Hi Geert,
You should use a RadAjaxManager on your master page and then RadAjaxManagerProxy controls on your content pages. When creating the AjaxSettings dynamically in your content page code-behind, simply get a reference to the RadAjaxManager on the master page and add an AjaxSetting which causes each control to update the error control on your Master Page.
Here is a quick example:
Master.Master
| <%@ Master Language="C#" AutoEventWireup="true" CodeBehind="Master.master.cs" Inherits="Telerik.Examples.Master" %> |
| |
| <%@ 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"> |
| |
| <html xmlns="http://www.w3.org/1999/xhtml" > |
| <head runat="server"> |
| <title>Example - Always Updating a Control with the RadAjaxManager</title> |
| </head> |
| <body> |
| <form id="form1" runat="server"> |
| <telerik:RadScriptManager ID="RadScriptManager1" runat="server" /> |
| <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server" /> |
| <asp:Label ID="lblTimeMaster" runat="server" /> |
| <asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server" /> |
| </form> |
| </body> |
| </html> |
| |
Master.Master.cs
| using System; |
| |
| namespace Telerik.Examples |
| { |
| public partial class Master : System.Web.UI.MasterPage |
| { |
| protected void Page_Load(object sender, EventArgs e) |
| { |
| lblTimeMaster.Text = DateTime.Now.ToString(); |
| } |
| } |
| } |
| |
Default.aspx
| <%@ Page Title="" Language="C#" MasterPageFile="~/Master.Master" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="Telerik.Examples.Default" %> |
| |
| <%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %> |
| |
| <asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" runat="server"> |
| <telerik:RadAjaxManagerProxy ID="RadAjaxManagerProxy1" runat="server"> |
| <AjaxSettings> |
| <telerik:AjaxSetting AjaxControlID="Button1"> |
| <UpdatedControls> |
| <telerik:AjaxUpdatedControl ControlID="lblTime" /> |
| </UpdatedControls> |
| </telerik:AjaxSetting> |
| </AjaxSettings> |
| </telerik:RadAjaxManagerProxy> |
| |
| <asp:Label ID="lblTime" runat="server" /> |
| |
| <asp:Button ID="Button1" runat="server" Text="Click Me!" /> |
| </asp:Content> |
| |
Default.aspx.cs
| using System; |
| using System.Web.UI; |
| using Telerik.Web.UI; |
| |
| namespace Telerik.Examples |
| { |
| public partial class Default : System.Web.UI.Page |
| { |
| protected void Page_Load(object sender, EventArgs e) |
| { |
| var ajaxManager = Page.Master.FindControl("RadAjaxManager1") as RadAjaxManager; |
| if (ajaxManager != null) |
| { |
| var setting = new AjaxSetting("Button1"); |
| var updatedControl = new AjaxUpdatedControl { ControlID = "lblTimeMaster" }; |
| setting.UpdatedControls.Add(updatedControl); |
| ajaxManager.AjaxSettings.Add(setting); |
| } |
| |
| lblTime.Text = DateTime.Now.ToLongTimeString(); |
| } |
| } |
| } |
| |
I hope this helps. If you have further questions, please let me know.
Sincerely,
Kevin Babcock