How Do I Bind Multiple sources to ListView?

I would suggest using an item view model as a wrapper for the objects that you wish to display. The objects could implement an interface that defines a method to display the data. Then bind a property in the view model to the items display in the view. This property would call the model’s display method in its getter. Something like.

public   interface IDisplayItem
    {
        string GetDisplayString();
        ..........................
    }

  public  class ItemViewModel
  {
      private readonly IDisplayItem item;
      public ItemViewModel(IDisplayItem obj)
      {
          item = obj;
      }

      public string ItemDisplay
      {
          get
          {
              return item.GetDisplayString();
          }
      }
     ....................................
    }
}

You can then change the items collection as needed without changing the bindings in the view.