form1.cs

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using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace useClipboard
{
	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
        public System.Windows.Forms.TextBox textBox1;
        private System.Windows.Forms.Button button1;
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;

		public Form1()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

			//
			// TODO: Add any constructor code after InitializeComponent call
			//
		}

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
            this.textBox1 = new System.Windows.Forms.TextBox();
            this.button1 = new System.Windows.Forms.Button();
            this.SuspendLayout();
            // 
            // textBox1
            // 
            this.textBox1.Anchor = (((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
                | System.Windows.Forms.AnchorStyles.Left) 
                | System.Windows.Forms.AnchorStyles.Right);
            this.textBox1.Location = new System.Drawing.Point(8, 8);
            this.textBox1.Multiline = true;
            this.textBox1.Name = "textBox1";
            this.textBox1.Size = new System.Drawing.Size(280, 224);
            this.textBox1.TabIndex = 0;
            this.textBox1.Text = "";
            // 
            // button1
            // 
            this.button1.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
            this.button1.Location = new System.Drawing.Point(96, 240);
            this.button1.Name = "button1";
            this.button1.TabIndex = 1;
            this.button1.Text = "粘贴数据";
            this.button1.Click += new System.EventHandler(this.button1_Click);
            // 
            // Form1
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
            this.ClientSize = new System.Drawing.Size(292, 273);
            this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                          this.button1,
                                                                          this.textBox1});
            this.Name = "Form1";
            this.Text = "使用剪贴板";
            this.ResumeLayout(false);

        }
		#endregion

		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

        private void button1_Click(object sender, System.EventArgs e)
        {
            PasteData();
        }

        private void PasteData() 
        { 
            IDataObject iData = Clipboard.GetDataObject(); 

            // 探测数据是否是可以使用的格式
            if(iData.GetDataPresent(DataFormats.Text)) 
            { 
                string str = (String)iData.GetData(DataFormats.Text); 
                textBox1.Text = str;
            } 
        } 
	}
}