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Using radalert as server side "MessageBox"

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Window

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

Mats asked on 07 Feb 2008, 03:52 PM

Hi!

I am currently moving from RadControls for ASP.NET to Prometheus. I have a problem with the radalert function. It works fine in RadControls for ASP.NET but not in Prometheus.
I want to generate a "message box" with a message generated on server. I do it by registering a startup script in the script manager.
Using standard windows alert from server as well as radalert from client works fine.
But as soon as I use radalert from server then the radalert is 'undefined'. I guess that the RadWindowManager is 'undefined'.

How can I solve this problem?

Small code sample is attached below.

Thanks
/Mats

Default.aspx:

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>RadAlert</title>
</head>
<body>
    <form id="form1" runat="server">
        <asp:ScriptManager ID="ScriptManager1" runat="server" />
        <telerik:RadWindowManager ID="RadWindowManager1" runat="server">
        </telerik:RadWindowManager>
        <asp:Button ID="AlertButton" runat="server" OnClick="AlertButton_Click" Text="Alert from server" />
        <asp:Button ID="RadAlertButton" runat="server" OnClick="RadAlertButton_Click" Text="RadAlert from server" />
        <input id="RadAlertButtonClient" type="button" value="RadAlert from client" onclick="radalert('Some data from client!');"/>
    </form>
</body>
</html>

Default.aspx.cs:

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class _Default : System.Web.UI.Page
{
    protected void AlertButton_Click(object sender, EventArgs e)
    {
        ScriptManager.RegisterStartupScript(Page, typeof(Page), "AlertScript", "alert('Some data from server!');", true);
    }

    protected void RadAlertButton_Click(object sender, EventArgs e)
    {
        ScriptManager.RegisterStartupScript(Page, typeof(Page), "RadAlertScript", "radalert('Some data from server!');", true);
    }
}

21 Answers, 1 is accepted

answered on 08 Feb 2008, 01:19 PM

Hi Mats,

The controls in the Prometheus suite are built upon the MS AJAX framework and the framework itself creates its controls (including RadWindow Prometheus) in the Sys.Application.add_init() method - you can check this for yourself by examining the HTML dump of a page with RadControls Prometheus included in it (or any other ASP.NET AJAX control). That is why when you call your code when the page is loaded, the RadWindow will still not be fully rendered on the page and you will get the error. To avoid this issue, you can either execute your code with a small timeout or better - to add your code in the Sys.Application load handler as shown below:

    
              protected void RadAlertButton_Click(object sender, EventArgs e)  
        
                {  
        
                    ScriptManager.RegisterStartupScript(Page, typeof(Page), "RadAlertScript", "Sys.Application.add_load(function(){radalert('test');});", true);  
        
                }

Kind regards,
Svetlina
the Telerik team

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answered on 28 Jul 2008, 02:11 PM

Hello guys,

Straight to your questions:

Vishal, I already answered your other thread and I think that it will be best to continue discussing your scenario there.
Blake, I am not quite sure whether you mean a RadWindow or a RadAlert - you talk about RadWindow and your code shows a radalert. That is why I will answer your questions for both of the dialogs.

1. Positioning question:
     - RadWindow - you can specify the position by setting the Top and the Left properties
     - radalert - you cannot reposition the radalert, it is shown at the center of the screen by default because this is the behavior of the standard alert dialog, too.

2. Title question:
    - RadWindow - set the Title property - you can do this in the code-behind.
    - radalert - you can provide the title as an argument in the radalert definition as explained here.

As to your other question, you can set the RadWindow's properties on the server after you have referenced it, e.g:

    
            RadWindow1.Title = "RadWindow1 Custom Title";

or in case you are using RadWindowManager:

    
             RadWindowManager1.Windows[0].Title = "Custom Title";  
        
                    RadWindowManager1.Windows[0].VisibleOnPageLoad = true;

Kind regards,
Svetlina
the Telerik team

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answered on 28 Jul 2008, 02:29 PM

Thank you for the answers to my questions. I was originally talking about the rad alert, but now that I see I cannot change the position of the window I am going to need to use a different control. Let me explain what I am trying to do and maybe you can point me in the right direction

My page currently consists of a splitter with two panes. On one side, there is a menu, and on the other a PDF is displayed based on what is clicked on in the menu. When I use the radalert, the window alert pops up, but I a cannot see half of it because it is behind the PDF. Basically I need a window that will do the following:

- Display a message that is based on server side code (Tell me if a database update is successful). The event is called through AJAX using an RadAjaxPanel
- It needs to be modal.
- I need to be able to set the location where the window opens, so it does not show up behind the pdf.
- I need to be able to open the window on the server-side through AJAX

Thank you,
Blake

answered on 30 Jul 2008, 11:42 AM

Hi B,

In this case I suggest to open the RadWindow from the server by executing a script, added to the ResponseScripts collection of the RadAjaxManager (RadAjaxPanel) you use for the ajax request as shown below:

    
            protected void Button1_Click(object sender, EventArgs e)     
        
            {     
        
                RadAjaxManager1.ResponseScripts.Add("radopen("http://www.google.com", null)");     
        
            }

It depends on you what will be the script you want to execute - showing radalert or RadWindow. I also recommend to examine this KB article.

In case this does not help, please provide a small, sample demo, which is fully working and shows a standard browser alert (or window via window.open) instead of RadWindow. In order to be able to attach files, you should open a new support ticket. Once I receive it, I will modify it in order to use RadWindow instead of standard browser popup.

All the best,
Svetlina
the Telerik team

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answered on 11 Dec 2009, 08:49 AM

hi,

this code is working fine for me without any repeatation

radopen :

protected void Button2_Click(object sender, EventArgs e)
        {
            ScriptManager.RegisterStartupScript(Page, typeof(Page), "RadAlertScript", "Sys.Application.add_load(function(){radopen('http://www.google.com');});", true);

}

radalert:

protected void Button2_Click(object sender, EventArgs e)
        {
            ScriptManager.RegisterStartupScript(Page, typeof(Page), "RadAlertScript", "Sys.Application.add_load(function(){radalert('test alert');});", true);

}

answered on 11 Nov 2010, 03:45 PM

Hello guys,

Alexandre, do you close the current RadWindow before you press the button again? If you do not, it is expected to show another RadWindow and you should modify your script accordingly. If you close the current RadWindow and after that you got more than one RadWindows when the button is clicked, please provide some fully runnable reproduction code because I was not able to reproduce the issue in the sample demo I prepared based on your explanations.

Sunitha, I am not sure why this approach does not work for you but different approach is needed for different scenarios as explained in the earlier provided article. Please, check it out and see what is your exact scenario and use the corresponding approach. In case you need further assistance, please share fully runnable reproduction code and we will do our best to help.

Kind regards,
Svetlina
the Telerik team

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Using radalert as server side &quot;MessageBox&quot;

21 Answers, 1 is accepted

Using radalert as server side "MessageBox"