
Delve into .NET development with C#, covering programming fundamentals, object-oriented principles, exception handling, and multithreading. Gain hands-on experience to build cross-platform applications effectively.

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.NET is Microsoft’s free and open source framework for developing native software applications on Linux, macOS, and Windows. The power of cross-platform development allows developers to design, code, and run programs on a wide array of platforms.

This course is an introduction to developing .NET applications using C#. You’ll start start with a comprehensive review of C# and computer programming fundamentals: data types, conditionals, loops, methods, and more. You’ll then review the basics of object-oriented programming before diving into methods, exception handling, delegation, and events. With this foundation, you’ll continue building interfaces, collections, database operations, and multithreading. You’ll wrap up with process improvements using dynamic binding, garbage collection, and unmanaged resources.

By the end of this course, you’ll have hands-on experience with C# and .NET, and be ready to build applications using object-oriented programming principles on almost any platform.

Mastering C# and .NET

## Introduction

**Indexers** are special constructs that allow us to access an object’s content through an index. It adds an array-like behavior to custom types.

For example, to access the second item of an array, we use an index, `1`:

```C#
int[] integerArray = new int[] { 2, 6, 8, 1 };
Console.WriteLine(integerArray[1]);
```

We can work with custom types in a similar fashion with indexers as we do with `[]` to access an array’s contents.

## Syntax

In terms of syntax, indexers are like properties because they have `get` and `set` blocks. Unlike properties, they don’t have names, but are defined by a `this` keyword followed by `[]`:


```C#
// Multiple parameters can be supplied
return_type this[parameter_type]
{
	get { }
	set { }
}
```

## Usage

Let's look at the following example for better understanding:

# Introduction

**Indexers** are special constructs that allow us to access an object’s content through an index. It adds an array-like behavior to custom types.

For example, to access the second item of an array, we use an index, `1`:

```C#
int[] integerArray = new int[] { 2, 6, 8, 1 };
Console.WriteLine(integerArray[1]);
```

We can work with custom types in a similar fashion with indexers as we do with `[]` to access an array’s contents.

# Syntax

In terms of syntax, indexers are like properties because they have `get` and `set` blocks. Unlike properties, they don’t have names, but are defined by a `this` keyword followed by `[]`:


```C#
// Multiple parameters can be supplied
return_type this[parameter_type]
{
	get { }
	set { }
}
```

# Usage

Let's look at the following example for better understanding:

Learn to work with classes as if they were arrays.

Getting Started

C# Programming Basics

Classes and OOP

Classes and OOP II

Exception Handling

First Assessment

Delegates and Events

Interfaces

Additional Features

Collections

LINQ

Working with Strings

Working with Dates and Time

Multithreading and Asynchronous Programming

Reflection

Dynamic Binding

Garbage Collection and Unmanaged Resources

Final Assessment

Next Steps

Appendix

Indexers

Introduction