Object-Oriented Programming in C#


Microsoft’s .NET is a revolutionary advance in programming technology that greatly simplifies application development and is a good match for the emerging paradigm of Web-based services, as opposed to proprietary applications. Part of this technology is the new language from Microsoft, C#. This language combines the power of C++ and the ease of development of Visual Basic 6. It bears a striking resemblance to Java and improves on that language. C# has become the dominant language for building new applications on Microsoft platforms.

This thorough and comprehensive course is a practical introduction to programming in C#, utilizing the services provided by .NET. This course emphasizes the C# language. It is current to Visual Studio 2017, .NET Framework 4.7 and C# 7.0. Important newer features such as dynamic data type, named and optional arguments, the use of variance in generic interfaces, asynchronous programming keywords, and tuples are covered in a final chapter. A supplement covers the fundamentals of Language Integrated Query (LINQ).

This course is intended to be fully accessible to programmers who do not already have a strong background in object-oriented programming in C-like languages, such as C++ or Java. It is ideal, for example, for procedural programmers who desire to learn C#.

An important thrust of the course is to teach C# programming from an object-oriented perspective. It is often difficult for programmers trained originally in a procedural language to start “thinking in objects.” This course introduces object-oriented concepts early, and C# is developed in a way that leverages its object orientation. A case study is used to illustrate creating a complete system using C# and .NET. Besides supporting traditional object-oriented features, such as classes, inheritance, and polymorphism, C# introduces several additional features, such as properties, indexers, delegates, events, and interfaces that make C# a compelling language for developing object-oriented and component-based systems. This course provides thorough coverage of all these features.

C# as a language is elegant and powerful. But to utilize its capabilities fully, you need to have a good understanding of how it works with the .NET Framework. The course explores several important interactions between C# and the .NET Framework, and it includes an introduction to major classes for collections, delegates, and events. It includes a succinct introduction to creating GUI programs using Windows Forms. The course concludes with a chapter covering the newer features in the language through C# 7.0.

Numerous programming examples and exercises are provided, including the case study. The student will receive a comprehensive set of materials, including course notes and all the programming examples.

The course includes four electronic supplements, provided as PDF files. They cover Visual Studio 2017, Language Integrated Query (LINQ), unsafe code and the C# pointer type, and .NET 4.7.


  • Acquire a working knowledge of C# programming.

  • Learn how to implement programs using C# and classes from the .NET Framework.

  • Learn how to implement simple GUI programs using Windows Forms.

  • Gain a working knowledge of dynamic data type, named and optional arguments, and other new features in C# 4.0.

  • Learn how to do asynchronous programming using new keywords in C# 5.0.

  • Become aware of new features in C# 6.0 and C# 7.0.


Experience in the following is required for this C# class:

  • Programming experience in a high-level language.

Course Overview

NET: What You Need To Know

.NET Executables and the CLR

A .NET Testbed for C# Programming

Using Visual Studio 2017


First C# Programs

Hello, World


Variables and Expressions

Using C# as a Calculator

Input/Output in C#

.NET Framework Class Library


Data Types in C#

Data Types

Integer Types

Floating Point Types

Decimal Type

Characters and Strings

Boolean Type


Nullable Types


Operators and Expressions

Operator Cardinality

Arithmetic Operators

Relational Operators

Logical Operators

Bitwise Operators

Assignment Operators


Checked and Unchecked


Control Structures

If Tests




More about Control Flow



Object-Oriented Programming





Object-Oriented Languages




Classes as Structured Data


Constructors and Initialization

Static Fields and Methods

Constant and Readonly


More about Types

Overview of Types in C#

Value Types

Boxing and Unboxing

Reference Types

Implicitly Typed Variables


Methods, Properties and Operators


Parameter Passing

Method Overloading

Variable-Length Parameter Lists


Auto-Implemented Properties

Operator Overloading

Characters and Strings



String Input

String Methods

StringBuilder Class

Programming with Strings

Arrays and Indexers



Random Number Generation

Jagged Arrays

Rectangular Arrays

Arrays as Collections

Bank Case Study-Step 1




Single Inheritance

Access Control

Method Hiding


Bank Case Study-Step 2


Virtual Methods and Polymorphism

Virtual Methods and Dynamic Binding

Method Overriding

Fragile Base Class Problem


Abstract Classes

Sealed Classes

Heterogeneous Collections

Bank Case Study-Step 3


Formatting and Conversion


Format Strings

String Formatting Methods

Bank Case Study-Step 4

Type Conversions



Exception Fundamentals

Structured Exception Handling

User-Defined Exception Classes

Inner Exceptions

Bank Case Study-Step 5



Interface Fundamentals

Programming with Interfaces

Using Interfaces at Runtime

Bank Case Study-Step 6

Resolving Ambiguities


.NET Interfaces and Collections


Bank Case Study-Step 7

IEnumerable and IEnumerator

Copy Semantics and ICloneable

Comparing Objects

Generic Types

Type-Safe Collections

Object Initializers

Collection Initializers

Anonymous Types

Bank Case Study-Step 8


Delegates and Events


Anonymous Methods

Lambda Expressions



Introduction to Windows Forms

Creating Windows Applications Using Visual Studio 2017

Partial Classes

Buttons, Labels and Textboxes

Handling Events

Listbox Controls


Newer Features in C#

Dynamic Data Type

Named Arguments

Optional Arguments

Variance in Generic Interfaces

Asynchronous Programming Keywords

New Features in C# 6.0 and C# 7.0

You will be invoiced via Email