//复制： private void button1_Click(object sender, System.EventArgs e) { if(textBox1.SelectedText != "") Clipboard.SetDataObject(textBox1.SelectedText); } //粘贴： 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); } } C#WinForm中复制、粘贴文本到剪贴板原文：http://www.cnblogs.com/xihong2014/p/4202717.html