Reload a TreeView in ascx for every x seconds

See more:

ASP.NET

treeview

UpdatePanel

I have an ascx with a tree view and I need to reload the tree for every 10 seconds to check for new nodes. To do that I added an Update Panel with a timer to update the tree view.

Enterprise.ascx

<table height="100%" cellspacing="0" cellpadding="0" width="100%" border="0"><br />
        <tr><br />
            <td rowspan="3" width="100px"><br />
                    <table id="TreeTable" style="width: 250px; height: 100%" class=""><br />
                    <tr><br />
                        <td style="width: 100%" height="100%"><br />
                            <asp:Timer runat="server" id="Timer1" Interval="10000" OnTick="Timer1_Tick"></asp:Timer><br />
                             <asp:UpdatePanel runat="server" id="UpdatePanel1" UpdateMode="Conditional"><br />
                             <br />
                              <ContentTemplate><br />
                              <br />
                               <asp:Label ID="Label2" runat="server" CssClass="tableHeader" Text="Enterprises"<br />
                                Width="100%" Height="2%" ></asp:Label><br />
                                <div style="overflow: auto; width: 100%; height: 96%"><br />
                                <asp:TreeView ID="EntView" runat="server" Height="95%" ImageSet="BulletedList"<br />
                                    ShowExpandCollapse="False" ShowLines="True" Width="100%" <br />
                                    onselectednodechanged="EntView_SelectedNodeChanged"><br />
                                    <ParentNodeStyle Font-Bold="False" /><br />
                                    <HoverNodeStyle Font-Underline="True" ForeColor="#DDD" /><br />
                                    <SelectedNodeStyle Font-Bold="True" Font-Underline="True" ForeColor="#DDD" /><br />
                                    <RootNodeStyle Font-Bold="True" ForeColor="Black" /><br />
                                    <NodeStyle Font-Names="Verdana" Font-Size="10pt" ForeColor="Black" /><br />
                                </asp:TreeView><br />
                            </div><br />
                            <br />
                            </ContentTemplate><br />
                           </asp:UpdatePanel><br />
                         </td><br />
                    </tr><br />
                </table>

And the event in Enterprise.ascx.cs

Protected void Timer1_Tick(object sender, EventArgs e)
{
 this.UpdatePanel1.Update();
}

This is not updating the Tree view. Is this the correct way of refreshing? How to check whether the Timer is calling the event for every 10 seconds or not?