C# 读取excel文件到DATAVIEW

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;using System.Data;using System.Data.OleDb;namespace WindowsFormsApplication7{    public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }        public static DataSet GetExcelData(string str)        {            string strCon = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + str + ";Extended Properties='Excel 12.0;HDR=YES;IMEX=1;'";            OleDbConnection myConn = new OleDbConnection(strCon);            string strCom = " SELECT * FROM [Sheet1$]";            myConn.Open();            OleDbDataAdapter myCommand = new OleDbDataAdapter(strCom, myConn);            DataSet myDataSet = new DataSet();            myCommand.Fill(myDataSet, "[Sheet1$]");            myConn.Close();            return myDataSet;        }          private void button1_Click(object sender, EventArgs e)        {            OpenFileDialog filedialog = new OpenFileDialog();            string FileName = "";            if (filedialog.ShowDialog() == DialogResult.OK)            {                FileName = filedialog.FileName;                dGViewExcel.DataSource = GetExcelData(FileName);                dGViewExcel.DataMember = "[Sheet1$]";                for (int count = 0; (count <= (dGViewExcel.Rows.Count - 1)); count++)                {                    dGViewExcel.Rows[count].HeaderCell.Value = (count + 1).ToString();                }            }        }    }}