在 FormView 中找不到控件？

Question

I need find this <a> tag resided in a FormView control, I need to remove this a tag depending on the condition but I can't find it using FormView.FindControl method

<asp:UpdatePanel ID="upDiscipline" runat="server">
   <ContentTemplate>
        <asp:FormView ID="fvMediaIntro" runat="server">
           <ItemTemplate>           
                  <div class="clipControls">
                     <a runat="server" id="iNeedToFindThis" href="#">here</a>
                  </div>
           </ItemTemplate>
   </ContentTemplate>
</asp:UpdatePanel>

I tried fvMediaIntro.FindControl() and fvMediaIntro.Row.FindControl() , neither worked. Any idea please??

Answer 1

FindControl will work only after those controls are created ie when data is bound to the FormView . So you need to use appropriate event on FormView such ItemCreated or DataBound . For example,

protected void fvMediaIntro_ItemCreated(Object sender, EventArgs e)
{
   var control = fvMediaIntro.Row.FindControl("iNeedToFindThis") as HtmlAnchor;
}

Assuming, you are binding in page_load or using mark-up, you can also use prerender event of parent page/control safely to do FindControl .