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Part 48 - C# Tutorial - Difference between Types and Type Members

In this session we will
1. Understand the difference between Types and Type Members
2. Understand Organising code with regions

In the example below Customer is the Type and private fields(_id, _firstName, _lastName), Properties(Id, FirstName, LastName) and GetFullName() method are type members.

public class Customer
    #region Private Fields
    private int _id;
    private string _firstName;
    private string _lastName;

    #region Properties
    public int Id
        get { return _id; }
        set { _id = value; }
    public string FirstName
        get { return _firstName; }
        set { _firstName = value; }
    public string LastName
        get { return _lastName; }
        set { _lastName = value; }

    #region Methods
    public string GetFullName()
        return this._firstName + " " + this._lastName;

Part 48 - C# Tutorial - Difference between Types and Type Members

So, in general classes, structs, enums, interfaces, delegates are called as types and fields, properties, constructors, methods etc., that normally reside in a type are called as type members.

In C# there are 5 different access modifiers.
1. Private
2. Protected
3. Internal
4. Protected Internal
5. Public

Type members can have all the access modifiers, where as types can have only 2 (internal, public) of the 5 access modifiers

In the next session we will discuss about all the access modifiers in detail.

Customer class makes use of regions. Using regions you can expand and collapse sections of your code either manually, or using visual studio Edit -> Outlining -> Toggle All Outlining

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