CODEWITHSUNDEEP
asp.netupdatepanel
V.Prasad
V.Prasad

Reputation: 151

Avoid content page postback when master page dropdownlist value changed

I am running one asp.net application where i have one master page and content page. In master page i am using update panel inside dropdownlist. Now when i am running application then when i change dropdownlist value then first content page postback event fired after that master page postback event fired.

Below is my master page update panel with dropdown:

<asp:UpdatePanel runat="server" ID="updLOB" UpdateMode="Conditional">
     <ContentTemplate>
       <asp:DropDownList ID="ddl1" runat="server" OnSelectedIndexChanged="ddl1_SelectedIndexChanged" AutoPostBack="true">
      <asp:DropDownList>
      </ContentTemplate>
 </asp:UpdatePanel>

How do i avoid content page postback when dropdown list changed?

Upvotes: 0

Views: 775

Answers (2)

Nandish
Nandish

Reputation: 26

<asp:UpdatePanel runat="server" ID="updLOB" UpdateMode="Conditional">
     <ContentTemplate>
       <asp:DropDownList ID="ddl1" runat="server" 
OnSelectedIndexChanged="ddl1_SelectedIndexChanged" AutoPostBack="true">
      <asp:DropDownList>
      </ContentTemplate>
 <Triggers>
  <asp:AsyncPostBackTrigger ControlID="ddl1" 
     EventName="SelectedIndexChanged" />
   </Triggers>
 </asp:UpdatePanel>

Upvotes: 1

rt2800
rt2800

Reputation: 3045

you need to setup trigger source for updatepanel like below

<Triggers> <asp:AsyncPostBackTrigger ControlID="ddl1" EventName="SelectedIndexChanged" /> </Triggers>.

This should be embedded inside <asp:updatepanel> element

Upvotes: 0

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