Everything in C# is associated with classes and objects, along with its attributes and methods. For example: in real life, a car is an object. The car has attributes, such as weight and color, and methods, such as drive and brake. A Class is like an object constructor, or a "blueprint" for creating objects.

As we already discussed, in object-oriented programming, a Class is a template or blueprint for creating Objects, and every Object in C# must belong to a Class. Please have a look at the following diagram to understand the difference between them.

Jan 11, 2013 · When building an object model that map a classes to database tables, how do you specify the relationship to other entities ? Example : public int CategoryId { get; set; } public string Name { get; set; } public List<Product> Products { get; set; } //for navigation only. public int ProductId { get; set; } public string Name { get; set; }

Jun 28, 2010 · Externalize the relationship from both classes and manage it in a separate object (often called a data context in ORM). When Product wants to return its manufacturer it asks the DataContext. When the Manufacturer want to return a list of Products it does the same.

Jan 15, 2025 · A class is a user-defined blueprint or prototype from which objects are created. Basically, a class combines the fields and methods(member functions which define actions) into a single unit. In C#, classes support polymorphism, and inheritance and also provide the concept of derived classes and base classes. Declaration of Class in C#

Jun 21, 2024 · Object oriented programming generally support 4 types of relationships that are: inheritance, association, composition, and aggregation. All these relationships are based on "is a" relationship, "has-a" relationship, and "part-of" relationship. In this article, we will understand all these relationships.

Nov 21, 2022 · There are four types of relationships in object-oriented programming based on how a class interacts with another class: association, inheritance, composition, and aggregation. All these types...

In C#, classes support polymorphism, the inheritance that provides derived classes and base classes, abstraction, and encapsulation. What is an Object? An object is an instance of the class and represents a real-life entity.

C# Objects. An object is an instance of a class. Suppose, we have a class Dog. Bulldog, German Shepherd, Pug are objects of the class. Creating an Object of a class. In C#, here's how we create an object of the class. ClassName obj = new ClassName(); Here, we have used the new keyword to create an object of the class

Aug 7, 2024 · Object relationships define how different classes interact in an application. Collaboration (uses-a), Aggregation (has-a), and Inheritance (is-a) are key types. For instance, Customer and Order use aggregation, while Order and OrderItem show composition.