what are the c# concepts like oops, delegates, static class etc? wpf concepts like binding, singleton pattern, commands etc.,? XAML realted questions What is Resources in Wpf? What are types of Binding? What is difference between on-way binding, Two-way binding?

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Explanation of C# and WPF concepts and XAML related questions.

C# concepts include OOPs, delegates, and static classes.
WPF concepts include binding, singleton pattern, and commands.
XAML related questions include resources, types of binding, and one-way vs two-way binding.
Resources in WPF are objects that can be shared and reused throughout an application.
Types of binding in WPF include one-way, two-way, and one-time binding.
One-way binding updates the target property when the source property changes, while two-way binding updates both the source and target properties.
Delegates in C# are used to define and pass methods as parameters.
Static classes in C# cannot be instantiated and are used to provide utility functions.
Singleton pattern in WPF is used to ensure that only one instance of a class is created.
Commands in WPF are used to bind user actions to methods in the ViewModel.