P3.NET

Writing a Context Provider for CodeRush for Roslyn

Several years ago I wrote an article about creating a custom context provider for CodeRush. In that time CodeRush Classic, as it is called, has been replaced by CodeRush for Roslyn which relies on Roslyn. Now seems like a good time to update the provider. Rather than having to read both articles I’m going to repost the old article with updated changes for Roslyn. The code is semantically similar but had to be rewritten to use Roslyn.

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Updated Visual Studio Templates for VS 2017

Now that VS 2017 is ready it is time to update the template extensions I provided for previous Visual Studio versions. However this time the templates themselves don’t really need to change. Instead the VS extension that I wrote to wrap them needs to be updated to take advantage of the newer VS extension features.

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Custom Naming Styles in Visual Studio 2017

One of the great new features in Visual Studio 2017 is the ability to define naming rules for code and then let the IDE notify you when they are violated. Depending upon what options you choose the IDE can suggestion, warn or flat out fail compilation because of violations. In this release the options are limited but since the rules are using Roslyn, the options can only improve in later releases.

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Identifying Slowdown in Visual Studio 15 Preview 5

As Visual Studio has become more extensible there are more and more extensions that developers like to install. Unfortunately not all of them are well behaved. The more extensions you install the more likely VS will crash or slow down. When this happens most people tend to go to the forums and complain about VS bugs and/or performance. Yet the culprit is likely an extension. Up until VS 15 preview 5 there has been no easy way to diagnose this. Generally, when responding to a forum post, a user is recommended to run in safe mode to eliminate the chance that it is an extension. But doing this doesn’t really help narrow down the problem that much because: 1) the problem may not occur very often and 2) many extensions are critical to doing real development. In VS 15 Microsoft has finally added some performance monitoring to VS. VS has had perf monitoring for a while but none of that was visible to the average user. In VS 15 you can now go to Help\Manage Visual Studio Performance and get a window that provides some basic information about extensions and tool windows, the two most likely causes of a slowdown. This window allows you to see if an extension or window is slowing things down. If so then you can disable it and report the issue to the author. Hopefully this will cut down on forum posts but we’ll have to see how this feature evolves until release.

VSHost Bug is Squashed

Way back in Visual Studio 2005 Microsoft added a new debugger host, VSHost. The purpose, as advertised, was to speed up debugging by taking the hit for starting a debug session. The idea was that the host was started when you first began debugging and continued to run until you closed VS. This allowed VS to keep debugging information cached which sped up repeated runs of the debugging session. It only worked for managed applications but, for the time, greatly increased debugging startup. But there were problems with this approach. Firstly was that some apps simply didn’t work correctly with it. Microsoft provided a project debug setting that allowed you to disable the host in this case. Secondly it mucked with the whole debug process because VS started the host which emulated your process (it even had a config that matched your config). Thirdly, since it was a separate process, it would occasionally stop responding or crash which caused issues with the debugger. Starting with VS 15 preview 5, the VS host process is gone. Microsoft has wisely optimized debugging startup times making the need for this process mute. So now running your app in the debugger is going to behave more naturally and, in theory, VS shouldn’t run into any more issues of disconnected processes. You can read more about this decision here.here

Light Switch Is Off (Deprecated)

As part of the Visual Studio 15 preview 5 release, Microsoft has announced that Lightswitch is officially deprecated. VS 15 will not ship with it. Microsoft is recommending that everyone switch to PowerApp or equivalent. Note however that Microsoft will continue to provide security fixes and support existing Lightswitch apps for the foreseeable future. However Microsoft does not recommend any new development use Lightswitch. Read the full announcement here.here

.NET Core 1.0.0 VS 2015 Tooling Preview 1 Uninstall

With the recent announcement that .NET Core 1.0.0 is officially released, Microsoft also announced that Preview 2 for .NET Core 1.0.0 is available. However to install it you must first uninstall Preview 1 if you have it installed. The issue is that to uninstall you have to have the original setup program. If you go to any current links they will take you to the Preview 2 installer so you are in a catch-22. Fortunately Barry Dorrans tweeted a link to the Preview 1 installer here. So if you need to uninstall Preview 1 first then use that link to get the installer. I also recommend that you keep the Preview 2 installer around for the inevitable uninstall later.

T4 Templates Update for Visual Studio 2015

A while back I posted a series of articles on how to use T4 and a custom VS extension to simplify some common code like application settings, WCF clients and environmental transforms. With the release of Visual Studio 2015 I had to update my own extension and templates so I wanted to posted a follow up article on the changes that need to be made to allow the extension to work with Visual Studio 2015. As part of the update I added some functionality to the app settings template. Before continuing be sure to download the previous version of the series (or simply download the final version below).

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Visual Studio 2015 RC NuGet Package Bug

UPDATE: NuGet Package Manager 3.1 has been released to Visual Studio Gallery. It resolves the issue mentioned here.

For those of you using the Visual Studio 2015 RC/RTM release you should be aware of a bug in the version of NuGet that ships with it. The bug manifests itself when building or debugging a project. When you first start VS the package is fine and you can go to ToolsOptionsNuGet Package Manager and adjust settings. Clearly the package has been successfully loaded. But when you start to build the project (or start to debug which triggers a build check) then VS may report that the package failed to load.

The problem is that NuGet is attempting to update the nuget.config file to a new version and the file is read only causing the package to fail. The file can be read only for a number of reasons but the most likely case is when you are using source control (like TFS) and the file is checked in. The bug has been reported to NuGet and appears to be resolved in future versions.  For now the workaround, if you encounter this issue, is to simply modify the nuget.config file to not be read only (or check the file out of source control) so that the update can succeed.

C# v6 Features–Nameof Operator

One of the cool new features coming in C# v6 is the nameof operator. This handy little operator solves a common code smell, string literals for programmatic items. Let’s take a simple example.

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