Use ArrayList to store objects : ArrayList « Collections « VB.Net Tutorial

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VB.Net Tutorial » Collections » ArrayList 
8.11.3.Use ArrayList to store objects
Option Strict On
 Imports System
 Imports System.Collections
 
 Public Class Employee
     Private myEmpID As Integer

     Public Sub New(ByVal empID As Integer)
         Me.myEmpID = empID
     End Sub 'New

     Public Overrides Function ToString( ) As String
         Return myEmpID.ToString( )
     End Function 'ToString

     Public Property EmpID( ) As Integer
         Get
             Return myEmpID
         End Get
         Set(ByVal Value As Integer)
             myEmpID = Value
         End Set
     End Property
 End Class 'Employee

 Class Tester
     Shared Sub Main( )
         Dim empArray As New ArrayList( )
         Dim intArray As New ArrayList( )

         Dim As Integer
         For i = To 4
             empArray.Add(New Employee(i + 100))
             intArray.Add((i * 5))
         Next i
         For Each i In intArray
             Console.Write("{0} ", i.ToString( ))
         Next i

         Console.WriteLine(ControlChars.Lf)
         Dim As Employee
         For Each e In empArray
             Console.Write("{0} ", e.ToString( ))
         Next e

         Console.WriteLine(ControlChars.Lf)
         Console.WriteLine("empArray.Capacity: {0}", empArray.Capacity)
     End Sub
 End Class
0 5 10 15 20

100 101 102 103 104

empArray.Capacity: 8
8.11.ArrayList
8.11.1.Add user defined object to ArrayList
8.11.2.Add different data types to ArrayList
8.11.3.Use ArrayList to store objects
8.11.4.Use For Each to loop through the ArrayList
8.11.5.Convert ArrayList to array
8.11.6.Use DirectCast to convert ArrayList to array
8.11.7.Use ArrayList.Contains to check if a object already exists
8.11.8.Remove element in an ArrayList by index
8.11.9.Sort the values in ArrayList using the default comparer and a custom comparer that reverses the sort order.
8.11.10.Determine the index of the first occurrence of a specified element.
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