asp.net databind expression not evaluating

The followi开发者_Go百科ng code:

aspx file:

<div id="challengedIndependence" class="collegeAccentBlock grid_8 push_1" runat="server" clientidmode="Static" style='display:<%# testMethod %>' >

associated aspx.cs file:

  public string testMethod()
    {
        return "none;";
    }

rendered html file:

<div id="challengedIndependence" class="collegeAccentBlock grid_8 push_1" style="display:&lt;%# testMethod %&gt;">
</div>

I am expecting the result to rendder as ...style:"display:none;"... what am I doing wrong.

Not sure if this should be in the same question: I am doing this because I have multiple lines of code to determine whether this div should be displayed. If there is another way of doing this and an explanation as to why it is better I would also accept that answer.

Reference: Inline expressions referenced on MSDN

If you're going to use an inline expression here, it needs to be the entire content of that attribute, like this:

<div id="challengedIndependence" class="collegeAccentBlock grid_8 push_1" runat="server" clientidmode="Static" style='<%# testMethod() %>' >

and then return the entire string you want there. It's just rendering it as part of the string.

Dictate an UI style by code behind looks not right, but anyway try to return whole style string like return "display:none" and bind to style attribute