title: C#: Get a list of customers and share it on TWO Views
body: <p>I have a list of customers shown at a top menu where every customername is a menuitem.
  Now I want to have the same (same = I do not want to reload my data from database ) customers in another menu.</p>
  
  <p>Both menus are in 2 different UserControls. 
  In every UserControl you can do stuff on that customer-menu.
  How would you design both menu`s/UserControls/Presenter to get the customerList only one time from database? </p>
  
  <p>I am using winforms MVP pattern.</p>