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[Solved] Another: The Controls collection cannot be modified... blocks (i.e. <% ... %>).

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Tommy T asked on 06 Jan 2010, 05:27 PM

I am running asp.net 3.5 and I am trying to add a Telerik Date Picker. I am registering the Telerik.Web.UI. I only have this section of code on the page that is using Telerik (it is being used twice as I'm also wanting to add an end date).

    
                    <telerik:RadDatePicker ID="RDPBeginDate" runat="server"> 
        
                        <Calendar> 
        
                            <SpecialDays> 
        
                                <telerik:RadCalendarDay Repeatable="Today" ItemStyle-CssClass="rcToday" /> 
        
                            </SpecialDays> 
        
                        </Calendar> 
        
                    </telerik:RadDatePicker>

I have tried wrapping it in a RadControlBlock to no avail. Any help is appreciated.

5 Answers, 1 is accepted

answered on 06 Jan 2010, 06:06 PM

I apologize, I meant to say CodeBlock instead of ControlBlock.

I tried them since I kept seeing the same response to no avail:

    
                    <telerik:RadScriptBlock ID="RadScriptBlock1" runat="server"> 
        
                    <telerik:RadDatePicker ID="RDPBeginDate" runat="server">  
        
                        <Calendar>  
        
                            <SpecialDays>  
        
                                <telerik:RadCalendarDay Repeatable="Today" ItemStyle-CssClass="rcToday" />  
        
                            </SpecialDays>  
        
                        </Calendar>  
        
                    </telerik:RadDatePicker> 
        
                    </telerik:RadScriptBlock>

and

    
                    <telerik:RadCodeBlock ID="RadCodeBlock1" runat="server"> 
        
                    <telerik:RadDatePicker ID="RDPBeginDate" runat="server">  
        
                        <Calendar>  
        
                            <SpecialDays>  
        
                                <telerik:RadCalendarDay Repeatable="Today" ItemStyle-CssClass="rcToday" />  
        
                            </SpecialDays>  
        
                        </Calendar>  
        
                    </telerik:RadDatePicker> 
        
                    </telerik:RadCodeBlock>

Produced the same error: The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>).

As for the article you mentioned, this isn't a script and I am not trying to reference a variable within running script. I am simply attempting to add a Date Picker to an area of a webpage.

answered on 07 Jan 2010, 08:21 AM

Hello Tommy T,

Are you saying that you don't have server-side code blocks ( <%= ....... %> ) anywhere on the page? Can you send us a runnable demo, which reproduces the problem? Here is a simple test page, based on your RadDatePicker declaration, which works as expected.

<%@ Page Language="C#" %>

<%@ 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 id="Head1" runat="server">

<meta http-equiv="content-type" content="text/html;charset=utf-8" />

<title>RadControls</title>

</head>

<body>

<form id="form1" runat="server">

<asp:ScriptManager ID="ScriptManager1" runat="server" />

<telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server" Transparency="50" BackColor="Yellow" />

<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server" DefaultLoadingPanelID="RadAjaxLoadingPanel1">

<AjaxSettings>

<telerik:AjaxSetting AjaxControlID="RDPBeginDate">

<UpdatedControls>

<telerik:AjaxUpdatedControl ControlID="RDPBeginDate" />

</UpdatedControls>

</telerik:AjaxSetting>

</AjaxSettings>

</telerik:RadAjaxManager>

<telerik:RadDatePicker ID="RDPBeginDate" runat="server" AutoPostBack="true">

<Calendar>

<SpecialDays>

<telerik:RadCalendarDay Repeatable="Today" ItemStyle-CssClass="rcToday" />

</SpecialDays>

</Calendar>

</telerik:RadDatePicker>

</form>

</body>

</html>

Regards,
Dimo
the Telerik team

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[Solved] Another: The Controls collection cannot be modified... blocks (i.e. &lt;% ... %&gt;).

5 Answers, 1 is accepted

[Solved] Another: The Controls collection cannot be modified... blocks (i.e. <% ... %>).