I have 2 drop down lists. When i select 1st value from the 1st ddl, the 2nd ddl gets disabled. When i select 2nd value from 1st ddl, the 2nd ddl enables. This just what I needed. But there is a problem. When the 2nd ddl gets disabled, its size increases
automatically & I don't want that. T have used table, update panel, trigger, content panel, still its not working.
I am attaching the portion of the code. Kindly help.
<td>
<label>Activity </label>
</td>
<td>
<asp:UpdatePanel ID="Update_Panel1" runat="server">
<ContentTemplate>
<asp:DropDownList ID="ddl_Activity1" runat="server" AutoPostBack="True"
class="w100" onselectedindexchanged="ddl_Activity1_SelectedIndexChanged">
<asp:ListItem Text="Create Permanent Water Holes" Value="1"></asp:ListItem>
<asp:ListItem Text="Improve Water Storage" Value="2"></asp:ListItem>
</asp:DropDownList>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="ddl_SubActivity1" EventName="SelectedIndexChanged"/>
</Triggers>
</asp:UpdatePanel>
</td>
<td>
<asp:label ID="lbl_SubActivity1" runat="server">Sub Activity</asp:label>
</td>
<td>
<asp:UpdatePanel ID="Update_Panel2" runat="server">
<ContentTemplate>
<asp:DropDownList ID="ddl_SubActivity1" runat="server"
class="w100" AutoPostBack="True">
<asp:ListItem Text="Desilting" Value="1"></asp:ListItem>
<asp:ListItem Text="Deepening" Value="2"></asp:ListItem>
<asp:ListItem Text="Repairing" Value="3"></asp:ListItem>
</asp:DropDownList>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="ddl_SubActivity1" EventName="SelectedIndexChanged"/>
</Triggers>
</asp:UpdatePanel>
</td>
