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()
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Answer 1

Yes, this is normal behaviour. It happens because the ListView control uses a BindingSource object to track the currently selected item. (A List has no way to track a selected item without a BindingSource.)

By default, a DataSource in a WinForms control uses a BindingSource created for it by the WinForms system itself.

You can read more about the BindingSource at: http://msdn.microsoft.com/en-us/library/system.windows.forms.bindingsource.aspx

There is an article here which might help too: http://blogs.msdn.com/b/bethmassi/archive/2007/09/19/binding-multiple-comboboxes-to-the-same-datasource.aspx