Hi forum

Can you please tell me the exact difference ( conceptual, behavioural, implementation and execution) between these two :

1. Dim x as integer
2. Dim x as New integer

in VB.net both are allowed. I am a little confused about two. In both cases x exhibits similar methods and properties. Why?

Anubhav Kumar

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Anubhav Kumar
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These two declarations are no different. Because integers are simple native types they are implicitly instanciated. If you use more complex objects such as an ArrayList/DataSet, basically anything beyond simple types, then they are not instanciated:

Dim objDS1 As DataSet
Dim objDS2 As New DataSet

Now, objDS1 will be equal to null/Nothing while objDS2 will be a usable instance.

Also, these two behave the same, the first is just a shortcut method:

Dim objDS As New DataSet
Dim objDS As DataSet = New DataSet

-Peter

hi forum

My real confusion lies in the fact that normally native or in built dada types do not need instanciation. But we are doing the same here

Dim x as integer=new integer() 'Although Dim x as integer works fine

Any comments?

Anubhav Kumar