asp.net and datalist

[Per W.]

Hi, how can i read the value in a item in a datalist under a update/edit
command? Under the datalist_itemdatabound i can use this

Protected Sub DataList2_ItemDataBound(ByVal sender As Object, ByVal e As
System.Web.UI.WebControls.DataListItemEventArgs) Handles
DataList2.ItemDataBound
Dim Prodnr As TextBox = CType(e.Item.FindControl("TD_Prodnr"), TextBox)
label1.text = Prodnr
end sub
But on datalist_updatecommand

Protected Sub DataList2_UpdateCommand(ByVal source As Object, ByVal e As
System.Web.UI.WebControls.DataListCommandEventArgs ) Handles
DataList2.UpdateCommand
Dim Prodnr As TextBox = CType(e.Item.FindControl("TD_Prodnr"), TextBox)
label1.text = Prodnr
end sub

This gives an error.
/Per W.