.NET中使用OleDb读取Excel

在.NET中可以用OleDb(Object linking and embeding DataBase)来访问Excel

 using System;
 using System.Data;
 using System.Windows.Forms;
 using System.Data.OleDb;

 namespace ExcelDemo
 {
     public partial class Form1 : Form
     {
         public Form1()
         {
             InitializeComponent();
         }

         private void button1_Click(object sender, EventArgs e)
         {
             //xls为Excel2003-2007版本的Excel文件后缀,而xlsx为2007以上版本的后缀名
             //var dt = ExcelToDataTable(@"E:\WorkSpace\VS\ExcelDemo\test.xls", "sheet1");
             var dt = ExcelToDataTable(@"E:\WorkSpace\VS\ExcelDemo\test.xlsx", "sheet1");
             this.dataGridView1.DataSource=dt;
         }
         private DataTable ExcelToDataTable(string strExcelFileName, string strSheetName)
         {
             //Jet和Ace都是连接Excel对象的接口引擎,但是二者有区别.
             //string strConn = "Provider=Microsoft.Jet.OLEDB.8.0;" + "Data Source=" + strExcelFileName + ";" +
             //"Extended Properties='Excel 8.0;HDR=Yes;IMEX=1';";
             string strConn = @"Provider=Microsoft.Ace.OLEDB.12.0;" + "Data Source=" + strExcelFileName + ";" +
                 "Extended Properties='Excel 12.0;HDR=Yes;IMEX=1';";
             string strExcel = string.Format("select * from [{0}$]", strSheetName);
             //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
             OleDbConnection connection = new OleDbConnection(strConn);
             connection.Open();
             OleDbDataAdapter da = new OleDbDataAdapter(strExcel,connection);
             var ds = new DataSet();
             da.Fill(ds,strSheetName);
             return ds.Tables[strSheetName];
         }
     }
 }

最开始用的Excel对象接口引擎为Jet,但是在测试时发现对于Excel2013版本的文件,在执行到31行时会报错"外部表不是标准格式".将Excel另存为2003-2007版本时不报错.

原来Jet引擎和Ace引擎是有区别的,具体参考 http://blog.csdn.net/xifeijian/article/details/8333396