如何使用中继器在数据库的下拉列表中显示值? [英] How to display a value in drop down list from database using repeater?

问题描述

大家好，

我是这个领域的新手，请帮帮我.


我想显示从数据库表到asp.net控件的值，如文本框等.使用转发器，我在控件中显示所有值.现在，我想在dropdownlist中显示一个值作为选定值.该怎么办?

请帮帮我......

Hi guys,

I am new to this field so please help me out.


I want to display value from database table to asp.net controls lik textbox etc.... Using repeater i am displaying all values in controls .Now i want to display a value as selected value in dropdownlist . What to do?

Please help me guys......

推荐答案

1)处理 DataBinding 事件

2)下拉列表的Items集合具有FindByValue，FindByText方法之类的方法.使用它可以从下拉列表中获取ListItem.

3)将ListItem''s Selected属性设置为True

1) Handle the DataBinding event

2) Dropdown list''s Items collection has methods like FindByValue,FindByText methods. Using that you can get the ListItem from the dropdownlist.

3) Set the ListItem''s Selected property to True

Hi，

试试这个

Hi,

try this

<asp:Repeater ID="Rep" runat="server" OnItemDataBound="rep_ItemDataBound">
                               <ItemTemplate>
                                   <table width="100%">
                                       <tr>
                                           <td valign="top" width="13%" align="left">
                                               <asp:DropDownList ID="Dropdown1" runat="server" Width="80px">
                                               </asp:DropDownList>
                                       </tr>
                               </ItemTemplate>
                               <FooterTemplate>
                                   </table>
                               </FooterTemplate>
                           </asp:Repeater>


//in the code behind section

in the repDataBound Event find that drop down and bind it
               
                    DropDownList myDD = (DropDownList)e.Item.FindControl("Dropdown1");
                    myDD.DataTextField = "Name";
                    myDD.DataValueField = "Id";
                    myDD.DataBind();

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