Dropdownlist,panel,用法(紧急求助)

Question

在Ddlpickdbname 的SelectedIndexChanged 事件中写

Answer 1

以上代码放到Ddlpickdbname的selectIndexChanged事件里

Answer 2

在page_load中写,当然每次都是执行if 
                            this.tablename = "Bookinfo";//图书表名                 this.Plpobook.Visible = true; 
                this.Plpoperiod.Visible = false; 
                this.Plpopaper.Visible = false; 
                this.Plpospedoc.Visible = false; 
                this.Plpovideo.Visible = false;