listbox - Get Type from a list element c# -

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I have a C # list box, which is full of elements of class "human", every element belongs to a class Which was derived from human like "Old", "Young" I want to know whether the selected element is old in the list box

thanks in advance

You can use it: 

  var query = myListBox.Items.Cast & lt; Human & gt; (). Select (H = & gt; new {ISLld = H is old, isang = h is young, human = H});   
  Edit :  "I want to know whether the selected element is in the list box old"   
 You do not need LINQ query again:  
  human human = (human) myListBox.SelectedItem; Bool isOld = Human is old;

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