Hello,
Your transformation seems to by ok and should be able to successfully use following code:
<%# IfEmpty(Eval("FullName"), Eval("FirstName")+" "+Eval("LastName"), Eval("FullName")) %>
If this code doesn't return appropriate
FullName, then please check the
Selected columns property of the
User Viewer web part. You can also ensure your self and you can try to render only database returned value by this code:
FullName: <%# Eval("FullName") %><br/>
FirstName: <%# Eval("FirstName") %><br/>
LastName: <%# Eval("LastName") %>
Best regards,
Jan Hermann