Create a fixed-size wrapper around an ArrayList.

   

Imports System
Imports System.Collections
Imports Microsoft.VisualBasic

Public Class SamplesArrayList    
    Public Shared Sub Main()
        Dim myAL As New ArrayList()
        myAL.Add("The")
        myAL.Add("quick")
        myAL.Add("brown")
        myAL.Add("fox")

        Dim myFixedSizeAL As ArrayList = ArrayList.FixedSize(myAL)

        Dim msg As String
        If myAL.IsFixedSize Then
            msg = "has a fixed size"
        Else
            msg = "does not have a fixed size"
        End If

        PrintValues(myAL, " "c)
        PrintValues(myFixedSizeAL, " "c)

        myFixedSizeAL.Sort()

        PrintValues(myAL, " "c)
        PrintValues(myFixedSizeAL, " "c)

        myFixedSizeAL.Reverse()

        PrintValues(myAL, " "c)
        PrintValues(myFixedSizeAL, " "c)

        myAL.Add("AddMe")

        PrintValues(myAL, " "c)
        PrintValues(myFixedSizeAL, " "c)

        Try
            myFixedSizeAL.Add("AddMe2")
        Catch myException As Exception
            Console.WriteLine("Exception: " + myException.ToString())
        End Try
        Try
            myFixedSizeAL.Insert(3, "InsertMe")
        Catch myException As Exception
            Console.WriteLine("Exception: " + myException.ToString())
        End Try
    End Sub 'Main

    Public Shared Sub PrintValues(myList As IEnumerable, mySeparator As Char)
        Dim obj As [Object]
        For Each obj In  myList
            Console.Write("{0}{1}", mySeparator, obj)
        Next obj
        Console.WriteLine()
    End Sub 'PrintValues

End Class

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Create a fixed-size wrapper around an ArrayList. : List « Data Structure « VB.Net

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