Hi,

Iam using ajax website in which i have master page.In different page i have update panel with some controls like button, textboxs and dropdownlist.When user select item in dropdownlist it should disappear some of the controls.But nothing is happening.i tried to put triggers but still wont work.could you please anyone help me.This is source code.

<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Button ID="btnSubmit" runat="server" Text="Submit" style="z-index: 100; left: 715px; position: absolute; top: 783px" OnClick="btnSubmit_Click" />
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID = "RadioButtonList1" EventName = "SelectedIndexChanged" />
</Triggers>
</asp:UpdatePanel>

In your DropDownList add the following property:

AutoPostback=true

Hope its helps.

please make sure that the AutoPostBack property is set to true of dropdownlist or radiobuttonlist..........