its not triggering the button click event?

[jaseemameer]

Its not working for me.

My aspx page:
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>

<asp:Button ID="Button1" runat="server" Text="Button" Visible="False" OnClick="Button1_Click" />

<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional" >

<ContentTemplate>
<asp:TreeView ID="tvCont" runat="server" ShowCheckBoxes="All">
<DataBindings>
<asp:TreeNodeBinding DataMember="Group" SelectAction="Expand" Text="gname"
Value="gid" />
</DataBindings>
</asp:TreeView>

</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="Button1" EventName="Click"/>
</Triggers>
</asp:UpdatePanel>

In page load:
tvCont.Attributes.Add("OnClick", "Button1_Click")

and

button click event.

whats wrong in the above code, its not triggering the button click event?

 

[JohnH]

This is not related to original question, so I split the thread. Start new threads for new different questions.