RadioButtonList的OnSelectedIndexChanged什么时候执行

Question

 <asp:RadioButtonList   ID="rdoChoose"  runat="server" RepeatDirection="Horizontal"  RepeatLayout="Flow" OnSelectedIndexChanged="rdoChoose_SelectedIndexChanged">
                   <asp:ListItem Selected="false" Value="Name" >按名称</asp:ListItem>
                   <asp:ListItem Value="Datetimes" Selected="True">按日期</asp:ListItem>
               </asp:RadioButtonList>
               <asp:TextBox  ID="txtKeyword" runat="server" CssClass="input_width1" onfocus="new WdatePicker(this,'%Y-%M-%D',false,'whyGreen')" ></asp:TextBox>
                <asp:TextBox ID="TextBox1" runat="server" CssClass="input_width1"></asp:TextBox>
选择名称时，让第一个文本框隐藏，我该怎么写啊
选择日期时，让第二个文本框隐藏，改怎么实现啊

Answer 1

OnSelectedIndexChanged事件是在服务器端执行的
所以要把RadioButtonList 的autopostback设为true

Answer 2

在你改变按钮的选项时 执行啊OnSelectedIndexChanged事件是在服务器端执行的 
所以要把RadioButtonList 的autopostback设为true

Answer 3

触发下拉框值改变的事件，判断下拉框的value

Answer 4

 protected void rdoChoose_SelectedIndexChanged(object sender, EventArgs e)
        {
            switch (rdoChoose.SelectedValue)
            {
                case "Name":
                    {
                        this.txtKeyword.Style.Add("display","none");
                        this.TextBox2.Style.Remove("display");
                        break;
                    }
                case "Datetimes":
                    {
                        this.TextBox2.Style.Add("display", "none");
                        this.txtKeyword.Style.Remove("display");
                        break;
                    }
                default: break;
            }
        }还有就是加上AutoPostBack=true;