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On studying how to use MVVM pattern in WPF I found out that the List View or List Box control doesn’t support ICommand interface and therefore I can not bind a command to a List View.

After searching on Internet I saw that man can use Prism extensions framework WPF to add custom command to our List View control.

This approach also coincides with how Windows UI operate, where you specify the region that needs to be redrawn and then you send a message to the message pump for that control to paint itself.

So, I expected something similar (if not exactly the same) to also be present in WPF; much to my surprise, there is no equivalent.

Add method - overriding to String() seems to be the only way. Display = "New Display Value" The underlying object updates properly.

Setting Datasource may be a different story.) When I update the Display value of the underlying object, the associated List Box entry does not update, nor have any of my attempts to refresh the list worked. But the List Box continues to show "OLD Display Value" in the control!

I have overridden the To String method to display the Display value.

In my past coding with MFC and Win Forms, it's fairly easy enough, you just invalidate and do an update (Invalidate / Update Window in MFC or Invalidate / Update in Win Forms).This post will go through the differences, and how they are used, and also do a little review on databinding in WPF.To set this up, let's define Category objects and Product objects like this: Category--ID--Category Name--Products (An IList)Product--ID--Product Name--Category Parent (A Category Object)In the detail form for the Product, you want to have a Combo Box that has as its Items Source the list of Categories.The code snippet below also show some C# specific techniques, namely: anonymous delegates and extension methods.I have a List Box built of a simple custom object for the List Items used to be able to hold a Data Value, and a Display Value, with accessors for each.




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