VB.NET tutorial-count elements

VB.NET OOP example

Count elements

Step 3: Count elements of the circularly linked list

To count all elements of the circularly linked list, we will need a loop to traverse through the circularly linked list. We will let a link (i) of ListElem type to point to the pfirst then move the link to its next element and increase the number of item(t) one at a time by using a while loop until the end of the circularly linked list is reached.

'count items in the Circulary Linked List
Public Overrides Function countitem() As Integer
   Dim i As ListNode
   Dim t As Integer = 0
    If (Not IsNothing(pfirst)) Then
         i = pfirst.nextlk
         t = 1
        While Not Object.Equals(i, pfirst)
            t = t + 1
            i = i.nextlk

        End While

    End If
  Catch Ex As Exception

  End Try

 Return t

End Function


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