<%= won't show wanted string on client side

I have this line of markup

<a id="cashout_btn" href="#" data-tooltiptext="<%=this.CashOutTooltip%>" runat="server">

        <span id="cashout_txt" class="cashout_txt" runat="server">        150</span> 

</a>

But on client side I see:

<a href="../Controls/Network开发者_StackOverflow中文版PAU/#" id="networkPauControl_cashoutControl_cashout_btn"  

data-tooltiptext="&lt;%=this.CashOutTooltip%&gt;" 

data-tooltiptype="simpleTip"><span id="networkPauControl_cashoutControl_cashout_txt" class="cashout_txt">
            150</span> </a>

Meaning no string was populated in data-tooltiptext="<%=this.CashOutTooltip%>"

Any idea?

You can't use such evaluations in server controls' markup.

Best solution would be do that in code-behind, for example, during Page.Load event, but instead of giving you a sample of that, I'd argue that using localization would be better for that case.

You can start learning more by following this link:

• http://msdn.microsoft.com/en-us/library/fw69ke6f.aspx

<%= expressions cannot be used as properties, you have to use <%# expressions instead.

Since <%# expressions are evaluated at DataBind() time, if you used that, then you need to call DataBind(); method at PreRenderComplete like..

 protected void Page_PreRenderComplete(object sender, EventArgs e)
 {
  DataBind();
 }

The solution was: a. using <%# instead of <%= b. removing "this" in <%=this.CashOutTooltip%> (Not sure why? Because "this" relates to the page and not the an instance of the class in the code behond ??)