Book Image

Mastering Visual Studio 2017

By : Kunal Chowdhury
Book Image

Mastering Visual Studio 2017

By: Kunal Chowdhury

Overview of this book

Visual Studio 2017 is the all-new IDE released by Microsoft for developers, targeting Microsoft and other platforms to build stunning Windows and web apps. Learning how to effectively use this technology can enhance your productivity while simplifying your most common tasks, allowing you more time to focus on your project. With this book, you will learn not only what VS2017 offers, but also what it takes to put it to work for your projects. Visual Studio 2017 is packed with improvements that increase productivity, and this book will get you started with the new features introduced in Visual Studio 2017 IDE and C# 7.0. Next, you will learn to use XAML tools to build classic WPF apps, and UWP tools to build apps targeting Windows 10. Later, you will learn about .NET Core and then explore NuGet, the package manager for the Microsoft development platform. Then, you will familiarize yourself with the debugging and live unit testing techniques that comes with the IDE. Finally, you'll adapt Microsoft's implementation of cloud computing with Azure, and the Visual Studio integration with Source Control repositories.
Table of Contents (11 chapters)

New changes with the out variables

Currently in C#, we need to first declare a variable before we pass it as an out parameter to a method. You can use a var while declaration if you initialize them in the same line, but when you don't want to initialize explicitly, you must declare them, specifying the full type:

    // predeclaration of 'out' variable was mandatory 
    int result; // or, var result = 0; 
    string value = "125"; 
 
    int.TryParse(value, out result); 
 
    Console.WriteLine("The result is: " + result); 

In C# 7.0, the out variables can be declared right at the point where they are passed as an out parameter to a method. You can now directly write int.TryParse(value, out int result); and get the value of the out parameter, to use it in the scope of the enclosing block:

    static void Main(string[] args) 
    { 
      string...