C#.NET 3.5
My date format is as below


FOrmation Date :


Dissolved Date :


 
//Compare these date 

ErrorMessage="Dissolved date must be greater than Formation date" ControlToCompare="txtFormationDate"
ControlToValidate="txtDissolvedDate" Operator="GreaterThanEqual" Type="Date" SetFocusOnError="true" ValidationGroup="BranchGP">

when I enter the date as 15/04/2011 (Formation date) & 17/03/2012 (Dissolve date)

It works Fine on my own desktop But when I run it on Network by publishing website 

then it shows ERROR msg 'Dissolved date must be greater than Formation date'.

Plz help me.
still awaiting for your positive n quick reply