Question

I have a problem when I use user control to get div tag from aspx page that contain my user control.
I have a div in aspx page: <div id="divMask" class="divMask" runat="server"></div>
and in my user control I want get div ID to add attribute “onclick” but I can’t get it.

My aspx page:

<div id="dvConfirmAcc" runat="server" style="display: none; position: absolute; z-index: 2000; top: 155px; left: 400px;">
      <uc1:ConfirmAccount ID="ucConfirmAccount" runat="server" />
</div>
<div id="divMask" class="divMask" runat="server"></div>

In my user control ucConfirmAccount:

protected void Page_Load(object sender, EventArgs e)
{
    string url =  "some url";
    [I want get divMask at here].Attributes.Add("onclick", "closeMessage('" + url + "')");
}

Please help me.

Answer 1

You can’t access div defined in Page directly from UserControl, instead you have to use Page.FindControl method

    protected void Page_Load(object sender, EventArgs e)
    {
        System.Web.UI.Control divMask = (System.Web.UI.Control)this.Page.FindControl("divMask");
        if (divMask is System.Web.UI.HtmlControls.HtmlGenericControl)
        {
            System.Web.UI.HtmlControls.HtmlGenericControl htmlCtrl = (System.Web.UI.HtmlControls.HtmlGenericControl)divMask;            
            htmlCtrl.Attributes[..] = "...";
        }
    }