I encountered <% # DataBinder.eval (ContaNdataItem, "xxxx")%> Old, it is not possible to get the dynamic worthwise problem.
Later, I found that it was a format problem, but also reflected that I didn't understand this method.
Some fields in a long string is a dynamic is time, it should be used in the following format:
<% # "xxxxxxxxxxx" DataBinder.eval (ContaXX ")%>
It is still necessary to further understand DataBinder.eval (Container.DataItem, "XXXX").
Find information first.
