ArrayList is one of the most flixible data
structure from VB.NET Collections. Array is the collection of values of the same
data type, As ArrayList contains a simple list of values and very easily we can
add , insert , delete , view etc. The ArrayList can be expanded automatically by
built-in code, making a dynamic array. It is very flexible becuse we can add
without any size information. Here, we describe the ArrayList type in the VB.NET
language, which is one of the easiest and more useful data types.
An ArrayList can support multiple readers
concurrently, as long as the collection is not modified. To guarantee the thread
safety of the ArrayList, all operations must be done through the wrapper
returned by the Synchronized method. The Add method on the VB.NET ArrayList
instance type is very commonly used. The Add method appends the object argument
to the very end of the internal ArrayList data structure.
Example of ArrayList.Add
Imports System
Imports
System.Collections
Public Class MainClass
Shared Sub
Main()
Dim A1 As New ArrayList()
Dim A2 As New ArrayList()
Dim j As Integer
For j = 0
To 10
A1.Add(New worker(j + 50))
A2.Add((j * 2))
Next j
For Each
j In A2
Console.Write("{0}
", j.ToString())
Next
Console.WriteLine(ControlChars.Lf)
Dim k As worker
For Each
k In A1
Console.Write("{0}
", k.ToString())
Next k
Console.WriteLine(ControlChars.Lf)
Console.WriteLine("staff{0}",
A1.Capacity)
Console.ReadLine()
End Sub
End Class
Public Class worker
Private WID
As Integer
Public Sub New(ByVal empID
As Integer)
Me.WID = empID
End Sub
Public Overrides Function ToString() As String
Return WID.ToString()
End Function
Public Property
EmpID() As Integer
Get
Return WID
End Get
Set(ByVal
Value As Integer)
WID = Value
End Set
End Property
End Class
Output
