.net Excel转换DataSet

        /// <summary>
        /// 将Excel文件转成DataSet
        /// </summary>
        /// <param name="filepath">文件路径</param>
        /// <returns></returns>
        public static DataSet XlsConvertDataSet(string filepath)
        {
            DataSet ds = new DataSet();
            try
            {
                string strCon = "";
                //获取文件后缀
                string gvFileExtension = System.IO.Path.GetExtension(filepath);
                //判断是否为Excel文件
                if (gvFileExtension == ".xls")
                {
                    strCon = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filepath + ";Extended Properties='Excel 8.0;IMEX=1'";
                }
                if (gvFileExtension == ".xlsx")
                {
                    strCon = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filepath + ";Extended Properties="Excel 12.0;HDR=YES;IMEX=1;"";
                }

                System.Data.OleDb.OleDbConnection Conn = new System.Data.OleDb.OleDbConnection(strCon);
                string strCom = "SELECT * FROM [Sheet1$]";
                Conn.Open();
                System.Data.OleDb.OleDbDataAdapter myCommand = new System.Data.OleDb.OleDbDataAdapter(strCom, Conn);
                myCommand.Fill(ds, "[Sheet1$]");
                Conn.Close();
            }
            catch (Exception ex)
            {
              //ex.Message;
            }
            return ds;
        }