Question : Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control.

If using a datarepeater and the following gives the above error:

<% If Eval("VideoFile").ToString() <> "no video" Then%>

I've also tried

<%# DataBinder.Eval(Container.DataItem, "VideoFile") %>

To no avail

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<%  If DataBinder.Eval(Container.DataItem, "VideoFile") <> "no video" Then%>
This text will be replaced        							
<%  End If%>

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Answer : Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control.

yes I have,
<%#ReplaceField(Eval("Description").ToString())%>
and in the code behind
Protected Function ReplaceField(ByVal stat As String) As String
'YOUR CUSTOM CODE HERE
Return "newValue"
End Function

and if checking for a null or blank record (i.e. don't show image if none there)

<%Response.Write("' ")%>