Eric after dark questions

• How to use code-behind to create StackPanel -> Border -> Background
• Need help getting control of my computer's main output Speaker
• DataGrid -- AlternatingRowBackground color interfering with "IsMouseOver" color
• How to make a custom button display a menu
• Set focus on TextBox in UserControl
• Why don't MenuItems work with DynamicResource?
• How to call functions in a main view model from other view models?

Eric after dark answers