VB.NET中Dropdown的选定值

Question

I have the following dropdown in my page:

<asp:DropDownList ID="cboEmployerType" runat="server" TabIndex="8" Width="60%" onclick="javascript:shouldsubmit=false;">
                       <asp:ListItem Value="Null">-Select-</asp:ListItem>
                       <asp:ListItem Value="E">Employer</asp:ListItem>
                       <asp:ListItem Value="O">OJT Provider</asp:ListItem>
                   </asp:DropDownList>

When I click a certain button, my dropdown should have selected value as -Select- . How do I do this?

I tried this in my code behind but doesn't work.

cboEmployerType.SelectedValue = "null"

Answer 1

You can set

cboEmployerType.SelectedIndex = 0

This will select your first value.