Methods and Constructors

Question

Now I am learning C # and new to the programming world. I have a book called "Full Link" by Herbert Schildt. This is a good book so far, and I'm in the know about methods and constructors.

I am rather confused about the difference between methods and constructors. Because in the book she has almost the same example. I do not know how to distinguish them. I would appreciate your idea. By the way, I have several definitions here for both, I just wanted to know how to distinguish them.

thanks for the help

Greetings

Answer 1

The constructor only works when creating a new instance of the class. This is the very first method to start an instance; it must be started and executed exactly once.

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public class MyType
{
    private SomeType _myNeeds;

    // constructor
    MyType(SomeType iWillNeedThis)
    {
        _myNeeds = iWillNeedThis;
    }

    // method
    public void MyMethod()
    {
        DoSomethingAbout(_myNeeds);
    }
}

Answer 2

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Answer 4

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public class Foo
{
    // Constructor
    public Foo()
    { }

    public void Bar()
    { }
}

Answer 5

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Public class person()
  {
     public person()
     {
     }
   }

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class Widget //Some Class "Widget"
{
    int _size;
    int _length;
// Declaring a Constructor, observe the Return type is not required

public Widget(int length)
    {
        this._length = length;
    }
// Declaring a Method, Return type is Mandator

    public void SomeMethod(int size)
    {
        this._size = size;
    }
}

//Calling the Constructor and Method

class Program
{
    static void Main()
    {

//Calling the Constructor, Observe that it can be called at the time the Object is created
        Widget newObject = new Widget(124);

//Calling the Method, Observe that the Method needs to be called from the New  Object which has been created. You can not call it the way Constructor is called.

        newObject.SomeMethod(10);I

    }
}

Answer 7

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