0
我有两个下拉列表,程度和程序分别,我想根据从度下拉列表中选择的程度生成程序列表值。我怎么能做到这一点,代码如下:将参数传递给SQLDataSource
<asp:DropDownList ID="Degree_DList" runat="server" DataSourceID="Degrees_DropdownList"
DataTextField="DEGREE_NAME" DataValueField="DEGREE_ID" AppendDataBoundItems="True">
</asp:DropDownList>
<asp:SqlDataSource ID="Degrees_DropdownList" runat="server" ConnectionString="<%$ ConnectionStrings:admConnectionString %>" ProviderName="<%$ ConnectionStrings:admConnectionString.ProviderName %>"
SelectCommand="SELECT DEGREE_ID, DEGREE_NAME FROM DEGREE"> </asp:SqlDataSource>
<asp:DropDownList ID="Program_Dlist" runat="server" AppendDataBoundItems="True" DataSourceID="Programs_DropdownList" DataTextField="PROGRAM_NAME" DataValueField="PROGRAM_ID"></asp:DropDownList>
<asp:SqlDataSource ID="Programs_DropdownList" runat="server" ConnectionString="<%$ ConnectionStrings:admConnectionString %>" ProviderName="<%$ ConnectionStrings:admConnectionString.ProviderName %>"
SelectCommand="SELECT PROGRAM_ID, PROGRAM_NAME FROM PROGRAMS WHERE DEGREE_ID = @DEGREE_ID"><SelectParameters>
<asp:ControlParameter Name="DEGREE_ID" ControlID="Degree_DList" PropertyName="SelectedValue" />
</SelectParameters>
</asp:SqlDataSource>
现在它在DropDown列表中没有显示任何内容 – Umair 2012-03-13 09:58:41
哪一个?用于第一个下拉列表的应该保持不变。对于第二个你应该提供输入的地方(我想反应selectedindexchanged)。 – 2012-03-13 10:05:33
我想第二个下拉列表完全动态,它会根据第一个下拉列表中的选定项目生成值列表 – Umair 2012-03-13 10:12:52