This is a migrated thread and some comments may be shown as answers.

UserControl LoadTemplate() button click event not firing

11 Answers 360 Views

Window

This is a migrated thread and some comments may be shown as answers.

dstj asked on 04 Dec 2009, 10:43 PM

Hi,

I'm trying to load a UserControl in a RadWindow. It gets displayed but the button click events do not get fired.

When doing the exact same thing with a RadDock, the button click event in the UserControl gets call as expected. Here is the code used to load the UserControl (largely inspired from this thread).

Can you tell me what is wrong ? Why is the Button click event not callled with the RadWindow, but called with the RadDock ?

Thanks,

Dominic.

Default.aspx:

    
            <%@ Page Language="C#" AutoEventWireup="false" CodeBehind="Default.aspx.cs" Inherits="WebApplication1._Default" %> 
        
            <%@ 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></title> 
        
            </head> 
        
            <body> 
        
               <form id="form1" runat="server"> 
        
               <telerik:RadScriptManager ID="RadScriptManager1" runat="server" /> 
        
               <telerik:RadWindowManager ID="RadWindowManager1" ShowContentDuringLoad="true" VisibleStatusbar="false" runat="server" /> 
        
               <telerik:RadDockLayout runat="server" ID="RadDockLayout1"> 
        
                  <telerik:RadDockZone runat="server" ID="RadDockZone1" Width="300" MinHeight="200" /> 
        
               </telerik:RadDockLayout> 
        
               </form> 
        
            </body> 
        
            </html>

Default.aspx.cs

    
                  void Page_Init(object sender, EventArgs e) 
        
                  { 
        
                     this.EnableViewState = false; 
        
                     RadWindow RadWindow1 = new RadWindow(); 
        
                     RadWindow1.ID = "RadWindow1";   
        
                     RadWindow1.VisibleOnPageLoad = true; 
        
                     RadWindow1.ContentTemplate = new TestTemplate(Page); 
        
                     RadWindowManager1.Windows.Add(RadWindow1); 
        
                     RadDock RadDock1 = new RadDock ();   
        
                     RadDock1.Text = RadDock1.ID = "RadDock1";   
        
                     RadDock1.ContentTemplate = new TestTemplate(this.Page); 
        
                     RadDockZone1.Controls.Add(RadDock1); 
        
                  } 
        
               } 
        
               internal class TestTemplate : ITemplate 
        
               { 
        
                  private Page _page; 
        
                  public TestTemplate(Page page) 
        
                  { 
        
                     _page = page; 
        
                  } 
        
                  public void InstantiateIn(Control container) 
        
                  { 
        
                     System.Web.UI.UserControl userControl; 
        
                     userControl = (System.Web.UI.UserControl)_page.LoadControl("~/TestControl.ascx"); 
        
                     container.Controls.Add(userControl); 
        
                  } 
        
               }

TestControl.ascx

    
            <%@ Control Language="C#" AutoEventWireup="false" CodeBehind="TestControl.ascx.cs" Inherits="WebApplication1.TestControl" %> 
        
            <%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %> 
        
            User control used as template with button events. 
        
            <div> 
        
               <asp:Button ID="btn1" runat="server" Text="Button with tooltip" ToolTip="Hello World" /> 
        
               <asp:Button ID="btn2" runat="server" Text="Button" /> 
        
            </div> 
        
            <p><asp:Literal ID="ltrl" runat="server" /></p> 
        
            <telerik:RadToolTipManager ID="rttm" runat="server" AutoTooltipify="true" />

TestControl.ascx.cs :

    
               public partial class TestControl : System.Web.UI.UserControl 
        
               { 
        
                  override protected void OnInit(EventArgs e) 
        
                  { 
        
                     base.OnInit(e); 
        
                     btn1.Click += new EventHandler(btn1_Click); 
        
                     btn2.Click += new EventHandler(btn2_Click); 
        
                  } 
        
                  void btn1_Click(object sender, EventArgs e) 
        
                  { 
        
                     ltrl.Text = "Button 1 was clicked"; 
        
                  } 
        
                  protected void btn2_Click(object sender, EventArgs e) 
        
                  { 
        
                     ltrl.Text = "Button 2 was clicked"; 
        
                  } 
        
               }

11 Answers, 1 is accepted

answered on 10 Dec 2009, 08:43 AM

test-demo.zip

Hello dstj,

I built up a test demo but unfortunately to no avail - the server click event was correctly fired as expected. Please, see the attached demo and let me know what should I do to reproduce the issue locally.

Greetings,
Svetlina
the Telerik team

Instantly find answers to your questions on the new Telerik Support Portal.
Watch a video on how to optimize your support resource searches and check out more tips on the blogs.

answered on 10 Dec 2009, 02:39 PM

Hi, thanks for the reply. Your demo is somewhat incorrect though, as it does not use a RadWindowManager as I do, but a RadWindow directly in the markup. My RadWindow is created programmatically and added to the Manager.

My code:

    
            <telerik:RadWindowManager ID="RadWindowManager1" ShowContentDuringLoad="true" VisibleStatusbar="false" runat="server" />

Your code:

    
            <telerik:RadWindow ID="wnd" runat="server" VisibleOnPageLoad="true"></telerik:RadWindow>

In your version, the events work correctly. In my version, they do not. Is my method a wrong usage? Is adding a RadWindow programmatically not supported?

Thanks,

dstj.

Accepted

answered on 11 Dec 2009, 11:23 AM

Hello guys,

I was able to reproduce the issue only when the radWindow is added to the RadWindowManager. The issue is already fixed as well as the problem with RadAjaxManager integration but the fix will be available in the next major release which is scheduled for the beginning of March.

For the time being what I can suggest is to use a separte RadWindow - there is no problem to have RadWindowManager declared and also additional separate RadWindows on the same page and the issue does not occur when a separate RadWindow is declared.

Let me know whether the separate RadWindow solution fixed the problem on your side.

Best wishes,
Svetlina
the Telerik team

Instantly find answers to your questions on the new Telerik Support Portal.
Watch a video on how to optimize your support resource searches and check out more tips on the blogs.

answered on 10 May 2013, 10:26 AM

Hello,

A RadWindowManager tries to persist the RadWindows in its Windows collection and to recreate it from the stored state it has to first Clear() it, so dynamic controls in it will be lost, and hence postback events will not be fired for them. This concept was created first when the control had no ContentTemplate and thus did not have this behavior, and it should not be changed to preserve backwards compatibility.

When using the ContentTemplate of a RadWindow it is better to have this RadWindow standalone on the page, not as a part of a RadWindowManager. When doing so its controls will not be lost even if they are dynamic.

Regards,
Marin Bratanov
the Telerik team

If you want to get updates on new releases, tips and tricks and sneak peeks at our product labs directly from the developers working on the RadControls for ASP.NET AJAX, subscribe to their blog feed now.

answered on 15 May 2013, 10:19 AM

Hi Manjunath,

Generally, I would advise on posting unrelated questions in separate threads to make each discussion more concise.

On the exact issue at hand - without having any concrete information on the matter I can only make several suggestions:
- if you are using RadHtmlChart - the OnClientSeriesClicked client-side event can be used and you can navigate to the desired page by using the JavaScript objects that allow you to - window.location = "desiredpage.aspx?mydata=mydata". This event also lets you obtain a lot of information about the given chart, as shown in the article I linked above.
- if you are using RadChart examine this help article on working with its server side events and this one on using JavaScript on a series click. Also, if you are using AJAX note that you cannot redirect the page on the server during a partial postback.

Greetings,
Marin Bratanov
the Telerik team

Product Bundles

DevCraft

Web

Mobile

Document Management

Desktop

Reporting & Mocking

Automated Testing

CMS

UI/UX Tools

Debugging

Free Tools

Support and Learning

Productivity and Design Tools

UserControl LoadTemplate() button click event not firing

11 Answers, 1 is accepted