Advanced C# with .NET

Advanced C# with .NET

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1. Introduction to Desktop Development with .NET

In this section, we will learn what MAUI is, and how to set up a .NET MAUI application. We will also look at the structure of an MAUI application, and in the end, we will learn how to add some basic elements to our UI. This section will prepare us for the rest of the course where we will be working with more practical concepts.

What is .NET MAUI?

Setting up a MAUI Project

Understanding the Structure of a MAUI Project

Understanding XAML and Adding Elements

Task - Adding Elements in a MAUI Application

2. Interactive GUI

In this section we will learn about delegates, events and data binding. Using this knowledge we will learn how to make interesting interactive GUI applications.

Task - Defining Delegates

Task - Binding Event Handlers to Events

Task - Creating a Custom Event

Task - Practicing Data Binding

3. Threading

In this section, we will learn what Threading is and how to use it to keep our applications responsive, and run smoothly while performing resource intensive tasks. We will see how to differs from other similar concepts on C# and what are good practices when implementing Threading in our application. There will also be some interesting tasks to help us in understand this concept on a deeper level.

What is Threading?

Creating and Using Threads

Task - Preventing Program Freezes Using Threading

Asynchronous Programming vs Threading

The lock Statement

4. Generics & Reflection

In this section, we will learn how to make more robust methods, classes and other objects which can work multiple types of input data types, by first learning about Generics and how to implement generic classes, then we will move on to Reflection and how to use reflection for further improving the capabilities of our programs.

What are Generics?

Implementing Generic Methods

Task - Implementing a Generic Method

Implementing Generic Classes

Task - Implementing a Generic Class

Introduction to Reflection

Basic Reflection

Task - Reflection

Course Content

Advanced C# with .NET

The lock Statement

When working with multiple threads, there can be situations where multiple threads are trying to access and update one resource at the same time. A resource can be anything, for-example a variable, a file, or even a remote resource which is being accessed through an API.

Such situations are called "race conditions" because whenever the threads usually race for the same resource and modifying the same resource at the same time can lead to unpredictable and inconsistent results.

We can ensure that there are no race conditions in our application by enclosing the code in lock statements wherever it's expected that multiple threads might try to execute those statements at once.

In case multiple threads try to access a resource or execute a piece of code enclosed in a lock, they are enqueued in a queue and forced to access the resource one by one, effectively eliminating any chance of a race condition.

The syntax for a lock statement is:

index


              1234
            
object keyObject = new object();
lock(keyObject) {
    // code to execute
}

Here keyObject is an instance of the object class, and it serves as a key which ensures synchronization between multiple threads. This object should be the same for all the threads so it's usually a good practice to make it either a static member or make it accessible to all the threads without any change.

The following video demonstrates the usage of the lock statement:

1. What is the purpose of the lock statement in C#?

2. Which keyword is used to define a critical section of code protected by a lock?

Everything was clear?

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Section 3. Chapter 5

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