ArrayList.LastIndexOf searches for Object and returns the zero-based index of the last occurrence : ArrayList « Data Structure « VB.Net






ArrayList.LastIndexOf searches for Object and returns the zero-based index of the last occurrence

 

Imports System
Imports System.Collections
Imports Microsoft.VisualBasic

Public Class SamplesArrayList
   Public Shared Sub Main()
      Dim myAL As New ArrayList()
      myAL.Add("A")
      myAL.Add("B")
      myAL.Add("C")
      myAL.Add("D")
      myAL.Add("E")
      myAL.Add("C")
      myAL.Add("D")
      myAL.Add("E")
      myAL.Add("C")
      myAL.Add("D")
      myAL.Add("E")

      PrintIndexAndValues(myAL)

      Dim myString As [String] = "C"
      Dim myIndex As Integer = myAL.LastIndexOf(myString)
      Console.WriteLine("The last occurrence of ""{0}"" is at index {1}.", myString, myIndex)

      myIndex = myAL.LastIndexOf(myString, 8)
      Console.WriteLine("The last occurrence of ""{0}"" between the start and index 8 is at index {1}.", myString, myIndex)

      myIndex = myAL.LastIndexOf(myString, 10, 6)
      Console.WriteLine("The last occurrence of ""{0}"" between index 10 and index 5 is at index {1}.", myString, myIndex)
   End Sub
   Public Shared Sub PrintIndexAndValues(myList As IEnumerable)
      Dim i as Integer
      Dim obj As [Object]
      For Each obj In  myList
         Console.WriteLine("   [{0}]:    {1}", i, obj)
         i = i + 1
      Next obj
      Console.WriteLine()
   End Sub

End Class

   
  








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