asp.net中如何读取Excel的数据到sql数据库

publicDataSet ImportExcel(string strFileName)         //strFileName指定的路径+文件名.xls
        {
if (strFileName != "")
            {
string conn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + strFileName + ";Extended Properties=Excel 8.0";
string sql = "select * from [Sheet1$]";
OleDbDataAdapter da = newOleDbDataAdapter(sql, conn);
DataSet ds = newDataSet();
try
                {
                    da.Fill(ds, "datatable");
                }
catch
                {

                }
return ds;
            }
else
            {
return null;
            }
        } 

public void ImportExcel(string fileName )
    {
        //string fileName = "d:\\123.xls";
        string excelStr = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + fileName + ";Extended Properties='Excel 8.0;HDR=YES;IMEX=1'";//execl 2003
       //string excelStr = "Provider= Microsoft.Ace.OleDB.12.0;Data Source=" + fileName + ";Extended Properties='Excel 12.0;HDR=YES;IMEX=1'";//execl 2007以上（需要装个AccessDatabaseEngine引擎，网上找找）
        DataSet ds = new DataSet();
        using (System.Data.OleDb.OleDbConnection cn = new OleDbConnection(excelStr))
        {
            using (OleDbDataAdapter dr = new OleDbDataAdapter("SELECT * FROM [sheet1$]", excelStr))
            {
                dr.Fill(ds);
            }
        }
        //插入到数据库
    }