how to use array in vb.net

Dim aaray1() As String = New String() {"shankar", "mishra"}
ResultListBox1.Items.Add("The First Index of Array is " & aaray(1))
ReDim aaray1(1)
aaray1(0) = "chennai"
aaray1(1) = "Delhi"
ResultListBox1.Items.Add(" Array is " & aaray1(1))


tell me why this is not printing in Delhi