C# Tutorial for Beginners 19 - Polymorphism in C#

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[davidamour]

Naming things is hard sometimes. Don't name the base class Drawing. That is a verb. Use a noun such as Shape. Also in your loop again don't use a verb (draw) for an object - use a descriptive noun. Finally why is everything called Obj? I see this so much in these tutorials. Call it what it is with a descriptive noun - eg shapes for example. All this leads to much more readable code and readable code is easier to understand, easier to maintain and will contain fewer bugs going forward.

[stannisbarracuda]

man in 11 min i understood everything thanks so much

[AmmarTravelDiaries]

Why you taking array of Parent class ? is it not possible to teach Polymorphism without Array ?

[tryingtocorrect]

"Drawing[] dObj = new Drawing[4];" Is dObj here and array of four Drawing objects or an array of Drawing object *pointers* (or possible an array of Drawing object references)? I have a C++ background, and in this example in C++ it should be an array of pointers this example to work properly. Later on you do: "dObj[0] = new Line();", so are you here copying the address  of the Line object to the dObj[0] pointer? Does "new Line();" return a pointer or an object in C#? are we dealing with pointers, references or objects here?