摘要：
protectedvoidPage_Load(objectsender,EventArgse){SQLHelpersqH;if(!Page.IsPostBack){sqH=newSQLHelper();stringstrSelPro="SELECT[proName]FROM[db_city].[dbo].[tb_province]";DataTabledt=sqH.ExecuteQuery(strSelPro,CommandType.Text);if(dt.Rows.Count>0){DropDownList1.DataSource=dt;DropDownList1. 阅读全文
