We can change the size of an array after creating them. The ReDim statement assigns a completely new array object to the specified array variable. You use ReDim statement to change the number of elements in an array. See Code sample:
Public Class MainClass
Shared Sub Main()
Dim Months(5) As String
Months(0) = “Jan”
Months(1) = “Feb”
Months(2) = “Mar”
Months(3) = “Apr”
Months(4) = “May”
Months(5) = “Jun”
ReDim Preserve Months(8)
Months(6) = “Jul”
Months(7) = “Aug”
Months(8) = “Sep”
For i As Integer = 0 To Months.Length – 1
System.Console.WriteLine(Months(i).ToString())
Next
End Sub
End Class