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Introduction to Design Pattern in C#

Web development, programming languages, Software testing & others

Understanding Design Pattern in C#

Design patterns are nothing more than the acknowledged, formal way of solving common coding problems. The design patterns help the user to recognize the basic script as the application agents that support to decode issues. The design patterns focus not only on the common programming basics (data types, interfaces, switch statements, for-loops) but also it helps in acknowledging and incorporating useful patterns.

Before the GOF pattern came into being, the additional patterns exist and came from a variety of sources. These pattern designs focus on a specific problem domain like parallel processing. Also, some of the patterns focused on building a specific type of software application such as web blogs, video games, and database interactivity. Other design patterns relied on building a secure system or solving other higher-level architectural problems.

The design patterns provide a given platform and programming language that supports the user with shortcuts which helps the developers to implement the given pattern more easily. For example; The Java developers have aiding platform and workspace which help them to blend the patterns easily.

How does Design Pattern in C# make Working so Easy?

Design Pattern in C# specializes in developing great artwork by saving time and effort. The best thing about design patterns is that they are agnostic in nature.

Most design patterns are not tied to a specific language. These design patterns can be applied in the various framework such as .NET, Java 2 and coding languages like Delphi, C++, C#, etc. These design patterns are readymade solutions to the problems of developers and once the behavior of pattern is learned, developers can add material to the structure using language and platform with respect to their needs and choice.

The nature of work and application defines the type of design pattern. The classic longhand approach or language-specific shortcuts help the developers to execute the pattern in the coding of applications and programs.

Top Design Pattern in C# Companies

Some of the top companies that use design pattern in C# are as follows:





Corel Inc.

CA Technologies


Various Subsets of Design Pattern in C#

Design patterns are just easy ways of reusing object-oriented code between projects and between programmers.

The GoF book defines 23 classic patterns, which are grouped into three broad categories:

Various Patterns Meaning in Life Classic Patterns of this Category

Structural Structural patterns work on the classification of classes and objects and developing updated tools and functions. It consists of Bridge, Adapter, Decorator, Composite, Proxy, Flyweight, Façade.

Creational They help in giving flexibility in deciding which objects need to be created for a given topic. Also, these help to instantiate objects into memory. Abstract Factory, Builder, Factory Method, Prototype, Singleton.

Behavioral As the name suggests, these patterns are based on communication between objects and how the flow is operated in a dynamic program. Chain of Responsibility, Command, Interpreter, Iterator, Mediator, Memento, Observer, State, Strategy, Temple Method, Visitor.

Structural Design Patterns

Following are some structural design patterns:

Adapter Pattern: To simplify programming, the Adapter pattern helps the developers to follow one class to the structure of another.

Bridge Pattern: It helps to segregate the user interface from execution.

Composite Pattern: It helps the user to create new objects by the framework of preexisting objects.

Decorator Pattern: It helps to expand the performance of an object effectively.

Facade Pattern: With the help of this pattern, the developers can recognize the set of objects with a single class.

Flyweight Pattern: These patterns help to maintain the usage of memory and store the state of shared objects superficially.

Twin: It allows the creation of two or more models in programming scripts that don’t support the twin function.

Creational Design Patterns

Following are some creational design patterns:

Abstract Factory Pattern: It contributes a platform for developing groups of related objects without disclosing their existing classes.

Builder Pattern: It helps in separating the making of complicated objects from its presentations. It helps to create other presentations with the same objects.

Factory Method Pattern: It helps in defining the interface for developing a single object.

Prototype Pattern: It is based on creating new objects from the structure of an existing object and helps in increasing the performance.

Singleton Pattern: It confirms a class has only one existence.

Multiton: It confirms a class has only named existences.

Behavioral Design Patterns

Following are some behavioral design patterns:

Chain of Responsibility Pattern: It chains the receiving objects and transfers the request until the objects control it.

Command Pattern: It sends the request as an object. It supports the usage of non-doable operations.

Interpreter Pattern: It defines a representation with an interpreter that uses the presentation to tell sentences in the language

Iterator Pattern: It allows access to the elements of an aggregate object.

Mediator Pattern: It shows how a set of objects interact and communicate.

Memento Pattern: It allows to store and capture objects internal properties that help to restore the state of the object later.

Observer Pattern: It defines the dependency between objects where one change results in the modification of all its dependents.

Null Object: It helps in avoiding null preferences by supporting with a default object.

Visitor: It works on operations to be performed on the different parts of an object model.

What can you do with Design Pattern in C#?

C# has all the features of any other powerful and modern language. The syntax of C# is very similar and familiar to that of the Java, C or C++ languages. C# is a case sensitive language dissimilar to that of Visual Basic. Every statement in C# is completed and terminated with a semicolon.

The syntax of C# is:

y= m*x + b;

Since C# is a case sensitive language dissimilar to Visual Basic it is written in lower case.

Working with Design Pattern in C#

Working with Design Pattern in C# is easy and it speeds up the process of solving problems related to applications.

The major patterns of C# are as follows:

Singleton: This is the most common and used pattern. The already made frameworks execute this pattern, such as Spring, CDI or EJB. The old way of using this pattern was easier and simpler.

The syntax of this pattern is as follows:

public class SingletonSample { private static SingletonSample instance = null; private SingletonSample() { } public static SingletonSample getInstance() { if (instance == null) { instance = new SingletonSample(); } return instance; } }

The twenty-three classic design patterns are used with the UML notation to describe them.

UML is a simple notation system which helps the user to diagram a software subsystem.

UML does not focus on the implementation details. But, it is only concerned with relationships between the items under checking.


Design patterns can speed up the development process by giving tested, proven development solutions. The developers reuse the design pattern as they help them to solve various minor issues. These design patterns enable script legibility for coding developers and engineers.

Design patterns offer easy and simple solutions that are in a general format and doesn’t require any need. These solutions can be applied to major and specific problems of software development.

Additionally, the developers use these designs to communicate popular and famous names for transmissions. The old and common design patterns can be upgraded and updated with regular intervals of time.

Required Skills

Before beginning to learn Design Pattern in C#, the users should have a good knowledge of working with objects and their problems.

Basic knowledge of C# language is a necessary requirement for learning Design Patterns.

Since design patterns are viewed as a direct approach to computer programming and a bridge between the levels of programming languages and a specific class.

Why Should we use Design Pattern in C#?

While designing systems, there are three primary uses that should be taken into mind and those are:

It saves your time. The user doesn’t need to use their brain to reapply a possible solution from nowhere and waste quality time

Design patterns are common and easily known. People know what and why they are used. When you say -I used a factory to create that object. everyone will understand what you are talking about.

Most of these patterns are easy to understand. Mostly the solution will be not as efficient and easy as a design pattern.


The design pattern in C# benefits developers to a large extent.

C# developers can use different variations and tricks that can be applied to implement design patterns in a modern way.

The scope and future of design pattern in C# are bright and good. Since every software solution company is using Design Patterns in one or the other way.

Developers are looking for ideas and methods for quick and easy solutions.

Who is the Right Audience for Learning Design Pattern in C# Technologies?

Well, Design Pattern in C# is a powerful technique and can be learned by anyone who is keen to study computer engineering and software solutions. From a beginner to an experienced anyone can learn this technology.

Regardless of the language, learning design patterns is a multi-step process.




Primarily, the developer accepts the basics that design patterns are important in work. Then, they visualize the need to understand design patterns to know when to use them. Finally, they internalize the patterns in maximum detail that might help them to solve a given design problem.

How this Technology will help you in Career Growth?

There are various alternative ways to become familiar with design patterns. It is also strongly recommended to read the Smalltalk Companion for understanding the patterns. Since it supports alternative descriptions of each of the patterns.

There are several Web sites on learning and discussing design patterns for the developers. Numerous design patterns exist in the software world today, and ultimately nothing is preventing the user from creating their own patterns.

Design patterns support a generalized meaning and are fulfilling specific requirements. For example, a developer knows how a singleton pattern works and so he will help other developers to and understand that a singleton pattern is used in the project.


Design patterns have proven to be the best solutions to various problems that came during the development of software applications. The knowledge of Design pattern will not only boost the careers of developers but enhance their skills as a developer. Software development becomes an easier process with the help of design patterns. Moreover, Design Patterns are being effectively useful if used in the right situations and for the right reasons. When used cleverly, they can make a programmer marginally more capable by helping them to avoid reinventing the old methods, instead of using methods refined by others already. They also provide a useful common communication to visualize repeated problems and solutions when discussing with others or managing coding in larger teams.

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