ReSharper Ultimate 10.1 EAP Build 1 (Part 2)

The scope of improvements in the recently launched ReSharper Ultimate 10.1 EAP is so huge that the communications just don’t catch up with the development team anymore.

In the first part of an overview of the latest ReSharper Ultimate, we talked about an array of new context actions, refactorings, code inspections and quick-fixes.

This part 2 is less centered around C# support and lists more prominent improvements across languages supported by ReSharper, as well as considerable updates to other ReSharper Ultimate products: ReSharper C++, dotTrace and dotPeek.

ReSharper (continued)

Smart Paste

Smart Paste is a new feature that ensures the right escaping in string literals that you copy/paste around your code.

For example, you can copy a piece of text or XML that contains double quotes, paste it into a string literal in C#, and have ReSharper automatically escape all the quotes.

Smart-pasting XML into a C# string literal

This also works when you’re pasting a piece of C# code into an XML doc tag: Smart Paste will escape any generics and lambda syntax, as well as logical operators and anything else that is fine in C# but not allowed in XML values.

Other things that ReSharper can escape for you include file paths and line breaks.

The feature works in C#, VB.NET, JavaScript, XML, XAML and HTML files, making sure to respect the different ways of escaping illegal characters that are used in different contexts.

Initial support for JSON and JSON schemas

ReSharper 10.1 is expanding its technology reach by supporting JSON files and schemas in all supported versions of Visual Studio (2010-2015).

JSON and JSON schema support currently ranges from things as basic as syntax highlighting in older Visual Studio versions, to more sophisticated features like formatting and rearranging (for example, you can move object properties or arbitrary selections around), code inspections and quick-fixes, as well as code completion that is aware of schemas, paths, regular expressions and packages.

Regexp completion in JSON schema

JavaScript and TypeScript support evolves

ReSharper 10.1 brings initial support for experimental JavaScript syntax constructs that are projected to be part of ECMAScript 7. These include comprehensions, decorators, class properties, exponentiation operator, rest and spread properties for object literals.

In terms of TypeScript, ReSharper 10.1 EAP is highlighted by:

  • Support for TypeScript 1.7 that is (hopefully) complete
  • Experimental support for TypeScript 1.8 including string literal types

Other changes

Other notable changes in ReSharper 10.1 EAP 1 include:

  • Run configurations that are extended so that you can now attach the debugger to a running configuration
  • New code style settings and inspections to enforce style for braces and attribute sections
  • A quick-fix to convert a part of a loop to LINQ is now disabled by default (as it rarely produces a readable result), and a quick-fix to convert the full loop to a LINQ expression is downgraded to a hint
  • Correct detection of C# language level in .cshtml files
  • A new context action to add braces around switch case statements
  • Various fixes to existing quick-fixes such as “Encapsulate field” and “Change instantiated type”

Here’s the (presumably) full list of fixes in ReSharper 10.1 EAP 1.

ReSharper C++

Similar to the mainline ReSharper, ReSharper C++ 10.1 EAP introduces a substantial set of new context actions and quick-fixes. In addition, it adds To-do Explorer, improves the code generation subsystem, and supports more C++ language features.

To-do Explorer

ReSharper C++ 10.1 introduces the long-awaited navigation view: the To-do Explorer, which lets you view, group and filter comments that contain one of the 3 default to-do patterns (Bug, Todo and Not Implemented) and any custom patterns that you might want to set up.

Todo Explorer in ReSharper C++

If you use the full ReSharper Ultimate license and you have a multilingual solution, the To-do Explorer will gather to-do items from all supported languages: C#, VB.NET, C++, JavaScript, XAML, HTML etc.

An array of new context actions and quick-fixes

In most cases whenever there’s a code inspection, one or several quick-fixes should be available to alleviate a detected problem. With that in mind, ReSharper C++ 10.1 adds quick-fixes to some of its existing code inspections. Examples include:

  • “Create and initialize field from constructor parameter” is now available as a quick-fix to a code inspection that detects an unused constructor parameter:
    Quick-fix to create and initialize field from constructor parameter in C++
  • Whenever ReSharper C++ reports possible unintended object slicing, it now suggests a quick-fix to add an explicit cast.
  • If the type of a value that is actually returned doesn’t match the return type of a function, ReSharper C++ will suggest a quick-fix to change the return type:
    Quick-fix to change function return type in C++
  • If you are trying to assign to a read-only member, ReSharper C++ will now suggest to make the data member involved mutable:
    Quick-fix to make data member mutable in C++
  • If a base class or its function receives a final specifier, ReSharper C++ will put error highlighting over its overriding classes or functions and provide quick-fixes to remove the specifier
  • For any empty declaration that ReSharper C++ encounters, it will suggest a quick-fix to get rid of it

Other changes

Other notable changes in ReSharper C++ 10.1 EAP 1 include:

  • Rename refactoring can now rename files in addition to code symbols
  • The list of supported C++ language features is extended with generalized lambda captures (C++ 14) and exception specifications
  • The Generate stream operations action available via Alt+Ins can now generate stubs for Boost.Serialization functions: save(), load() and serialize()
  • Generate relational operators can now optionally use std::tie
  • Formatting options are now taken into account when generating code
  • All ReSharper C++ actions are banned from changing library headers
  • Code completion in C++ has undergone a massive bugfix, totaling around 50 resolved issues

Here’s the full list of fixes in ReSharper C++ 10.1 EAP 1.


Extension methods rendered as instance methods

For years, dotPeek has displayed extension methods as static method calls, often complexified with a legion of casts, all of which made extension methods hard to follow in decompiled code.

This update finally learns to show extension methods being called like instance methods, which makes for much more readable code.

Extension methods in decompiled code

You’ll notice from the screenshot above that dotPeek will only show extension methods as an instance method call if it is valid to do so. That is, QueryExtensions.SortBy is shown as an instance method call, but Queryable.Take and Queryable.Skip are shown as static methods, because there are other Take and Skip methods in scope that would make showing these as instance calls ambiguous.

As this change belongs to the decompiler core, it should apply in ReSharper’s integrated decompilation functionality as well.


Thread diagram in Visual Studio

dotTrace integrated in Visual Studio becomes a fully functional Timeline Viewer that allows you to perform detailed analysis of timeline performance snapshots right in Visual Studio.

Threads diagram, a part of dotTrace Performance Profiler integrated in Visual Studio

Before dotTrace 10.1, the main drawback of the integrated viewer compared to its standalone counterpart was the absence of the Threads diagram. This update removes the drawback: the integrated viewer gets exactly the same diagram, which you can now use to select threads, time range, and of course, view thread activity and filtered time intervals.

Other changes

dotTrace console utilities also get their portion of improvements. The reporter.exe tool used to get performance data from snapshots (e.g., for profiling automation and CI) now puts additional data in its XML reports. If you build a report with the /add_process_info option switched on, the report will include a path to the executable of the process that was profiled. This can be extremely helpful when profiling applications with multiple child processes.

There is also a number of minor improvements, such as updated colors in Timeline Viewer tables (it’s now easier to distinguish between table item states), and a more convenient grouping of snapshots in dotTrace Home.

dotMemory, dotCover

As of ReSharper Ultimate 10.1 EAP build 1, dotMemory and dotCover don’t include any significant updates apart from bug fixes.

Wrapping it up

Please download ReSharper Ultimate 10.1 EAP.

Experiencing issues with the EAP? Please report them to issue trackers of affected products. Here are links to issue trackers that you can use to report or track issues: ReSharper, ReSharper C++, dotTrace, dotCover, dotMemory, dotPeek.

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ReSharper Ultimate 10.1 EAP Build 1 (Part 1)

Have you felt like it’s been all about Project Rider lately? Guess what, it hasn’t. We’ve been busy updating ReSharper Ultimate tools, and yesterday opened a new Early Access Program: ReSharper Ultimate 10.1 EAP 1 is now available for download.

This initial ReSharper Ultimate 10.1 EAP build accumulates a lot of changes across ReSharper and ReSharper C++; a few notable improvements in dotPeek and dotTrace; while changes in dotMemory and dotCover are so far limited to bug fixing and cosmetics.

Well, in fact, there are so many changes that this post only unveils those of them that relate to C# support in mainline ReSharper. Changes in support for other languages, as well as improvements to ReSharper C++, dotPeek and dotTrace will be described in a separate post later this week.

Anyway, please read on.


New context actions around strings

C# 6.0 as a whole and string interpolation in particular has been supported for a while, and this update adds a bunch of actions that help you switch between different ways of handling strings, such as interpolation, concatenation, and string.Format(), and makes sure all this is just an Alt+Enter away.

For instance, there’s now a context action to rewrite a string interpolation expression as a string.Format() call:
Convert to string.Format() call

Fancy string interpolation over concatenation? Alt+Enter will save you the effort of finding the right keys on your keyboard:
Convert string concatenation to interpolation

Gone way overboard experimenting with C# 6.0 features? No problem, ReSharper will detect whenever there’s nested string interpolation that should can be simplified:
Inline nested string interpolation

In some contexts, you just don’t need to use verbatim characters to differentiate identifiers from keywords. ReSharper can now point you at this kind of redundancy, and help you get rid of it locally or in a wider scope:
Remove redundant verbatim character

Other new actions around strings help:

  • Make a string equality check case-insensitive
  • Insert new arguments into string interpolation expressions
  • Use string interpolation expressions with various logger frameworks

New context actions to check argument values

Another group of context actions serves to generate checks upon method parameters based on their types:

  • For string parameters, ReSharper helps generate checks not only for nullness but for empty and whitespace strings
  • For numeric parameters such as int, double or decimal, ReSharper can write a check that ensures that only non-negative values are passed
  • For enum parameters, ReSharper generates a check that makes sure that an enum value being passed is in fact defined in the appropriate enum declaration, therefore guarding against ill-fated casts
  • Finally, for collection parameters, ReSharper helps set up a check against empty collections

Context actions to check parameter values

WCF-specific context actions, inspections and quick-fixes

Something clicked, and we’ve come up with a few inspections and actions that address some of the most common issues in WCF service development.

For example, whenever you have a WCF service method that is marked as [OperationContract(IsOneWay=true)] but it returns anything other than void or Task, ReSharper will spot this and suggest a fix to prevent a runtime error: you can either change return type to void or make the method two-way:

WCF quick-fix for a one-way operation that returns a non-Task type

If you have a [ServiceContract]-annotated interface that doesn’t have a single [OperationContract] member, then there’s something clearly going wrong: ReSharper will spot this and provide a quick-fix to annotate all members of the interface with [OperationContract].

Likewise, if you have methods marked as [OperationContract] in an interface that doesn’t have a [ServiceContract] annotation, ReSharper will spot this and suggest two options to resolve the issue:

WCF: containing type not marked as ServiceContract

Finally, there are new context actions to help you annotate all members in a [DataContract] type with either [DataMember] or [EnumMember] attributes. The longer your [DataContract] types are, the more you’re likely to appreciate this context action:

Context action to annotate WCF DataContract members with EnumMember

More new context actions and quick-fixes

There’s an assortment of new context actions and quick-fixes that can’t be classified as easily. These include:

  • A pair of context actions, one of which comments out a selection (effectively serving as an Alt+Enter equivalent of dedicated ReSharper shortcuts for commenting code), and the other uncomments whatever comment is under caret
  • A context action to delegate implementation of a non-implemented interface to a new field of the corresponding type
  • A pair of context actions to split or join attribute sections
    Context actions to split or join attributes
  • A context action to create another part of a partial type
  • A context action to add braces around switch case statements

Invert Boolean Member refactoring

When you modify a member that returns a boolean so that it gets an opposite meaning (say, refactor a method called IsNotAvailable() to IsAvailable()), you likely want to invert the value that it returns, and update other members that receive values from it.

This is what the new Invert Boolean Member refactoring can do for you. For example, by invoking it on a method, you can choose to rename the method and either invert values inside the method, and/or invert usages of the method.

Invert Boolean refactoring

The refactoring can be invoked on a method, property, local variable or a parameter.

More ReSharper improvements; changes to ReSharper C++, dotTrace and dotPeek…

…will be described in a follow-up post shortly.

What’s next?

Please download ReSharper Ultimate 10.1 EAP and make sure to put it to good use.

If you are experiencing issues with the EAP, please report them to issue trackers of affected products. Links to issue trackers that you can use to report or track issues are as follows: ReSharper, ReSharper C++, dotTrace, dotCover, dotMemory, dotPeek.

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Code Style Settings in ReSharper

ReSharper makes a clear delineation between the concept of a formatter (a component that changes the way code looks but does not change the syntax) and the code style settings, a piece of functionality that can, in fact, change syntax without changing the semantics. This blog post covers the updates to the code style settings that appear as part of ReSharper 10.

For example, no keyword has caused more C#-related holy wars than the ubiquitous var. Well, ubiquitous for some, since many people still prefer to hold a belief that var is a form of obfuscation. The choice of using or not using var is, of course, personal, and so it makes sense for ReSharper to provide settings for controlling how things like var, this. qualifiers, and other constructs are used in code.

ReSharper code style settings

These Code Style Settings exist in many languages: ReSharper supports them in C#, VB.NET, JavaScript/TypeScript and, of course, C++. Each of the settings generally consists of three distinct parts:

  • The setting description is fairly self-descriptive, though some settings are grouped and, in some cases, you can collectively change a setting for the entire group.
  • The preference determines how code is actually used. In some cases this is a yes/no switch (e.g., whether or not you want to use a private modifier explicitly), in other cases it’s a list (e.g., for var usage), and then there are more complicated settings such as the order of modifiers.
  • The notify with option, which is only available on some code style settings, lets you control how a setting violation is presented: as a hint, suggestion, error or warning or… avoid notifying the user altogether.

That last option, the one used for notification, essentially controls if and how the existing code is treated by ReSharper. For example, adding a redundant this. not only gets ReSharper to ‘gray out’ the redundant prefix, but offers extensive options for fixing the problem:

Quick-fix to remove this qualifier

Since this. is a piece of redundant code, ReSharper offers an extra option here to remove all redundancies. Naturally, both of the presented actions support the Fix in Scope mechanic, so they can be applied to the entire file, folder, project or solution.

In аdditiоn tо this mесhаniс, in RеShаrреr 10 yоu саn аlsо соnfigurе the insресtiоn right in that sаmе рор-uр mеnu. Yоu саn control insресtiоn severity:

Configuring ReSharper inspection severity

Note that, in the above, you can disable the inspection completely by choosing the Do not show option. It’s also worth noting that the above configuration feature applies to any kind of inspection, not just those related to code style!

Yоu саn соnfigurе the соdе style itsеlf, tоо!

Configuring code style inline

Оh, аnd if there’s а раrtiсulаrly wоrrying issue, yоu саn sеаrсh fоr it, аnd this аlsо fоllоws the Fiх in Sсоре mесhаniс insоfаr аs yоu’rе аblе tо sеаrсh fоr this type оf issue аt diffеrеnt sсореs:

Searching for similar issues

And while we’re on the subject of the Alt+Enter menu, check out a recently added option called Format Selection. Nothing to do with Code Style but still very cool (and yes, it re-formats the selected code according to your preferences):

Format code selection

One of the key aspects of code style settings is that, just like other ReSharper settings, you can share Code Style settings with your team, thereby enforcing a consistent style. You can find more info about settings here. Though, if you have been using earlier versions of ReSharper, ReSharper’s Options dialog has a separate item called Code Style Sharing for importing code style settings saved in ReSharper versions earlier than 6.1.

Now, for a look at some updates in ReSharper 10 specifically.

First of all, there are now settings for Attribute placement, so you can choose whether to keep attributes on a single line or several lines.

Code style attribute placement

ReSharper also got very smart about parentheses: even though it can detect redundant parentheses and eliminate them, ReSharper knows full well that sometimes you want to keep redundant parentheses so as to clarify the order of precedence, e.g., in logical operations. For this, we have a new setting:

Code style order of precedence

Furthermore, not only is ReSharper smarter in removing the parentheses, it can help you insert those that clarify the operations. This is what the nearby Add parentheses to avoid non-obvious precedence feature is for. First of all, you can specify what operators you want to clarify:

Code style add parentheses to avoid non-obvious precedence

And, with this setting, you can move to an expression, press Alt+Enter and ReSharper will insert the relevant operators for you:

Code style clarify precedence with parentheses

Finally, ReSharper lets you take control of access modifiers: you can now specify whether you want explicit or implicit private/internal modifiers, and you can also control the order of modifiers that you’d prefer to appear next to an identifier:

Code style modifiers order


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Timeline Profiling inside Visual Studio

With each new release, dotTrace deepens its integration with ReSharper and Visual Studio. In doing this, we aim to lower the entry barrier and make profiling easier to use on a daily basis, by moving profiling closer to code. dotTrace 10 has come the farthest in this regard, as this release integrates the entire Timeline Viewer into Visual Studio.

The viewer is represented with the Performance Profiler tool window, exposing functionality that is almost identical to that of its standalone counterpart.

Performance Profiler tool window

What are the pros of using the integrated viewer?

  • First of all, the timeline profiling workflow becomes virtually seamless as you run a session and analyze results right in Visual Studio. You no longer need to switch between the source code and the profiler.
  • The next game changer is the ability to navigate from the call tree to the source code…
    Navigate to code from Performance Profiler
    …and vice versa:
    Navigate from code to Call Tree

In the latter case you not only navigate to Call Tree, but also apply a filter by all method occurrences and their subtrees.

Some differences between the Performance Profiler window and the standalone viewer:

  • With a more compact UI, filters are grouped in a slightly different way.
  • A tiny difference in Call Tree shortcuts is that in the integrated viewer, Enter navigates you to the method declaration.
  • Threads Diagram is not available in the integrated viewer. For thread selection, you can use either the Threads filter or the Threads tool window (for multiple thread selection).
    Threads filter and window

Try the integrated viewer on your own by installing the latest ReSharper Ultimate build and let us know how you like it!

Posted in dotTrace Tips&Tricks, How-To's, ReSharper Tips&Tricks | Tagged , , , , | Leave a comment

Hiring a Developer Advocate for .NET

[NOTE: This call is now closed]

We are looking for someone who

  • Believes in tooling and what we do at JetBrains
  • Is passionate about programming languages
  • Loves teaching, learning, producing content and speaking in public
  • Doesn’t need or like micromanagement
  • Doesn’t mind working from home. Or from an office
  • And last but definitely not least, loves to write code

What we’d need is someone with the following qualities:

  • A Developer, with experience in .NET/C#
  • A Teacher, with experience giving presentations and/or workshops
  • An Author, with experience producing content
  • A Traveler, located in the US*

If you’re up to it, ping me. Let’s have a chat.

*Ideally in the US because we need someone to be more present at events on that side of the pond.

Please don’t leave contact details in comments. 

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Project Rider – A C# IDE

UPDATE: NDC London organizers have kindly uploaded the recording of Project Rider presentation. Enjoy!

UPDATE 2: Make sure to follow Project Rider on twitter to receive further updates promptly.

UPDATE 3: We have opened a form for you to subscribe to take part in Project Rider Early Access Program. To everyone who subscribes, we will be sending links to Project Rider builds as soon as they are ready.

Today, at NDC London, we announced a new project that we’ve been working on for a little while – a cross-platform C# IDE, based on the IntelliJ Platform and using ReSharper technology.

Under the codename Project Rider, the IDE includes a lot of functionality that you are already familiar with from ReSharper and IntelliJ-based IDE’s, such as Quick Fixes, Inspections, and Smart Navigation. And while ReSharper is hosted inside Visual Studio, Project Rider is a full, standalone IDE.

While it’s still quite early, the following features are already available:

Navigation – smart navigation is a major feature of JetBrains IDEs, and Project Rider is no different, offering the standard Go To Type, Go To File, and integrating with IntelliJ Platform’s “Search Everywhere” feature to go to symbols, types, files and even search in settings and actions.

Rider Search Everywhere popup

The Navigate To popup menu is also available, giving access to navigate base/derived symbols in a class hierarchy, or to find usages, with the results displayed in the standard IDE tool window.

Rider Navigate To context menu
Rider Find Usages results

Editing – a wide range of smart editing features are implemented, from typing assist, such as inserting braces and automatic formatting, to Live Templates (including ReSharper 10’s postfix templates), quick info tooltips and gutter icons for inheritance navigation, context actions and so on.

Rider editing

Inspections – most of the inspections supported by ReSharper are displayed as errors, warnings, suggestions and hints in the editor. This includes red code for unresolved symbols, and underline highlights for code issues, and so on.

Rider inspections

Alt+Enter – no JetBrains IDE would be complete without Alt+Enter support, and most of the menu items from ReSharper’s quick fixes and context actions are available. Project Rider also supports applying bulk actions to a whole file, and changing the severity of an inspection directly from the menu.

Rider's Alt+Enter menu

Refactorings – a limited set of refactorings are available. Most refactorings require a user interface of some kind, and these haven’t been implemented yet. Project Rider can rename symbols and introduce/inline variable, as well as rewrite code in response to Alt+Enter on an inspection highlight.

Rider introduce variable

Decompiler – if you try to navigate to a type that you don’t have the source to, we’ll decompile it for you, and display what the C# source would like look.

Of course, as a standalone IDE, it also brings many other features to the table:

  • Multiple runtime support. Project Rider supports the .NET Framework and Mono, with CoreCLR support in the works. It can load MSBuild and Mono XBuild solutions, as well as DNX projects. It also includes templates for creating new projects. And when you create an empty project, it’s really empty!

Rider new project templates

  • Build, run and debug. One of the most important features of an IDE is debugging, and Project Rider is no exception. It can build and run .NET Framework, Mono and DNX projects, and can debug .NET and Mono apps – DNX debugging and CoreCLR support are coming. Any build errors are displayed in a Build tool window, and the Debug tool window is used for call stacks, variables and watch windows.
  • Cross platform. As well as running and debugging multiple runtimes, Project Rider itself runs on multiple platforms. It runs on Windows and Mac OS X (Linux too, but it’s mostly untested right now).

How does it work?

Project Rider is a standalone IDE built on the IntelliJ Platform, much like WebStorm, DataGrip and our other IDEs.

The difference however, is that instead of reimplementing ReSharper’s features on the IntellIJ Platform, which runs on the JVM, we’re using ReSharper in a headless mode, out of process, and communicating with it via a very fast custom binary protocol. As such, the backend continues to be ReSharper written in C# running on .NET or Mono, and the frontend is written in Kotlin, talking to the IntelliJ Platform’s APIs.

We’ll take a more in-depth look at the implementation details in a future blog post.

Why have we created a C# IDE?

Well you kept asking us, so we finally got around to doing it!

Jokes aside though, our main reason is to provide choice. We believe that we can provide a great user experience for developers that might be interested in using alternative environments.

So why now? Because we believe it is the right time due to several factors:

  • We’ve been working for several years in allowing ReSharper to work in different environments, independently of Visual Studio. An example of this is dotPeek.
  • It’s quite clear that there’s an ever increasing tendency of developers using non-Windows platforms, and we’d like to give them the same experience they’ve come to know and love with ReSharper.
  • Finally, Microsoft moving its platform and C# language towards Open Source, along with initiatives such as CoreCLR, have been an added incentive.

What does this mean for ReSharper?

ReSharper is still the number one extension for Visual Studio, and one of our flagship products. The fact that Project Rider is using ReSharper reinforces our commitment to ReSharper, as any updates to ReSharper mutually benefit not only ReSharper but Project Rider also. In addition, we’re hoping some of the work we’ve put into Project Rider can feed back into ReSharper.

In essence, Project Rider will only increase the efforts we put into ReSharper.

What will the licensing model be?

While it’s too early right now to comment on the specific details, the licensing model will be inline with our other products from the JetBrains Toolbox. We will take into account the many usage scenarios that might occur, when establishing pricing, such as someone wanting to use both tools, etc.

We hope to have the pricing information soon.


We’re starting out on the road to 1.0. We’re confident of the architecture, and believe we’ve built a good foundation to implement the features we want to see in a 1.0 release. We’ve got a lot of functionality already implemented, but we’ve still got a lot that we need to build.

We’re aiming to open a private EAP in the coming weeks, towards the end of February. We’ll announce the signup form here on the blog, as well as on Twitter.

Soon after the private EAP we’ll move to a public EAP. When this will happen very much depends on the feedback we get from the early testers. Our aim is to release sometime in Autumn 2016.

We are very excited with Project Rider and hope you share the excitement. If you have any questions, please, ask away. And don’t forget to follow @JetBrainsRider for updates!

P.S. Of course, if you’re at NDC London this week, pop over to the booth and we’ll be happy to show you Project Rider in action!

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Shadow-copying in dotCover: if your NUnit tests fail during continuous testing

When dotCover 10 came out, early users of continuous testing faced a problem: tests that used external files could fail in a continuous testing session while being successful in a ‘normal’ unit testing session. The issue was related to how dotCover worked with unit test assemblies.

To run a continuous testing session in the background, dotCover doesn’t use the original unit test assembly: instead, it creates a copy using the shadow-copying mechanism. Along with assemblies and symbol files, dotCover 10 and 10.0.1 also copied the entire content of the directory where the original assembly was located, be it a default location (e.g., …/bin/Release/) or a custom location specified by the option ReSharper | Options | Unit Testing | Run tests from.

If a unit test works with a file (using its relative path) that is located outside this directory, the test will fail as it looks for the file relative to the new temporary location. For example, the following test (used to process a file in some way) fails in a continuous testing session but passes in a ‘normal’ unit testing session.

Failed test in a continuous testing session

Successful test in a normal session

To address the issue, dotCover 10.0.2 introduced a new option, ReSharper | Options… | dotCover | Continuous Testing | Shadow-Copy.

Shadow-copy option

If this option is set to Assemblies and symbol files, dotCover will copy to a temporary location only assemblies and PDB files without touching other data. In this case, the working directory for tests will be the initial location of test assemblies (e.g., …/bin/Release/). Therefore, the sample test from above will pass successfully in both continuous testing sessions and traditional unit testing sessions.

Successful test in a continuous testing session

However, if All files from the tests start folder is selected, dotCover works as before. It copies the entire content of the tests’ start directory. In this case, the path ..\\..\\Test Files\\1.txt will refer to the new temporary location, causing the test to fail.

IMPORTANT! The Shadow-Copy option works as described ONLY with NUnit tests. All other unit testing frameworks use shadow-copying at their discretion depending on plugin implementation. For example, MSTest may decide to disable shadow-copying in a particular case (regardless of the Shadow-Copy option).

To simplify using continuous testing, you may want to change the way you reference files in tests. Here is a short table showing how you can build paths to the tests working directory. Source here refers to the initial directory where the unit test assembly is located; Temp means the temporary directory where the assembly copy is located.

Assemblies and symbol files All files from the tests start folder
Assembly.GetExecutingAssembly().Location Temp Temp
Assembly.GetExecutingAssembly().CodeBase Source Temp
Environment.CurrentDirectory Source Temp
AppDomain.CurrentDomain.BaseDirectory Source Temp
TestContext.CurrentContext.TestDirectory (NUnit 2.6) Source Temp
TestContext.CurrentContext.WorkDirectory (NUnit 2.6) Source Temp
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End of Year Round up of ReSharper 10 Extensions

With the end of the year just around the corner, ReSharper 10 released less than two months ago, and having just released our second maintenance release, it’s a perfect time to take a look at some of the extensions we’ve got available for ReSharper 10.

ReSharper provides a very rich extensibility platform. It is a very modular application, composing functionality and features via a component container. Extensions can extend existing functionality, such as adding items to the Alt+Enter menu, or new inspections and Quick Fixes, or add new functionality, such as support for new languages, or synchronising settings via DropBox.

We currently have about 60 extensions available in the Extension Manager for ReSharper 10. If you haven’t yet had a look to see what’s available, grab yourself a coffee and we’ll take a wander through some of what’s out there. If you see anything you like, head over to the Extension Manager under the ReSharper menu, and search for the extension you want.


The ZenSharp extension is like ReSharper’s Live Templates on steroids. While Live Templates will expand a static shortcut (like tm) into a code snippet (such as a test method), ZenSharp uses “dynamic” shortcuts to customise the generated snippet.

For example, pc will expand to public class $Name { }, where $Name is a standard Live Template “hotspot” to edit the class name. But pcPerson will expand to public class Person { }.

Similarly, pmSayHello  will expand to public void SayHello() { }. And pmsSayHello will expand to public string SayHello() { }.

The shortcuts are defined to be intuitive mnemonics that can be combined and built up to make it easy and fast to create classes, methods, properties, fields and so on. Standard types can be specified as part of the mnemonic shortcut, and once you’ve mastered it, there’s no faster way to create types and type members.

ZenSharp creating code really quickly

Enhanced Tooltips

The Enhanced Tooltip extension gives ReSharper’s tooltips a facelift. While this doesn’t exactly sound like it’s a big deal, it has a surprising impact – tooltips and parameter info popups in C# are rendered with syntax highlighting, which makes quickly reading parameter lists and method names a whole lot easier.

Furthermore, the tooltips that appear for ReSharper’s inspection warnings and suggestions are also syntax highlighted, with any member names in the message being rendered correctly, and an icon showing what kind of message is being displayed. ReSharper never looked so good!

Enhanced tooltips


Office has it, so why shouldn’t ReSharper? Spelling, that is, and the ReSpeller extension provides just that. It’s available in Free and Pro versions and will look for typos in different languages, such as C#, VB and XML, and even differentiates between identifiers, string literals and comments. For example, you can configure typos in identifiers to be shown as a “hint”, and change typos in comments (such as XML documentation) to be “warning”. And it understands “CamelCasing”, treating “SayHelo” as two words, and finding the typo in “hello”.

It also supports the Alt+Enter menu, offering a Quick Fix to replace the typo, or options to add the word to the user dictionary.

The Pro edition adds extra features, like enabling support for extra languages (such as JavaScript, HTML and Razor), multiple language support and even spell checking directly in the Rename refactoring dialog box!

ReSpeller showing typos


While the StyleCop project itself has stalled, there are still many people using it to maintain a very consistent style when writing code within a team. The StyleCop extension provides as-you-type inspections to highlight when your code doesn’t match the expected style. It also configures ReSharper so that the code ReSharper produces or formats is in the correct style.

We find ourselves in the unfortunate position of having two different StyleCop extensions available in the Extension Manager (it’s a long story, sadly, and we’re working to resolve it). We strongly recommend you use the StyleCop by JetBrains version (search for “StyleCop by JetBrains” in the Extension Manager), as it fixes many issues, including exceptions and memory leaks, and implements improved performance throttling. It also doesn’t need the StyleCop Visual Studio plugin installed.

One thing to note is that StyleCop itself does not support C# 6. The StyleCop engine that the extension uses has a custom C# parser, rather than using ReSharper’s already parsed abstract syntax trees (one cause for performance issues), and due to the project stalling, the parser hasn’t been updated for C# 6. If you’re using Visual Studio 2015 and C# 6, we recommend you use the StyleCopAnalyzers project, which has full support for C# 6, including new rules. When the StyleCop by JetBrains extension sees that StyleCopAnalyzers is installed, it disables its own as-you-type analysis, but still provides code cleanup features and configures ReSharper to match the StyleCop settings.

StyleCop showing warnings

Extra inspections

Some extensions are designed to add new inspections, and we’ll take a look at two – Cyclomatic Complexity and Heap Allocations Viewer.

The Cyclomatic Complexity extension calculates the cyclomatic complexity of a block of code. This is a measurement of how complex your code is, and you should ideally be aiming for a very low figure – the higher the value, the more complex the code, and the harder it is to maintain and understand. The value is always shown in a tooltip, and if it’s over a certain configurable threshold, the method name (or similar) is highlighted as a warning. The extension works with C#, VB, JavaScript, TypeScript and C++.

ReSharper showing high cyclomatic complextity

The Heap Allocation Viewer extension highlights all allocations made by your code. This is an interesting extension, because it doesn’t indicate that anything is actually wrong, but it’s intended to make you aware that an allocation happens here. This is very useful when writing performance critical code, when you really need to keep track of all allocations. While it’s obvious that the new statement will allocate memory, this extension will also highlight less obvious allocations, such as boxing, string allocation, allocations when iterating with a foreach loop, and so on.

Heap allocations viewer showing boxing

Working with open source libraries

While some extensions are designed to provide new functionality across the product (such as improving the editing experience, or more inspections for your code), others are designed for a specific library or framework.

A good example of this is support for AngularJS, parsing your JavaScript code to pull out Angular directives, and add them to your HTML code completion. It will also provide improved code completion for the services and providers injected into controllers and directives.

AngularJS intellisense for injected parameters

Similarly, Unity support provides features for users of Unity 3D. It will mark methods and fields used by Unity as being in use when Solution Wide Analysis is enabled, generate message handlers via the Generate Code command and automatically mark a C# project as C# 5, so ReSharper won’t suggest incompatible C# 6 features when the project is opened in Visual Studio 2015.

Working with commercial libraries

A very nice use of ReSharper extensions is supporting commercial frameworks and products. The team at Trackerbird have done just that, and released an extension that will make it very easy for you to integrate their analysis SDK into your own project. Once installed, this extension adds an item to the ReSharper menu, offering options to set up the SDK in your project, add simple or detailed event tracking code to your project, help you implement checking for updates and so on. It also includes a context action on Application.Run that will add the code necessary to initialise and start activity tracking in your app.

Implement Trackerbird as a context action menu item

Please check out the Trackerbird blog for more details.


ReSharper extensions are not just about custom code adding new items to the Alt+Enter menu, but can also include “external annotations”. These are files that contain annotations for pre-compiled assemblies that in turn provide hints to ReSharper’s inspections, resulting in better analysis for features such as null analysis, string formatting highlighting and telling ReSharper that type members are used externally from the code. Here are some annotations packages:

  • Community External Annotations – this is a nice open source project that maintains annotations for a number of third party libraries, as well as adding extra support for various BCL libraries. You can see the list of supported assemblies in the project readme. Contributions welcome!
  • NLog Annotations – adds null analysis and string formatting highlighting annotations for the NLog framework.
  • Caliburn.Light Annotations – adds annotations for the Caliburn.Light MVVM framework

Live Templates

Alongside external annotations, ReSharper extensions can also include settings files, which are automatically merged into ReSharper’s settings (technically, they override ReSharper’s defaults, and can get overwritten by your own settings). One of the more interesting uses for this is to package up a settings file that contains Live Templates.

There are several such packages available in the Extension Manager, such as:

  • SpecsFor templates for the SpecsFor BDD framework
  • Joar Øyen’s Live Template Macros – adding templates for BDD and a macro that converts a Live Template “hotspot” into a “snake_case_identifier”, such as given_a_new_customer .

Presentation Assistant

This extension is very useful when you find yourself giving a presentation. It will display the name of the last command run, and the keyboard shortcuts used to run it, allowing everyone to follow along with the steps you make as you make them. It shows both ReSharper and Visual Studio commands, and can be enabled from the ReSharper → Tools → Presentation Assistant.

Presentation Assistant showing keyboard shortcuts

It’s also useful for pair programming, to stop the “how did you do that?!” questions as you show off your mad keyboard skillz.

Working with settings files

Two useful extensions for working with settings files are ReSharper Solution Settings Autodiscovery and JetBox.

ReSharper already allows you to share settings files per-solution, by creating a .sln.DotSettings file that lives next to your solution file. But this needs setting up for each solution – what if your team has a number of solutions that you want to work with?

The ReSharper Solution Settings Autodiscovery extension will look for a settings file in each of the parent folders when opening a solution. So if your solution is in C:\projects\team\solution\mySolution.sln, this plugin will look for any file that ends in *.AutoLoad.DotSettings in any of the parent folders – C:\projects\team\solution, C:\projects\team, C:\projects and so on, up to the root of the drive. This is ideal when working on a source control check out that has multiple solutions, and allows you to easily share settings between all of them, and still have the file checked into source control.

The JetBox extension will sync your global settings via DropBox. Simply log in to DropBox via the options page, and the global settings file will be synced whenever there are any changes. And because ReSharper automatically refreshes the settings in any running instances whenever the file changes, you don’t even need to close and reopen Visual Studio for the changes to take effect.

And Finally…

It doesn’t have to be all work and no play. We’ve got a couple of fun extensions too. Check out ReMoji, to add support for JBEvain’s EmojiVS extension to ReSharper’s code completion (make sure you read the instructions for installing first!)

Code completion showing emoji

And of course, who can forget Clippy?


We hope you’ve found this look at some of the extensions available for ReSharper 10 useful. It’s by no means all of the extensions that are out there, so please, have a scroll through the Extension Manager, and see if there’s anything else there that interests you.

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Enters ReSharper Ultimate 10.0.2

Download ReSharper Ultimate 10.0.2, which includes a slew of bug fixes and improvements to ReSharper, ReSharper C++, dotTrace, dotMemory, dotCover and dotPeek.

ReSharper Ultimate 10.0.2

Highlights of this update

  • Unit testing. In addition to support for NUnit 3.0 RTM, unit testing has seen noticeable improvements in terms of support for test cases and grouping, handling of debugging sessions, time spent for setup and teardown code runs. Many presentation glitches in Unit Test Sessions have been fixed as well.
  • Bogus red code. We have fixed incorrectly highlighted red code in solutions containing .modelproj and .wixproj project types, as well as in DNX projects, projects targeting .NET Framework 4.6 and portable libraries.
  • ReSharper Build. There’s an array of improvements in the way ReSharper Build works, notably with regard to monitoring changed dependencies, respecting settings that govern whether to display results upon completing a rebuild, and better support for specifics of Visual Studio 2015.
  • JavaScript and TypeScript. Improvements include a performance tuneup, as well as fixes to incorrect code inspections, usage search and navigation.
  • In other news, Stack Trace Explorer has received a set of fixes; you can now disable ReSharper code tooltip if you prefer how other Visual Studio extensions decorate the tooltip; introducing a variable from inside a lambda expression doesn’t produce broken code anymore; and you can export items from File Structure again!

ReSharper C++, dotCover, dotTrace, dotMemory and dotPeek have received their varying shares of bug fixing in the past month but it’s ReSharper that leads the breed in terms of sheer number of improvements. For your reference, this is how distribution by subsystem looks like for issues fixed in ReSharper 10.0.2:

ReSharper 10.0.2: fixed issues by subsystem

If you’re interested, here’s the entire list of fixes across ReSharper Ultimate products.

Important note to Visual Studio 2015 users

If you have migrated to Visual Studio 2015, please make sure to install VS2015 Update 1. This is especially important if you are experiencing Visual Studio freezes upon starting debugging, pulling from your VCS repository, starting a refactoring, editing XAML in visual mode or in other scenarios described in comments to RSRP-450181. Visual Studio 2015 Update 1 is known to fix a part of MSBuild calls that these freezes are usually traced back to.

Time to download

Upon reading the above, we hope you’re now well prepared to download and install ReSharper Ultimate 10.0.2.

This release wraps up the year for the .NET team here at JetBrains. We’d like to welcome 2016, and we’re hoping to open EAP for a new ReSharper Ultimate release sometime in January.

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Navigating to Source Code from dotMemory

We always look for ways to increase the value of ReSharper Ultimate and synergize our .NET tools. For example, in ReSharper Ultimate 9.2, we made it possible to profile ReSharper’s run configurations, so if you have both dotTrace and ReSharper you can even profile individual static methods in your project.

Now the time has come for dotMemory to get its portion of ReSharper’s functionality. dotMemory always lacked the ability to examine the source code of the profiled application. Just imagine how easier life would get if you could seamlessly continue the investigation of a suspicious object (one that may cause a leak) by examining its source code. Well, starting with dotMemory 10 and ReSharper Ultimate 10, you can!

To navigate to the source code from dotMemory

  1. In Visual Studio, open the solution that you have a memory snapshot for.
  2. In dotMemory, in any view that displays object types, right-click the type you’re interested in.
    Find declaration context menu
  3. In the context menu, select Find declaration (Visual Studio)*. This will open the Find Type Declaration window that lists all found type declarations in running Visual Studio instances.
    * As an alternative to steps 2 and 3, select a type and press Ctrl+L.
    Find type declaration window
  4. Click on the found declaration to navigate to it in Visual Studio.
    Type declaration in VS

After you navigate to any type declaration at least once, the context menu will offer an additional item, Go to declaration (<solution_name>) (also available via the Ctrl+L shortcut). Selecting it instantly navigates you to the type declaration in a specific solution, bypassing the Find Type Declaration window.

Go to declaration context menu

To see for yourself how the feature works, download the latest dotMemory or ReSharper Ultimate. If you have any comments or questions, please feel free to ask in the comments to this post. Your feedback is greatly appreciated!

Posted in dotMemory Tips&Tricks, How-To's | Tagged , , | 1 Comment