SonarLint for Visual Studio is based on and benefits from the .NET Compiler Platform ("Roslyn") and its code analysis API to provide a fully-integrated user experience in Visual Studio 2015 and Visual Studio 2017.
SonarLint is free, open source, and available in the Visual Studio Gallery.
With version 2.0 you can now establish a connection to a SonarQube server and bind your Visual Studio solution to a SonarQube project. This operation automatically updates the rulesets of the solution and attaches the solution to the required Roslyn analyzers.
- March 2, 2017 - Version 2.11.0 provides a new metric (Cognitive Complexity) and fixes the Cyclomatic Complexity. It also provides new rules.
- February 10, 2017 - Version 2.10.0 provides two bug fixes for SonarLint and multiple improvements around the rules.
- January 12, 2017 - Version 2.9.0 provides support for VS2017 and brings many C# rules to the IDE. We also fixed some bugs with the dataflow engine and have improved multiple rules.
- December 6, 2016 - Version 2.8.1 fixes an issue with the connected mode.
- November 5, 2016 - Version 2.8 brings the Connected Mode to VB.NET. The symbolic execution engine for C# was updated to support transitive relationship evaluation. Furthermore, in-source issue suppressions are being tracked by Rule S1309. Go check out the fill list of changes in the release notes.
- September 20, 2016 - Version 2.7 was released. This release brings many VB.NET rules to the product and at the same time improves C# rules that are based on the symbolic execution engine. Check out the release notes for the full list of changes.
August 29, 2016 - Version 2.6 was
released. This release further improves the data flow analysis engine, support for relational operators was added. Furthermore, the information on
!=) relationships is combined with the results of value and reference equality method calls. Don't forget to check out the release notes for the full list of changes, and let us know what you think.
July 27, 2016 - Version 2.5 was
released. We have improved our data flow analysis engine to evaluate expressions. Now four rules are based on this symbolic execution engine, all of them
benefit from this improvement. We also added a new rule (Rule S3655)
to report on
Nullable<T>.Valueaccesses when the nullable is known to be empty. Check out the release notes for the full list of changes, and let us know what you think.
- June 28, 2016 - Version 2.4 was released. We have implemented the first version of our data flow analysis engine, and two new rules have been implemented on top of it. Check out the release notes for the full list of changes, and let us know what you think.
- June 9, 2016 - Version 2.3 was released today. In this version we have added three new rules and improved the dead store rule (Rule S1854) to not have false negatives. Check out the release notes for the full list of changes, and let us know what you think.
- May 18, 2016 - Version 2.2.1 was released today. This version is a minor bug fix/improvement release. Small inconveniences have been fixed in the connected mode. Furthermore, several rules have been improved to handle more cases and not report false positives. The release notes contain detailed information on all the changes.
- May 4, 2016 - Version 2.2 was released today. We improved functionality for the connected mode with notification when the local quality profile is out-of-date. Also 8 new C# rules have been added to the product and many have been improved. Check out the release notes for the full list of changes, and let us know what you think.
- April 13, 2016 - Version 2.1 was released with improved functionality for the connected mode, and also 6 new C# rules have been added to the product. Check out the release notes for the full list of changes, and let us know what you think.
- March 17, 2016 - Version 2.0 was released with the ability to establish a connection to a SonarQube server and bind your Visual Studio solution to a SonarQube project. This operation automatically updates the rulesets of the solution and attaches the required Roslyn analyzers to the solution.
- February 29, 2016 - Version 1.9.0 was released with ten new C# rules and several code fixes. We've fixed some rules to handle more cases and reduced the number of reported false positives. Let us know if you like this new version. And don't forget to check out the full release notes here.
February 15, 2016 - Version 1.8.0 was
released with seven new C# rules, which makes it 142 C# rules altogether. One of the most valuable rules is Rule S1698,
which looks for possibly mistaken
==usages instead of
Equalscalls. Don't forget to check out the full release notes in JIRA if you are interested in all changes.
- February 10, 2016 - A new post was released on the SonarQube blog, where we highlighted a couple of issues found recently in Roslyn project. Go check out the post, it shows the value of SonarLint. If you are convinced, download the product from the Visual Studio Gallery.
- January 25, 2016 - Version 1.7.0 was released with 5 new C# rules and several code fixes. We've fixed all known bugs and rules that reported false positives, so the overall developer experience improved a lot. Let us know if you like this new version. And don't forget to check out the full release notes, which was moved to JIRA.
December 9, 2015 - SonarLint for Visual Studio Version 1.6.0 was
released with 11 new C# rules and many nice enhancements. We've put effort into finding method overloads that might not behave as expected. Specifically
Rule S3427 checks for overloads where default parameter values are hidden by other overloads, and
Rule S3220 reports on method calls that resolve to methods with
params, but could also match another overload of the same method. Check out the release notes for the full list of new rules, and let us know what you think.
- November 16, 2015 - SonarLint for Visual Studio Version 1.5.0 was released with 12 C# and 10 Visual Basic .NET rules. Feel free to come back to us with suggestions and feedbacks.
- October 28, 2015 - SonarLint for Visual Studio Version 1.4.0 has been released with 20 Visual Basic .NET rules. 7 of these are also implemented for C#, and 5 have code fixes. Let us know what you think about the new release.
- October 6, 2015 - Version 1.3.0 of SonarLint for Visual Studio was released today. With 11 new rules and 10 new code fixes, there are now more than 100 rules for C# available out of the box and 28 of them have code fixes. As usual your feedback is highly welcome on this new version. We'll be back in few weeks with version 1.4.0 containing some rules for VB.NET.
- August 24, 2015 - Today we released Version 1.2.0 of SonarLint for Visual Studio. This is our first release with codefixes; we have added almost 20 of them. If you want to contribute, code fixes are the easiest ways to get started. Two new rules were also added to SonarLint for Visual Studio during the sprint.
- August 7, 2015 - Version 1.1.0 with 13 new rules was released today. In addition to the new rules, we focused mainly on user experience. Unused or unneeded code is faded out in the IDE, so low severity warnings don't pollute the Error Window any more. We also fixed a few false positives. Don't forget to check out the release notes.
- July 20, 2015 - SonarSource is pleased to announce the release of Version 1.0.0 of SonarLint for Visual Studio. This is the first major version of the product, released on the same day as Visual Studio 2015. This initial version of the product contains 76 rules.
Real Bugs in Real ProjectsUsing the same value on either side of a binary operator is almost always a mistake. In the case of logical operators, it is either a copy-paste error and therefore a bug, or it is simply wasted code, and should be simplified. Rule S1764 Found in Roslyn, Nuget
SonarLint for Visual Studio is open source under the LGPL v3 license. You can fork us on GitHub, and submit Pull Requests. Feel free to fix bugs or to implement new features.