One DataSource for multiple controls

Question

I have two ListBox in my winforms application, I assigne a datasource for both of them as follow:

private void MakeMeasurementUnits()
{
    var          


        

Answer 1

The listbox seems to cache the binding source. This is default behavior. If you want to avoid this, the easy way is to create a copy of the list to bind to the second data source:

lbxXunit.DataSource = units;
lbxYunit.DataSource = units.ToList();

This is useful when you have multiple views of the same data and want to synchronize the selection of these items.