&nbsp;<BR>I populate my listbox like in this article: http://www.4guysfromrolla.com/webtech/071101-1.shtml<BR><BR>When i select a item in the listbox i use: OnSelectedIndexChanged="My_function"<BR><BR>i want to set a textbox(tbRutt.text) the value of the selectedItem in my listbox but i get this error:<BR><BR>"System.NullReferenceException: Object reference not set to an instance of an object"<BR><BR>Sub My_function(obj as object, e as eventargs)<BR><BR>tbRutt.Text = lbRutt.SelectedItem.Value<BR><BR>End Sub<BR><BR>Can anyone help me with this one??<BR><BR>/Fredrik