null value

C

CreativeMind

hi all,
I updated my application from VS2003(.NET framework 1.1) to
VS2008(.NET framework 3.5).
My form uses a dropdownlist cboLocation. In 1.1 there is no error
accessing that form. but when i use 3.5, i get error of 'object
required'. when i break and quick-watch the value of
document.getElementById("cboLocation") , it shows 'null'. btw, there
is a value in dropdownlist. what should i change??
 

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