How to avoid timer reset in asp.net/ajax - asp.net

Question

I am using updatepanel and timer to display an alert every 15 seconds. It is working fine when I am not clicking anything in the page. It displays alert every 15 seconds. I have a button outside of this updatepanel. Whenever I click this button, the timer resets and it doesn't display alert every 15 seconds. If I stops clicking the button, it starts to display the alert after 15 seconds. BAsically, timer resets the interval when ever I click teh button. I want to display the alert regardless clicking a button or not. Please help me.
in ASPX page
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional"
ViewStateMode="Enabled">
<Triggers>
<asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
</Triggers>
</asp:UpdatePanel>
<asp:Timer ID="Timer1" runat="server" Interval="15000" OnTick="Timer1_Tick">
</asp:Timer>
In .CS page
public void Timer1_Tick(object sender, EventArgs e)
{
ScriptManager.RegisterClientScriptBlock(UpdatePanel1, typeof(Page), "ToggleScript", "
alert('Hello')", true);
}

Answer 1

Reason looks lik your button do a post back and your timer in out side the update panel so it will reset.
if you can place your button in to another update panel this will work.
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional" ViewStateMode="Enabled">
<ContentTemplate>
<asp:Timer ID="Timer1" runat="server" Interval="10000" OnTick="Timer1_Tick">
</asp:Timer>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
</Triggers>
</asp:UpdatePanel>
<asp:UpdatePanel ID="UpdatePanel2" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" />
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
</ContentTemplate>
</asp:UpdatePanel>