Public ReadOnly Property Versions As SPListItemVersionCollection
Dim instance As SPListItem Dim value As SPListItemVersionCollection value = instance.Versions
public SPListItemVersionCollection Versions { get; }
SPListItem.Versions[0] //this is current version of the item
SPListItem.Versions[1] //this is previous version of the item
SPListItem.Versions[SPListItem.Versions.Count - 1] //this is first version of the item