Hi, In my code behind page I have been trying to replace my normal div content with an error message. (normally the div contains an wizard control amongst other things)  I want this overwriting of the div content to occur if the query string is left blank.

 I tried searching for answers on this, and I got this far....

        Job_ID = Request.QueryString("Job_ID")

        If Job_ID Is DBNull.Value Then
            content.InnerHtml = "Hello World"
        End If

  
"content" is the id of the div. I added runat="server" to the div on the aspx page, ie   <div id="content" runat="server">

But it doesn't seeem to build.  It says there are build errors, but no errors are listed in the error list.  It also seems to be very different syntax to the way I would access asp.net controls in the aspx file through code behind which makes me think I'm going about this the wrong way. Could anyone provide me with the correct method for doing this?  Thanks.

Try this:

    <div id="content" runat="server">
    
    </div>

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        If Request.QueryString("Job_ID") IsNot Nothing Then
            content.InnerHtml = "Hello World"
        End If
    End Sub

You could just use an asp:panel  that will render a div.

Well you and C8 pretty much have the thing correct and without looking at your actual code its difficult to say what might be going wrong,

<div id="content" runat="server"></div>

then..

this.content.InnerHtml="Your text"

in your code behind. Sorry its a mere repeat of what you have already done, but this is how you will set the div's content. I think you may have some other problem. Could you please show the complete code.