DataGridView中单元格合并及添加、显示行号

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.Data.SqlClient;

namespace UniteCells
{
    public partial class Form1 : Form
    {
        public Form1（）
        {
            InitializeComponent（）;
        }
        #region 声明的变量
        static string connectionString = “Data Source=.;Database=pubs;integrated security=sspi“;
        SqlConnection conn = new SqlConnection（connectionString）;
        SqlDataAdapter Adapter;
        DataSet dataSet = new DataSet（）;
        #endregion

        private void Form1_Load（object sender EventArgs e）
        {
            try
            {
                if （conn.State == 

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     文件         920  2009-01-09 14:23  sj\01\UniteCells\UniteCells.sln
     文件       14848  2009-02-23 09:11  sj\01\UniteCells\UniteCells.suo
     文件        4325  2009-02-23 09:11  sj\01\UniteCells\UniteCells\Form1.cs
     文件        2583  2009-01-09 14:31  sj\01\UniteCells\UniteCells\Form1.Designer.cs
     文件        5814  2009-01-09 14:31  sj\01\UniteCells\UniteCells\Form1.resx
     文件         491  2009-01-09 14:23  sj\01\UniteCells\UniteCells\Program.cs
     文件        3766  2009-01-09 14:28  sj\01\UniteCells\UniteCells\UniteCells.csproj
     文件       11264  2009-02-23 09:11  sj\01\UniteCells\UniteCells\bin\Debug\UniteCells.exe
     文件       28160  2009-02-23 09:11  sj\01\UniteCells\UniteCells\bin\Debug\UniteCells.pdb
     文件       14328  2009-02-23 09:11  sj\01\UniteCells\UniteCells\bin\Debug\UniteCells.vshost.exe
     文件         490  2007-07-21 01:33  sj\01\UniteCells\UniteCells\bin\Debug\UniteCells.vshost.exe.manifest
     文件        1706  2009-02-23 09:11  sj\01\UniteCells\UniteCells\obj\Debug\UniteCells.csproj.FileListAbsolute.txt
     文件         847  2009-02-23 09:11  sj\01\UniteCells\UniteCells\obj\Debug\UniteCells.csproj.GenerateResource.Cache
     文件       11264  2009-02-23 09:11  sj\01\UniteCells\UniteCells\obj\Debug\UniteCells.exe
     文件         180  2009-02-23 09:11  sj\01\UniteCells\UniteCells\obj\Debug\UniteCells.Form1.resources
     文件       28160  2009-02-23 09:11  sj\01\UniteCells\UniteCells\obj\Debug\UniteCells.pdb
     文件         180  2009-01-09 14:28  sj\01\UniteCells\UniteCells\obj\Debug\UniteCells.Properties.Resources.resources
     文件        1352  2009-01-09 14:23  sj\01\UniteCells\UniteCells\Properties\AssemblyInfo.cs
     文件        2870  2009-01-09 14:23  sj\01\UniteCells\UniteCells\Properties\Resources.Designer.cs
     文件        5612  2009-01-09 14:23  sj\01\UniteCells\UniteCells\Properties\Resources.resx
     文件        1095  2009-01-09 14:23  sj\01\UniteCells\UniteCells\Properties\Settings.Designer.cs
     文件         249  2009-01-09 14:23  sj\01\UniteCells\UniteCells\Properties\Settings.settings
     文件         935  2009-01-09 14:32  sj\02\DisplayRowCount\DisplayRowCount.sln
     文件       14848  2009-02-23 09:12  sj\02\DisplayRowCount\DisplayRowCount.suo
     文件        3776  2009-01-09 14:35  sj\02\DisplayRowCount\DisplayRowCount\DisplayRowCount.csproj
     文件        1991  2009-02-23 09:12  sj\02\DisplayRowCount\DisplayRowCount\Form1.cs
     文件        2579  2009-01-09 14:37  sj\02\DisplayRowCount\DisplayRowCount\Form1.Designer.cs
     文件        5814  2009-01-09 14:37  sj\02\DisplayRowCount\DisplayRowCount\Form1.resx
     文件         496  2009-01-09 14:32  sj\02\DisplayRowCount\DisplayRowCount\Program.cs
     文件       10240  2009-02-23 09:12  sj\02\DisplayRowCount\DisplayRowCount\bin\Debug\DisplayRowCount.exe
     文件       28160  2009-02-23 09:12  sj\02\DisplayRowCount\DisplayRowCount\bin\Debug\DisplayRowCount.pdb
............此处省略35个文件信息