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This post describes the new Runtime, Compiler and Base Class Library (BCL) improvements in the .NET Framework 4.7.1. You can try out these features by downloading the Developer Pack, described in the Welcome to the .NET Framework 4.7.1 Early Access blog post.
When learning to write asynchronous methods, it is not trivial to get the interactions between various methods (which may or may not be asynchronous) right. In fact, the examples in yesterday’s article which use an async void method should normally only be used in event handlers, and even so, there are caveats to consider. In this article, we’ll go through various different scenarios in which async/await can be used.
In the previous two articles, I’ve explained why and how to use async/await for asynchronous programming in C#. Now, we will turn our attention to more interesting things that we can do when combining multiple tasks within the same method.
The main idea of local functions is very similar to anonymous methods: in some cases creating a named function is too expensive in terms of cognitive load on a reader. Sometimes the functionality is inherently local to another function and it makes no sense to pollute the "outer" scope with a separate named entity.
In this lesson, you're going to learn about the different parts of a very simple program that displays the message, "Hello World!" You'll also learn what happens when you build and run the application, and you'll learn about some common errors you may encounter and how to correct them.