i have a listbox and i want to insert the selected item in my textbox.. but when i click the listbox.. i recieve an error.. please help me.. this is my code..

VB Code:
  1. Private Sub ListBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ListBox1.SelectedIndexChanged
  2.         Label1.Text = ListBox1.Items(ListBox1.SelectedItem.Text).Text
  3.     End Sub