C#读取EXCEL数据

 public static DataSet ImportExcel()
        {
            DataSet ds = new DataSet();
            string strConn = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=E:\\link.xlsx;Extended Properties=Excel 12.0";
            OleDbConnection Conn = new OleDbConnection(strConn);
            Conn.Open();
            OleDbDataAdapter data = new OleDbDataAdapter("select * from [Sheet1$]", strConn);
            data.Fill(ds);
            return ds;

        }

针对是2007版的EXCEL

如果写相对路径的话：

        DataSet ImportExcel() 
        {
            string n = Server.MapPath("link.xlsx");
            DataSet ds = new DataSet();
            string strConn = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source="+n+";Extended Properties=Excel 12.0";
            OleDbConnection Conn =new OleDbConnection(strConn);
            Conn.Open();
            OleDbDataAdapter data = new OleDbDataAdapter("select * from [Sheet1$]", strConn);
            data.Fill(ds);
            return ds;
        }

 上面是针对web，如果是控制台应用程序的话，它本身没有 Server.MapPath：

    public static DataSet ImportExcel()
        {
            string url ="\\link.xlsx";
            DataSet ds = new DataSet();
            string strConn = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source="+url+";Extended Properties=Excel 12.0";
            OleDbConnection Conn = new OleDbConnection(strConn);
            Conn.Open();
            OleDbDataAdapter data = new OleDbDataAdapter("select * from [Sheet1$]", strConn);
            data.Fill(ds);
            return ds;

        }