IMPORTANT FUNCTION IN ARRAY LIST

Add : Add an Item in an ArrayList

Insert : Insert an Item in a specified position in an ArrayList

Remove : Remove an Item from ArrayList

RemoveAt: remeove an item from a specified position

Sort : Sort Items in an ArrayList

How to add an Item in an ArrayList ?

Syntax : ArrayList.add(Item)

Item : The Item to be add the ArrayList

Dim ItemList As New ArrayList()

ItemList.Add("Item4")

How to Insert an Item in an ArrayList ?

Syntax : ArrayList.insert(index,item)

index : The position of the item in an ArrayList

Item : The Item to be add the ArrayList

ItemList.Insert(3, "item6")

How to remove an item from arrayList ?

Syntax : ArrayList.Remove(item)

Item : The Item to be add the ArrayList

ItemList.Remove("item2")

How to remove an item in a specified position from an ArrayList ?

Syntax : ArrayList.RemoveAt(index)

index : the position of an item to remove from an ArrayList

ItemList.RemoveAt(2)

How to sort ArrayList ?

Syntax : ArrayListSort()

The following VB.NET source code shows some function in ArrayList

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Public Class Form1
    Private Sub Button1_Click(ByVal sender As System.Object, 
 ByVal e As System.EventArgs) Handles Button1.Click
        Dim i As Integer
        Dim ItemList As New ArrayList()
        ItemList.Add("Item4")
        ItemList.Add("Item5")
        ItemList.Add("Item2")
        ItemList.Add("Item1")
        ItemList.Add("Item3")
        MsgBox("Shows Added Items")
        For i = 0 To ItemList.Count - 1
            MsgBox(ItemList.Item(i))
        Next
        'insert an item
        ItemList.Insert(3, "Item6")
        'sort itemms in an arraylist
        ItemList.Sort()
        'remove an item
        ItemList.Remove("Item1")
        'remove item from a specified index
        ItemList.RemoveAt(3)
        MsgBox("Shows final Items the ArrayList")
        For i = 0 To ItemList.Count - 1
            MsgBox(ItemList.Item(i))
        Next
    End Sub
End Class

When you execute this program , at first add five items in the arraylist and displays. Then again one more item inserted in the third position , and then sort all items. Next it remove the item1 and also remove the item in the third position . Finally it shows the existing items.