Generics is a concept so ingrained into .NET that we can't do without it. In this module we'll explain the simple and more
advanced things of Generics.
- Using Generics
- Creating Generics
- Understanding Covariance and Contravariance
Delegates and Events
Storing functions in variables, that is exactly what delegates allow us to do. This concept is used in lots of locations,
especially when using asynchronous programming. Events are based on delegates, so whenever something interesting happens
in a UI (eg. mouse click) and we want to react on it, we need delegates to handle it correctly.
- Creating Delegates
- Using Delegates
- Multicast Delegates
- Creating Events
- Using Events in a UI
Linq Language Features
.NET introduced a couple of features for LINQ that make the life of developers a hell of a lot easier.
We'll explore them in this chapter.
- Type Inference
- Anonymous Types
- Anonymous Methods
- Lambda Expressions
- Extending Existing Classes with Extension Methods
LINQ allows to write queries that are very familiar to SQL queries. This makes certain operations like filtering and sorting
data very easy. This concept is used in lots of locations, whether it is to connect to SQL databases of reading data
from Active Directory
- What is LINQ?
- LINQ to Objects, SQL, Entity Framework and XML
LINQ Syntax Fundamentals
- LINQ's Enumerable Class
- Func Delegate
- Query Syntax vs. Method Syntax
- Deferred Query Evaluation
- Querying Data using LINQ
- Group and Join Operators
- Don't Forget the Let Operator!
C# now has support for tuples, which opens up a bunch of programming
techniques for writing better and comprehensible code.
- Introducing Tuples
- Writing Symmetric Functions
- Understanding Destructuring
Reference Symantics with Value Types
Writing super efficient code requires some special language features.
- Understanding Reference Semantics
- How Value Types allow you to write faster code
- Passing value types by reference with new access modifiers
When you create an object in .NET, the framework takes care of memory management for you. What actually happens with objects
when .NET decides to remove them from memory? That's what Garbage Collection is all about and we'll have a look at why
it is important to understand it correctly.
- The Lifecycle of a Class Instance
- GC class and Members
- GC Ressurection
- Forcing a Garbage Collection
- Weak References
- The Dispose Pattern
- Garbage Collection for Unmanaged Resources
In todays world where devices get more CPUs instead of the amount of Hz they produce, we need to be able to harvest this
power. In the modules about multi-threading we'll discuss the advantages and problems you will encounter when using concurrency.
- What is Concurrency?
- Understanding Processes and Threads
- Different Kinds of Concurrency
- Scheduling Threads
Multithreading in .NET
Everyone starts by learning the fundamentals. The Thread class is the most basic implementation for creating concurrency.
It is important to have an understanding of this class so you can understand and appreciate the libraries that came afterwards.
- The Thread Class, ThreadStart Delegate
- Exceptions and Threads
- Understanding Thread Pooling
Using variables in a multi-threaded environment can be very dangerous and/or confusing. In this module we'll explain what
can go wrong and how to avoid it.
- Race Conditions and Dead Locks
- Avoiding Race Conditions
- Synchronizing Threads: Locks, Monitors, Signals, ...
- Synchronization Guidelines
- Thread Safety in .NET
Since .NET 4.0 we have a newer way of creating a multi-threaded application. We can make use of tasks to do our bidding.
There are again advantages and disadvantages to using this library and we'll explore them in this module.
- What are Tasks?
- Waiting Asynchronously
- Dealing with Exceptions
- Task Cancellation
The async and await syntax explained
Async and await are a language construct existing since .NET 4.5. This construct allows asynchronous programming in a newer
and refreshing way.
- What is Asynchronous Programming?
- Invoking any Method, Synchronous and Asynchronous
- Async Exception Handling
Asynchronous programming in .NET
- A History of Asynchronous Programming in .NET
- Understanding SynchronizationContext
- How to Make your Sync Methods Async
- Async Guidelines
In a multi-core environment, being able to split data so every core is working on something is incredibly useful. This
module explores a library created to do just that.
- What is Parallel Programming?
- Concurrent Collections
- Parallel LINQ
Reactive Extensions, a feature a bit complex to understand, but very powerful and hard to get back from. It is sometimes
called LINQ to events, because we think of asynchronous operations or events as a stream of data. An observable collection
that will, from time to time, have a new interesting event pop up that we can react to.
- Push vs. Pull
- Understanding IObservable<T> and IObserver<T>
- Hot and Cold Observables
- Using LINQ with Rx
- Building your own Rx Extensions
Tips and Tricks for Debugging
Most developers spend the majority of their time on debugging. If we can make this process easier and give the developers
more control, we should definitely do that. In this module we'll look at some features in Visual Studio that can help
us a lot during debug time.
- Advanced Breakpoints.
- Using the Immediate and Watch Window.
- Debugging Multi-Threaded Code.
Serialization in .NET
- Serialization and Deserialization Patterns in .NET
- Using Formatters for Serialization
- Using JSON.NET
- Serializing Exceptions
Attributes and Reflection
In this module we'll talk about using attributes to add metadata to almost everything in .NET. Metadata is of course only
useful if we can actually interpret it and that's where reflection comes into play. Reflection is a powerful feature
used in lots of libraries and applications.
- What are Attributes?
- Applying Attributes
- Common Predefined Attributes
- Building Custom Attributes
- What is Reflection?
- Retrieving Attribute Values
Expressions and Static Reflection
Making use of Expressions to dynamically create code that can be run when we want to is very powerful. It is a feature
used by LINQ for example to translate queries for a database or other system.
- What are Expressions?
- How does LINQ to Database work?
- Using Static Reflection
- Getting the Name of a Property
- Dynamically Generating Code with Static Reflection.
Using the Dynamic Language Runtime
.NET is a statically typed language, or is it? With the coming of .NET 4, Microsoft has introduced a new keyword allowing
us to use dynamically typed variables. In this module we'll explain the use cases for it and how powerful it actually
- Understanding the Dynamic Keyword
- Building your own Dynamic Types