Text = "button2";
 this.button2.Click += new System.EventHandler(this.button2_Click);
 //
 // textBox1
 // 
 this.textBox1.Location = new System.Drawing.Point(48, 32);
 this.textBox1.Name = "textBox1";
 this.textBox1.Size = new System.Drawing.Size(200, 21);
 this.textBox1.TabIndex = 2;
 this.textBox1.Text = "";
 //
 // textBox2
 // 
 this.textBox2.Location = new System.Drawing.Point(48, 80);
 this.textBox2.Name = "textBox2";
 this.textBox2.Size = new System.Drawing.Size(200, 21);
 this.textBox2.TabIndex = 2;
 this.textBox2.Text = "";
 //
 // Form1
 // 
 this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
 this.ClientSize = new System.Drawing.Size(292, 205);
 this.Controls.Add(this.textBox1);
 this.Controls.Add(this.button2);
 this.Controls.Add(this.button1);
 this.Controls.Add(this.textBox2);
 this.Name = "Form1";
 this.Text = "Form1";
 this.ResumeLayout(false);
 }
 #endregion 
 /**//**//**//**//**//**//**//// <summary>
 /// 应用程序的主入口点。
 /// </summary> 
 [STAThread]
 static void Main()
 ......{
 Application.Run(new Form1());
 }
private void button1_Click(object sender, System.EventArgs e)
......{
 if(textBox1.SelectedText != "")
 Clipboard.SetDataObject(textBox1.SelectedText);
 else
 textBox2.Text = "No text selected in textBox1";
 }
private void button2_Click(object sender, System.EventArgs e)
......{
 IDataObject iData = Clipboard.GetDataObject();
 if(iData.GetDataPresent(DataFormats.Text))
 ......{
 textBox2.Text = (String)iData.GetData(DataFormats.Text);
 }
 else
......{
 textBox2.Text = "Could not retrieve data off the clipboard.";
 }
 }
 }
}