Is there a Cache.RemoveAll()? How can I clear / remove the total cache

VB.NET

Dim objItem As DictionaryEntry
For Each objItem In  Cache
   ’Response.Write (objItem.Key.ToString ());
   Cache.Remove(objItem.Key.ToString())
Next  

C#

foreach(DictionaryEntry objItem in Cache) 
{ 
	//Response.Write (objItem.Key.ToString ());
	Cache.Remove(objItem.Key.ToString () ) ;
}