Are extension methods good practice?
Adding extension methods to any type is a great way to improve productivity and simplify code. You should do this wherever it feels beneficial to you, without worrying about any of these details.
When would you not use an extension method?
Extension methods cannot be used to override existing methods. An extension method with the same name and signature as an instance method will not be called. The concept of extension methods cannot be applied to fields, properties or events.
Can extension methods extend non static classes?
Extension method are to extend the class, not give you full control over the innards of it. @Pete Static Functions don’t require an instance of a non-static class to exist.
How to safely fire an event in C #?
This method specifically raises events, and so does not need changing.”)] public static void Fire (this EventHandler me, T args) where T: EventArgs { me.Fire (null, args); } } The two top methods are used on instance events, and the two bottom methods on static events, which specifically need to pass a null value for sender.
When do you need to use an extension method?
In general, we recommend that you implement extension methods sparingly and only when you have to. Whenever possible, client code that must extend an existing type should do so by creating a new type derived from the existing type. For more information, see Inheritance.
Do you invoke extension method with instance method syntax?
In your code you invoke the extension method with instance method syntax. However, the intermediate language (IL) generated by the compiler translates your code into a call on the static method. Therefore, the principle of encapsulation is not really being violated.
Can a static method call an extension method?
The intermediate language (IL) generated by the compiler translates your code into a call on the static method. The principle of encapsulation is not really being violated. Extension methods cannot access private variables in the type they are extending. For more information, see How to implement and call a custom extension method.
https://www.youtube.com/watch?v=C_1DzspLy4Y