Button click not working inside update panel

Question

When I use Button inside Update panel it doesnot fire click event but outside the update panel it works.
here is the code

<asp:UpdatePanel ID="updatePanel2" runat="server" UpdateMode="Conditional" ChildrenAsTriggers="false">
    <ContentTemplate>
    <asp:Button ID="btnBlock" class="Button" Text="BlockCalls" runat="server"       
            onclick="btnBlock_Click" Enabled="True" Width="100px" />  
    </ContentTemplate>
    <Triggers>
        <asp:AsyncPostBackTrigger ControlID="btnBlock" /> 
    </Triggers>
</asp:UpdatePanel>

code for button is

protected void btnBlock_Click(object sender, EventArgs e)
{        
    CtiWS.CtiWS CtiWS1 = new CtiWS.CtiWS();
    Response.Write("<script>alert('"+Convert.ToString(Session["BlockCalls"])+"')</script>");
    if (btnBlock.Text == "BlockCalls")
    {
        btnBlock.Text = "UnBlockCalls";
        CtiWS1.BlockCalls("", "", HttpContext.Current.Session["HOSTID"].ToString()); //server block calls
    }
    else
    {
        btnBlock.Text = "BlockCalls";
        CtiWS1.BlockCalls("", "", HttpContext.Current.Session["HOSTID"].ToString()); //server unblock calls 
    }

}

you just need to give postback trigger instead of asychrinous postback — Sumit Pathak, Aug 01 '14 at 08:02
I dont want page to refresh after Button is clicked. when I use postback trigger it refreshes the page — user3713775, Aug 01 '14 at 08:07
just seen this link.....http://stackoverflow.com/questions/7650592/button-inside-update-panel-is-not-triggered-in-asp-net @user3713775 — Sumit Pathak, Aug 01 '14 at 08:21

score 10 · Accepted Answer · answered Aug 01 '14 at 08:04

10

Try this

set ChildrenAsTriggers to true and add EventName="Click" in asp:AsyncPostBackTrigger

<asp:UpdatePanel ID="updatePanel2" runat="server" UpdateMode="Conditional" 
                ChildrenAsTriggers="true">
   <ContentTemplate>
    <asp:Button ID="btnBlock" class="Button" Text="BlockCalls" runat="server"       
                 onclick="btnBlock_Click" Enabled="True" Width="100px" />  
   </ContentTemplate>
   <Triggers>
     <asp:AsyncPostBackTrigger ControlID="btnBlock" EventName="Click"/> 
    </Triggers>
</asp:UpdatePanel>

answered Aug 01 '14 at 08:04

Sid M

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2

Why do you need a trigger for the button? It's in the Update Panel - ChildrenAsTriggers is true - you don't need it. – Martin Smellworse Aug 01 '14 at 08:48
1

@MartinSmellworse because the ChildrenAsTriggers is a full postback trigger request. If you want to do an Async trigger, you need to be specific – Fandango68 Jul 05 '16 at 06:36

Button click not working inside update panel

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