ArrayList.IndexOf searches for the specified Object and returns the zero-based index : ArrayList « Data Structure « VB.Net






ArrayList.IndexOf searches for the specified Object and returns the zero-based index

 

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("B")
        myAL.Add("C")
        myAL.Add("D")
        myAL.Add("B")
        myAL.Add("C")
        myAL.Add("D")
        myAL.Add("B")
        myAL.Add("C")
        myAL.Add("D")
        myAL.Add("B")
        myAL.Add("C")
        myAL.Add("D")

        PrintIndexAndValues(myAL)

        Dim myString As [String] = "B"
        Dim myIndex As Integer = myAL.IndexOf(myString)
        Console.WriteLine(myIndex)

        myIndex = myAL.IndexOf(myString, 4)
        Console.WriteLine("The first occurrence of ""{0}"" between index 4 and the end is at index {1}.", myString, myIndex)

    End Sub 'Main

    Public Shared Sub PrintIndexAndValues(ByVal 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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