Improve efficiency with new vb.net enumeration

When you also use for ... Each loop or a for 1 to Count loop to process the collection, VB. NET has added a new technology, IEnumerator interface.

The IEnumerator interface supports two methods and one feature. The MoveNext method can move one record at a time in the collection. The Reset method enables the enumerator to be reset to the start of the collection. The current attribute can return the present record from the collection.

The following procedure shows the possible methods for these three kinds of calculation sets.

Dim testcollection as New Collection ()
Dim Collectionitem as String
Dim Loopcounter as Integer
Dim Enumcollection as IEnumerator

With Testcollection
. ADD ("1")
. ADD ("2")
. ADD ("3")
End With

For each collectionitem in Testcollection
Console.Out.WriteLine (Collectionitem)
Next

For loopcounter = 1 to Testcollection.count
Console.Out.WriteLine (Testcollection.item (Loopcounter))
Next

Enumcollection = Testcollection.getenumerator ()

Do While Enumcollection.movenext
Console.Out.WriteLine (enumcollection.current)
Loop

IEnumerator bring you for ... The count function provided by each technology, plus new features to make the loop reset and start from the starting position.