Exception handling for itemid

[MsN-12]

the problem is when some one put negative or zero id for itemID, the exception throws and its not handled.
i think for security reasons, input id sanitization is needed.

[ks1990cn]

How this makes this code vulnerable or less secure? Is this case even possible from UI, I tried and unable to replicate.

I think, just you are trying outside the box case to hit directly with invalid data & this code is already in try catch block.