using <%= %> as HTML element attribute

[Gabriel]

Hello everyone,

I'm trying to use Server snippets incrusted in HTML with no luck. The code is as follows:

<label for="<%= myTextBox.ClientID %>" >Text</label>
<asp:TextBox id="myTextBox" runat="server />

The server throws me the following exception:
The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>).

I know I have to use RadScriptBlock if I want to use it in javascript, but how can I achieve this behavior with Telerik?
I also know that Telerik:RadTextBox contains a label option, but I need it this way because I'm using a CSS template.

in advance, thanks

[Princy]

Hi Gabriel,

I suppose you want to set CSS for label in the RadTextBox. You can override the default Css as shown below.

ASPX:

<telerik:RadTextBox ID="myTextBox" runat="server" Label="Your Label">
</telerik:RadTextBox>

CSS:

<style type="text/css">
 .RadInput_Default .riLabel
  {
    color:Red !important; //Your style
  }
</style>

Please elaborate your scenario if it doesn't helps.

Regards,
Princy.

[Gabriel]

Hello Princy, thank you for the reply.

I don't want to override the CSS.

Look, the problem is I have to create the following structure for my form elements:

<div class="control-group">
    <label for="<%= myTextBox.ClientID %>" class="control-label">LabelText</label>
    <div class="controls">
        <asp:TextBox ID="myTextBox" runat="server" CssClass="input-square">
    </div>
</div>

I can't create this structure with Telerik:RadTextBox, can I?

I think one solution might be to create an user-control, but I don't really understand why Telerik limits so much this incredible feature of asp.

[Princy]

Hi,

Unfortunately I cannot replicate the issue at my end. I was able to show a label with RadTextBox. Attached is the screenshot.
aspx:

<div class="control-group">
    <label for="<%= myTextBox.ClientID %>" class="control-label">LabelText</label>
    <div class="controls">
        <telerik:RadTextBox ID="myTextBox" runat="server" CssClass="input-square"></telerik:RadTextBox>
    </div>
</div>

Regards,
Princy.

[Gabriel]

Nice, now add a RadScriptManager and a RadAjaxManager to the page and see how it behaves.

Thanks.

[Vasil]

Hello Gabriel,

I would like to refer back to your original post. You could use

<asp:Label runat="server" AssociatedControlID="myTextBox" />

This will work even if the myTextBox is RadTextBox, if you are using versions after Q1 2012

Kind regards,
Vasil
the Telerik team

[Gabriel]

OMG!!

This is the first time I see AssociatedControlID property!!!! I didn't know it existed!!!

thank you Vasil.

PS: That sound really noob, I know xD