What's New in ReSharper 9

ReSharper 9 supports Visual Studio 2015 Preview, C#6.0 and regular expressions; brings more bulk quick-fixes; vastly improves support for JavaScript & TypeScript; presents a new file layout editor and navigation actions. It is also based on a new platform, reducing memory consumption when ReSharper is installed in Visual Studio along with dotCover, dotTrace, and/or dotMemory.

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Visual Studio 2015 Preview support

ReSharper 9 integrates with Visual Studio 2015 Preview while preserving compatibility with previous releases of the Microsoft IDE including versions 2013, 2012 and 2010. However, support for Visual Studio 2005 and 2008 is now discontinued. See this blog post for more details.

Support for the upcoming C#6.0

Although the feature set for C#6.0 is not yet finalized, ReSharper 9 already provides support for such new language constructs as static usings and exception filters. We are also introducing a set of new quick-fixes to replace curly brace delimited constructs with expression bodies, or to update your null checking code using the new ?. operator.

Conditional Access support in ReSharper 9

Please take a look at this post for more details on C#6.0 support in ReSharper 9.

Fix in Scope evolution

ReSharper 9 expands the Fix in Scope feature with an ability to remove redundant qualifiers, fix naming or remove regions in the scope of a project or the whole solution.

Fix in scope: Remove redundant qualifiers

Bulk imports support

ReSharper is now able to look through the code in your solution and generate the appropriate imports for all the types.

Bulk import type in ReSharper 9

In addition to ordinary member methods, extension methods get imported as well. The only case when ReSharper is unable to import a type is when it resolves to two different namespaces (e.g., System.String and User.String).

Those include a new Go To Action feature to allow searching for a particular action using the legendary Alt+Enter shortcut and Navigate to Exposing APIs option for finding all the methods that are capable of returning a particular type.

Go To Action in ReSharper 9

Find Usages gets a configurable setting for the Preview Tab, and it no longer blocks the UI on long-running searches. You can also filter or ignore particular issues in the Find Results Window that was updated not to produce extra tabs for the same type.

Code style settings

With the new File Layout Editor you can easily customize your coding style settings in a single place without having to look through lots of different options. This works for C#, VB.NET, HTML, JavaScript and TypeScript.

Code style setting in ReSharper 9

A new shared platform

Starting with ReSharper 9, we offer a single installer for all JetBrains .NET tools including ReSharper, dotTrace, dotMemory, dotCover and dotPeek. You will be able to choose which products you want to install and let the installer do the rest. All those tools will operate on a shared platform, which conserves resources when several products are running at the same time.

ReSharper 9: shared platform for all .NET tools

In addition to common installer we introduce ReSharper Ultimate, a single license that covers all JetBrains .NET tools.

Turning features off and on

With ReSharper 9 you can turn off the features you don't need in a particular work scenario to reduce resources consumption. In case you have several JetBrains .NET tools installed there is an option to turn them on and off too depending on your needs.

Regular expressions

ReSharper 9 provides you with code completion for wildcards and regular expression groups, highlights errors, and offers a quick-fix to adjust wildcard backslashes to C# style. It comes with a separate Validation Utility for regular expressions that lets you quickly check input against a regular expression and get an immediate view of the matches and groups.

Validation Utility for regular expressions in ReSharper 9

Type Dependency Diagram

Adding to the Project Dependency Graph, ReSharper 9 expands its set of Architecture Tools with a Type Dependency Graph. This diagram can be most helpful for finding out what code depends on a particular type, and what the type itself depends on.

Type Dependency Diagram in ReSharper 9

Enhanced JavaScript and TypeScript support

ReSharper 9 provides tons of enhancements for JavaScript and TypeScript development that include a set of new quick-fixes to cover over 270 different types of errors, new live templates for common TypeScript entities, and new code generation options to make it easier to implement interfaces or generate missing or overriding members.

Moreover, there is a set of new refactorings for JavaScript and TypeScript. Those include Introduce Field, Copy Type, move refactorings (such as Move Type To Module/File, Move Into Matching Files and Move To Folder), Rename File as well as the Import of Types for Pasted Code.

Import of Types for Pasted Code refactoring for TypeScript

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Previous Versions

ReSharper 7
  • Support for Visual Studio 2012
  • New refactorings
  • Smoother code formatting
  • Easier code review
  • Members Hierarchy
  • CSS Style Hierarchy
  • Unit testing improvements
  • JavaScript support improvements
  • Improved naming style configuration
ReSharper 8
  • Support for Visual Studio 2013
  • Project dependency viewer
  • Faster code fixes
  • Multifile templates
  • Navigation improvements
  • Free command-line version of ReSharper
  • More code inspections and quick-fixes
  • New solution-wide refactorings
  • Extraordinary XAML support
  • More accessible code completion
  • CSS support improvements
  • Enhanced JavaScript support
  • Extension manager