On DataBinding Occouring, When used an extention function ( it's on module_xx.bas ) On an ASPX Page throwin error ;
System.MissingMemberException: Public member 'SomeExtension' on type 'DBNull' not found.
<aspx:checbox checked= '<%# eval("field_name").SomeExtension()  %>'
its working on code window, but aspx designer page not working
<%@ import "...." is not working
what is solution ?

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