How to Effectively Bind a WPF ComboBox to a Custom List?

WPF ComboBox Binding to Custom Lists: A Comprehensive Guide

Binding custom lists to WPF ComboBoxes can be tricky. This guide outlines key considerations for successful binding:

1. DataContext Setup:

Ensure your DataContext is correctly set to your ConnectionViewModel instance. This provides the binding context for elements within the DataTemplate.

2. Accurate Binding Paths:

Double-check that DisplayMemberPath and SelectedValuePath accurately reflect the property names within your PhoneBookEntry class.

3. Understanding Implicit DataContext Inheritance:

Remember that items bound to a nested DataContext inherit that context. The PhoneBookEntry object automatically becomes the DataContext for its children.

4. Optimizing with CollectionView:

Direct use of CollectionView might trigger warnings. Consider using a derived class for better performance and fewer bugs.

5. Exploring ReadOnlyCollection:

If CollectionView causes problems, try using a ReadOnlyCollection for the PhonebookEntries property. This often resolves SelectedValue binding issues.

6. DisplayMemberPath and ToString(): A Flexible Approach:

In some cases, use DisplayMemberPath solely for the displayed item, while relying on the ToString() method to populate the dropdown list's content. This offers a more adaptable solution.

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