Abstract Classes in C#.NET | C#.NET Tutorial | Mr. Bangar Raju



Introduction to .NET | C#.NET Tutorial | Mr. Bangar Raju

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47 thoughts on “Abstract Classes in C#.NET | C#.NET Tutorial | Mr. Bangar Raju

  1. Sir, U gave a useful explaination about abstract classes and methods, but we can't understand what is the use of abstraction ?..

  2. Hi, I am getting error "Program has more than one entry point defined" when running code in Visual Studio 2017.
    ———Parent code:————
    using System;

    using System.Collections.Generic;

    using System.Linq;

    using System.Text;

    using System.Threading.Tasks;

    namespace testapp1.tests

    {

    abstract class AbsParent

    {

    public void Add(int x, int y)

    {

    Console.WriteLine(x + y);

    }

    public void Sub(int x,int y)

    {

    Console.WriteLine(x – y);

    }

    public abstract void Mul(int x, int y);

    public abstract void Div(int x, int y);

    }

    }

    ————Child class:——————
    using System;

    using System.Collections.Generic;

    using System.Linq;

    using System.Text;

    using System.Threading.Tasks;

    namespace testapp1.tests

    {

    class AbsChild : AbsParent

    {

    public override void Mul(int x, int y)

    {

    Console.WriteLine(x * y);

    }

    public override void Div(int x, int y)

    {

    Console.WriteLine(x / y);

    }

    public static void Main(String[] args)

    {

    AbsChild c = new AbsChild();

    c.Add(1, 2);

    c.Sub(2, 1);

    c.Mul(1, 2);

    Console.ReadKey();

    }

    }

    }

    May be the way it is explained in the video, is outdated.

  3. Your clarification is great & will be better if you create a series of videos for a complete project , to demonstrating the use of most objects of C#.
    What do you think ?

  4. Sir I understand this video . This program is inside the class only.but I want to know how abstract is working using web forms.can u share the practical concept using web form.

  5. Very Nice Video.Sir please also make available each note pad which you write while explaining your tutorial.

  6. Sir hats off to you. After this tut I am your new Fan sir. I wished my graduation teacher could have had the wisdom you hav sir. Now I know the answer to that tricky question. Thank you raju sir 👼

  7. i was one of your students in Naresh institute sir , and still what you have taught me in your lectures in my mind i really appreciate you sir thanks a lot and you are the best, and also thanks for the perfect institute Naresh institute

  8. public void add(int a, int b)
    {
    Console.WriteLine(a + b);
    }
    hello sir, how is it not purley called class members .

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