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Using RadAjaxManagerProxy on content page with multiple ContentPlaceHolders.

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Ajax

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Jim asked on 18 Aug 2008, 09:23 PM

This is purely my lack of understanding, but I everything I have read so far has not really clicked yet, so I thought I would just come out and ask. As a simplified example I have a master page with a RadAjaxManager control and two ContentPlaceHolder area declared. I have a content page that defines content for the two ContentPlaceHolders like so.

    
            <asp:Content ID="Content4" ContentPlaceHolderID="ContentPlaceHolderMain" Runat="Server"> 
        
                <telerik:RadAjaxManagerProxy ID="RadAjaxManagerProxy1" runat="server"> 
        
                </telerik:RadAjaxManagerProxy> 
        
                <asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" /> 
        
            </asp:Content> 
        
            <asp:Content ID="content5" ContentPlaceHolderID="ContentPlaceHolderRight" runat="server"> 
        
                <asp:TextBox ID="TextBox1" runat="server" Text="0"></asp:TextBox>     
        
            </asp:Content>

and a very simple iterate algorithm on click

    
             protected void Page_Load(object sender, EventArgs e) 
        
                { 
        
                    this.RadAjaxManagerProxy1.AjaxSettings.AddAjaxSetting(Button1, TextBox1, null); 
        
                } 
        
                protected void Button1_Click(object sender, EventArgs e) 
        
                { 
        
                    this.TextBox1.Text = (int.Parse(this.TextBox1.Text) + 1).ToString(); 
        
                }

If I comment out the Page_Load contents. the iterator works as expected with full page post backs. However, with the AddAjaxSetting() method being called I always receive the exception Object reference not set to an instance of an object. on that line. Button1 has a non null value, TextBox1 has a non null value, and RadAjaxManagerProxy1 has a non null value. What is the piece I am missing here?

Thanks for your time.

Using RadAjaxManagerProxy on content page with multiple ContentPlaceHolders.

4 Answers, 1 is accepted