Check Object type in List of Objects

Question

Got a WPF Form with a StackPanel containing Expanders with StackPanels in it.

Answer 1

Not many questions answer this part of the question. "Now i must know if the list contains an object of type stackpanel." Which can be achieved through the following:

if (tmpList.Any(x=>x.IsTypeOf(StackPanel)))
{
     //returns true if there are any stack panels in the list 
}