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Timed updates of web user controls in docks

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Dock
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Thomas
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Thomas asked on 19 Jul 2012, 09:07 AM
What is the right way to implement timed updates of web user controls in dynamically created docks?
Every web user control is loaded in it's own dock and the dock/user control should be updated with a specific interval.
Every dock/user control should have various update intervals.

Any ideas?

Thanks.

/Thomas

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Slav
Telerik team
answered on 23 Jul 2012, 11:36 AM
Hello Thomas,

You can use the following approach:
  • Insert an UpdatePanel control in the content of every RadDock. The user control in every dock control will be placed inside the UpdatePanel.
  • Create a Timer control, which will trigger the AJAX request, for every RadDock and set it as an AsyncPostBackTrigger for the according UpdatePanel.
  • Configure the UpdatePanels with UpdateMode="Conditional" in order to ensure that every UpdatePanel will update only its content.

Kind regards,
Slav
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Thomas
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answered on 15 Aug 2012, 09:50 AM
I can't put an UpdatePanel inside the dock as you describe. Do you have an example that shows how to achieve what I want?

Parser Error Message: Type 'Telerik.Web.UI.RadDock' does not have a public property named 'UpdatePanel'.

Source Error: 

Line 17: <telerik:RadDockZone ID="RadDockZone1" runat="server" Height="300px" Width="300px"> 
Line 18: <telerik:RadDock ID="RadDock1" runat="server" Width="300px" UniqueName="RadDock1" Tag="TimedWidget1.ascx"> 
Line 19: <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional"> 
Line 20: </asp:UpdatePanel> 
Line 21: </telerik:RadDock>
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Thomas
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answered on 15 Aug 2012, 12:13 PM
I can see there is a content template. I'll have a look at that. Still, I would like if you could provide me with an example showing the use of timed updated panels inside docks!?

Thanks.

/Thomas
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Thomas
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answered on 16 Aug 2012, 01:08 PM

For anyone who might be struggeling with the same issue, I've posted a full working example with 2 timers that asynchronously updates 2 web user controls in their own docks.

/Thomas

Default.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WidgetTimedUpdates._Default" %>
 
<%@ Register Assembly="DevExpress.Web.v10.2, Version=10.2.6.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a"
    Namespace="DevExpress.Web.ASPxTimer" TagPrefix="dx" %>
 
<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>
 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
 
         <telerik:RadScriptManager ID="RadScriptManager1" runat="server">
        </telerik:RadScriptManager>
         <asp:Timer ID="Timer1" runat="server" Interval="1000" ontick="Timer1_Tick">
         </asp:Timer>
         <asp:Timer ID="Timer2" runat="server" Interval="5000" ontick="Timer2_Tick">
         </asp:Timer>
        <telerik:RadDockLayout ID="RadDockLayout1" runat="server">
            <telerik:RadDockZone ID="RadDockZone1" runat="server" Height="300px" Width="300px">
                <telerik:RadDock ID="RadDock1" runat="server" Width="300px" UniqueName="RadDock1" Tag="TimedWidget1.ascx" Title="Reloads every sec">
                    <ContentTemplate>
                        <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
                            <Triggers>
                                <asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
                            </Triggers>
                            <ContentTemplate>
 
                            </ContentTemplate>
                        </asp:UpdatePanel>
                    </ContentTemplate>
                </telerik:RadDock>
                <telerik:RadDock ID="RadDock2" runat="server" Width="300px" UniqueName="RadDock2" Tag="TimedWidget2.ascx" Title="Reloads every 5 sec">
                    <ContentTemplate>
                        <asp:UpdatePanel ID="UpdatePanel2" runat="server" UpdateMode="Conditional">
                            <Triggers>
                                <asp:AsyncPostBackTrigger ControlID="Timer2" EventName="Tick" />
                            </Triggers>
                            <ContentTemplate>
 
                            </ContentTemplate>
                        </asp:UpdatePanel>
                    </ContentTemplate>
                </telerik:RadDock>
            </telerik:RadDockZone>
            <telerik:RadDockZone ID="RadDockZone2" runat="server" Height="300px" Width="300px">
            </telerik:RadDockZone>
        </telerik:RadDockLayout>
    </div>
    </form>
</body>
</html>

Default.aspx.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Telerik.Web.UI;
 
namespace WidgetTimedUpdates
{
    public partial class _Default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!Page.IsPostBack)
            {
                LoadWidget(RadDock1, UpdatePanel1);
                LoadWidget(RadDock2, UpdatePanel2);
            }
        }
      
 
        public void LoadWidget(RadDock dock, UpdatePanel panel)
        {
            if (string.IsNullOrEmpty(dock.Tag))
            {
                return;
            }
            Control widget = LoadControl(dock.Tag);
 
            panel.ContentTemplateContainer.Controls.Add(widget);
        }
 
        protected void Timer1_Tick(object sender, EventArgs e)
        {
            LoadWidget(RadDock1, UpdatePanel1);
        }
 
        protected void Timer2_Tick(object sender, EventArgs e)
        {
            LoadWidget(RadDock2, UpdatePanel2);
        }
    }
 
 
}

TimedWidget1.ascx (Web User Control)
<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="TimedWidget1.ascx.cs" Inherits="WidgetTimedUpdates.TimedWidget1" %>
<asp:Label ID="Label1" runat="server" Text="Hello widget world 1"></asp:Label>

TimedWidget1.ascx.cs (Web User Control)
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
 
namespace WidgetTimedUpdates
{
    public partial class TimedWidget1 : System.Web.UI.UserControl
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            DateTime now = new DateTime();
            now = DateTime.Now;
            Label1.Text = now.Millisecond.ToString();
        }
    }
}

TimedWidget2.ascx (Web User Control)

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="TimedWidget2.ascx.cs" Inherits="WidgetTimedUpdates.TimedWidget2" %>
<asp:Label ID="Label1" runat="server" Text="Hello widget world 2"></asp:Label>

TimedWidget2.ascx.cs (Web User Control)
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
 
namespace WidgetTimedUpdates
{
    public partial class TimedWidget2 : System.Web.UI.UserControl
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            DateTime now = new DateTime();
            now = DateTime.Now;
            Label1.Text = now.Millisecond.ToString();
        }
    }
}







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