asp.net - New Expression Syntax issue -

in asp.net 4.0 page, inside itemtemplate in gridview, have applied new expression syntax binding columns

<%#: eval(columnname) %>

the data bound in local machine. after deploying server, framework 4.0 installed receive following error

cs1525: invalid expression term ':'

against above expression. solution regarding ? included in web.config ?

have verified deployed server's application pool running .net 4.0 , not .net 2.0?

the : syntax valid in .net 4.0 , later.

here sample screenshot iis:

enter image description here

note: ignore lines , text, taken question.

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