Related Data Binding and ComboBoxes in WPF

I've been noticing a lot of questions on the forums related to Winforms data binding and the ComboBox and I thought I'd post something up here to help people out.  In fact data binding, or what we call "Windows Forms over Data" is a huge, sometimes misunderstood, topic.  Because of this I'm putting together a "how-to" video series on a variety of topics in this area. Two of the videos are dedicated to data binding the ComboBox in a couple very common scenarios:

1. To display information from a lookup table and send the selected value into another table's field.

2. To display a list of parent table's records and use that as a filter to display related child records. For instance, as the user selects a record in the ComboBox, you want to display all the related child records in a grid.

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