
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.

csharp.tar.gz

CSharp-Compile-Run-code

.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

It’s important to call the `Dispose()` method in a robust manner by putting everything inside a `try...finally` block. 

```C#
Course course = null;
try
{
	course = new Course() { Title = ".NET Fundamentals" };
}
finally
{
	course?.Dispose();
}
```

However, if we have many objects in our program that use unmanaged resources, our code is filled with `try...finally` blocks. There must be a better approach.

# The `using` construct

C# syntax allows us to replace the `try...finally` blocks used with objects that implement the `IDisposable` interface to make our code more concise. When working with such objects, we can use the `using` construct:

```C#
using(var course = new Course() { ".NET Fundamentals" })
{
	// Use the object
} // Dispose() called automatically when this ending curly brace is reached
```

The `using` construct wraps a block of code that creates an object of some type that implements the `IDisposable` interface. The object’s `Dispose()` method is called automatically when the code block is completed.

> **Note:** We can't use the `using` block with any arbitrary object. It must implement the `IDisposable` interface. 

Let's test an example to confirm that the `using` block executes the `Dispose()` method at the end:

Learn to work with types that implement the IDisposable interface.

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

Automatic Disposing

Introduction