What is the benefit of using int16? instead of int16 in a .net variable declaration? -

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possible duplicate:
c# - basic question: '?' ?

what benefit of using int16? instead of using int16 in .net variable declaration ?

dim int16? dim int16

question mark indicates nullable types: http://msdn.microsoft.com/en-us/library/1t3y8s4s%28v=vs.100%29.aspx


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