我想在dropwnlist的零元素中显示选择项

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问题描述

当我与数据库的dropwnlist绑定时，我想将选择项添加到dropdownlist第零个元素中

i want to add the select item in dropdownlist zero''th element when i dound with that dropwnlist with the database
how it can be possible

推荐答案

ddl.Items.Insert(0, new ListItem("-Select-", "0"));

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并且，如果有帮助，别忘了将其标记为答案. :)

Hope this will help you.
And don''t forget to mark as answer if it helps. :)

<asp:dropdownlist id="DropDownList1" runat="server" width="200px" xmlns:asp="#unknown">
            AppendDataBoundItems="true" DataSourceID="sdsdropdown" DataTextField="Name" 
             DataValueField="Id">
         </asp:dropdownlist>

<asp:SqlDataSource ID="sdsdropdown" runat="server" 

                            ConnectionString="<%

或

<asp:dropdownlist id="DropDownList1" runat="server" width="200px" xmlns:asp="#unknown">
              DataSourceID="sdsdropdown" DataTextField="Name" 
             DataValueField="Id">
         </asp:dropdownlist>



<asp:sqldatasource id="sdsdropdown" runat="server" connectionstring="<%

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