updatepanel refresh whole page in asp.net - asp.net

Question

I use updatepanel in my page like this.
but when I run my app when I click on button that's refresh all of my page.
I do'nt know what I can do to solve this error.
even I use treeview in other page that when I get this error the treeview icon dont show.
please help me.
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="updPanl" runat="server" RenderMode="Block" UpdateMode="Conditional" >
<ContentTemplate>
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Button" />
</ContentTemplate>
</asp:UpdatePanel>

Answer 1

try this
<asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>
<asp:UpdatePanel ID="updPanl" ChildrenAsTriggers="true" runat="server" RenderMode="Block" UpdateMode="Conditional" >
<Triggers>
<asp:AsyncPostBackTrigger ControlID="Button1" EventName="Click" />
</Triggers>
<ContentTemplate>
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Button" />
</ContentTemplate>
</asp:UpdatePanel>
protected void Button1_Click(object sender, EventArgs e)
{
updPanl.Update();
}

Answer 2

after three days I can find this problem today so I answer this question maybe this help to otherone.
I use routin in my app so webresource and scriptresouce could not load in asp page
I use this code for do not route this resource
routeCollection.Add(new Route("{resource}.axd/{*pathInfo}", new StopRoutingHandler()));