Pass a dictionary of lists to a DataList control

Hi, I'm trying to move to a DataList control of a dictionary list

> " lc="Dictionary>" closure_uid_26zorg="99" mce_style="BACKGROUND-COLOR: #fff">Dictionary <string, List <string>>

where should I insert the key and the list nell'HeaderTemplate nell'itemTemplate, but I do not know how.
 
I tried to create the ItemDataBound event:

protected void dldettaglianimali_ItemDataBound (object sender, DataListItemEventArgs e) ( string intValue = (string) ((KeyValuePair <string, List <string>>) e.Item.DataItem). Key; List <string> stringValue = ...