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At its heart, Visual Studio for Mac is a macOS counterpart of the Windows version of Visual Studio. If you enjoy the Visual Studio development experience, but need or want to use macOS, you should. Visual Studio for Mac Announcement: This forum has been migrated to provide our customers one convenient and responsive system for all feedback. You can now suggest new ideas, browse and vote on existing ideas in the Visual Studio Developer Community. Visual Studio for Mac is a new member of the Visual Studio family for mobile-first, cloud-first development. This video preview shows how to get started with Visual Studio for Mac and explores its.

By Alessandro Del Sole | November 2017

Visual Studio for Mac is the powerful, new native development environment from Microsoft that perfectly embodies the company’s mobile-first, cloud-first vision. It helps you build cross-platform apps with Xamarin and .NET Core—and games with Unity—using your existing .NET skills and your favorite programming languages, such as C# and F#. You’ll find an introduction to Visual Studio for Mac at msdn.com/magazine/mt790182. In this article, I’ll focus on some powerful features in the code editor and the debugging tools that will help you increase your productivity.

A Roslyn-Powered Code Editor

Visual Studio for Mac allows you to write code in C# and F# on macOS. This is possible because the IDE leverages the .NET Compiler Platform, also known as Project “Roslyn” (github.com/dotnet/roslyn). Roslyn provides open source, cross-platform .NET compilers that expose rich code analysis APIs. As in Visual Studio 2015 and 2017 on Windows, Roslyn powers the code editor in Visual Studio for Mac, providing an enhanced coding experience with syntax colorization, IntelliSense, live code issue detection, fixes and refactorings. The official documentation explains how to use code fixes and refactorings in general (bit.ly/2jKt69D), so in this article I’ll focus more specifically on features and capabilities such as generating types, removing redundant code, navigating code, adding support for custom languages and code snippets. All of these features are available to both Xamarin and .NET Core projects.

Generating Types On-the-Fly

One of the nicest productivity features in the code editor is the ability to generate new types while coding, without losing your focus on the active editor. For example, you can write the name of a type that doesn’t exist yet, and when the code editor highlights the type name as a code issue, you can right-click it (or press Alt+Enter), select Quick Fix | Generate Type. Figure 1 shows an example based on generating a type called Person.

Figure 1 Generating a New Type While in the Active Editor

The first option, Generate class ‘Person’ in new file, will generate a new class called Person with the internal modifier inside a new file called Person.cs. The second option, Generate class ‘Person,’ will generate a new class called Person with the internal modifier inside the current file. The third option, Generate nested class ‘Person,’ will generate a new private class called Person nested inside the type that’s currently active in the code editor (in this case the new class would be generated inside the Program class). You can then change the internal or private modifier either manually or by right-clicking the modifier and then still selecting Quick Fix. In all cases, the new class is generated with an empty constructor. The fourth option, Generate new type, instead shows a dialog where you can specify what type you wish to create (class, interface or enumeration), the access modifier and the destination. And you’re not limited to this—you can use the same technique to add members to the newly generated type. You can simply assign or invoke a property, field or method that doesn’t yet exist and leverage quick fixes to add one easily, as demonstrated in Figure 2, which shows how to add a new property called LastName to the Person class. The Generate variable ‘LastName’ option provides different suggestions based on the current context.

Figure 2 Generating a New Member

In this case, the code is making an assignment, so the code editor suggests you generate a new property or field. Based on the code, the code editor will also assign the proper type to the newly generated member, which means it will generate a property (or field) of type string. The code editor can analyze method invocations and generate matching method signatures. This feature is part of the code refactoring tooling and helps you keep your focus on the code while writing.

Removing Redundant Code

The code editor in Visual Studio for Mac also highlights redundant code—code that’s not necessary and not utilized. Redundant code is easily recognizable because it’s grayed out. Behind the scenes, redundant code is highlighted based on some source analysis rules that cause the redundant code to be considered an issue. (You can control these rules, but that’s out of scope here.) Most of the time you’ll find examples of redundant code based on unnecessary using directives, but redundant code recognition isn’t limited to this. For example, an empty constructor and the internal modifier are highlighted as redundant in Figure 3.

Figure 3 Removing Redundant Code

If you right-click some redundant code, which you recognize by its lighter color, you can then select Quick Fix and Visual Studio will show a code fix that will remove the unnecessary code. Additionally, you’ll see a submenu called Options that allows you to:

Suppress the current issue detection.
Configure the analysis rule further in the Visual Studio preferences.
Apply the code fix for multiple issues of the same type at the document, project or solution level.

Similarly, in the earlier example you can easily fix redundant internal modifiers for type definitions (internal is, in fact, the default modifier in C#). This technique applies to any analysis rule that highlights redundant code in the editor.

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Navigating Code

Navigating between code files and between members in a code file is extremely common and having built-in, powerful navigation tools significantly aids productivity. Visual Studio for Mac provides a number of robust tools that make it easier to navigate between files, types and members. First of all, you can quickly move between code files by pressing Control+Tab. This action shows a popup where you can see a list of files in your solution. Holding Control and pressing Tab again cycles down the list and then, when you release, the selected file will be opened in the editor. For source code navigation, the next subsections talk about less-known productivity features that are incredibly useful.

The Find All References and Navigate Tools

The Find All References tool allows you to retrieve all the references to a type or member in the solution. To see this tool in action, simply right-click a type or member name in the code editor and then select Find All References. References are shown in the Search Results pad, as shown in Figure 4.

Figure 4 Finding a Type or Member References

In the Search Results pad, you can see (starting from left to right) the project that contains the reference, the code file including the position, the source text that contained the referenced object, and the full pathname of the source file. You can double-click a reference and the code editor will open the appropriate code file and place the cursor on the selected occurrence. Notice how the source code in the Text column has basic syntax colorization. Find All References is very powerful, but sometimes you might want to filter your search based on certain type and member characteristics. To accomplish this, you can use the Navigate tool, which you invok

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