Answer Posted / sanjeev

obj=null
when we use obj=null then this object has existence in
memory with no any value.

obj.dispose()
when we use obj.dispose() then the clr release the memory
and there are no any existence of that object into the
memory. so it will be better to use obj.dispose()

Note:- By default it is automatically disposed by the clr
when there are no any references in the left

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