1 using System;
 2 using System.Data;
 3 using System.Windows.Forms;
 4 using System.Data.OleDb;
 5 
 6 namespace ExcelDemo
 7 {
 8     public partial class Form1 : Form
 9     {
10         public Form1()
11         {
12             InitializeComponent();
13         }
14 
15         private void button1_Click(object sender, EventArgs e)
16         {
17             //xls为Excel2003-2007版本的Excel文件后缀,而xlsx为2007以上版本的后缀名
18             //var dt = ExcelToDataTable(@"E:\WorkSpace\VS\ExcelDemo\test.xls", "sheet1");
19             var dt = ExcelToDataTable(@"E:\WorkSpace\VS\ExcelDemo\test.xlsx", "sheet1");
20             this.dataGridView1.DataSource=dt;
21         }
22         private DataTable ExcelToDataTable(string strExcelFileName, string strSheetName)
23         {
24             //Jet和Ace都是连接Excel对象的接口引擎,但是二者有区别.
25             //string strConn = "Provider=Microsoft.Jet.OLEDB.8.0;" + "Data Source=" + strExcelFileName + ";" + 
26             //"Extended Properties=‘Excel 8.0;HDR=Yes;IMEX=1‘;";
27             string strConn = @"Provider=Microsoft.Ace.OLEDB.12.0;" + "Data Source=" + strExcelFileName + ";" + 
28                 "Extended Properties=‘Excel 12.0;HDR=Yes;IMEX=1‘;";
29             string strExcel = string.Format("select * from [{0}$]", strSheetName);
30             //创建OleDb连接,对于特定的数据源类型,传入不同的连接字符串
31             OleDbConnection connection = new OleDbConnection(strConn);
32             connection.Open();
33             OleDbDataAdapter da = new OleDbDataAdapter(strExcel,connection);
34             var ds = new DataSet();
35             da.Fill(ds,strSheetName);
36             return ds.Tables[strSheetName];
37         }
38     }
39 }