Form1.cs

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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;
using System.Collections;

namespace 像Excel一样复制DataGridView中的单元格区域数据
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            //向DataGridView中添加数据
            this.dataGridView1.ColumnCount = 5;
            this.dataGridView1.Rows.Add(new string[] { "一", "二", "三", "四", "五" });
            this.dataGridView1.Rows.Add(new string[] { "六", "七", "八", "九", "十" });
            this.dataGridView1.Rows.Add(new string[] { "十一", "十二", "十三", "十四", "十五" });
            this.dataGridView1.Rows.Add(new string[] { "十六", "十七", "十八", "十九", "二十" });
            this.dataGridView1.Rows.Add(new string[] { "二十一", "二十二", "二十三", "二十四", "二十五" });
            this.dataGridView1.AutoResizeColumns();
            this.dataGridView1.ClipboardCopyMode = DataGridViewClipboardCopyMode.EnableWithoutHeaderText;
        }

        private string str = "";
        private bool Bool_Blank = false;//单元格是否为空
        private bool Bool_All = false;//是否全部替换

        private void button1_Click(object sender, EventArgs e)
        {
            str = CopyDataGridView(dataGridView1);
            AddDataGridView(dataGridView2, str, Bool_Blank, Bool_All);
        }

        /// <summary>
        /// 通过剪贴板复制DataGridView控件中所选中的内容.
        /// </summary>
        /// <param DGView="DataGridView">DataGridView类</param>
        /// <return>字符串</return>
        public string CopyDataGridView(DataGridView DGView)
        {
            string tem_str = "";
            if (DGView.GetCellCount(DataGridViewElementStates.Selected) > 0)
            {
                try
                {
                    //将数据添加到剪贴板中
                    Clipboard.SetDataObject(DGView.GetClipboardContent());
                    //从剪贴板中获取信息
                    tem_str = Clipboard.GetText();
                }
                catch (System.Runtime.InteropServices.ExternalException)