On 16th November 2016, Nat Friedman and James Montemagno introduced Visual Studio for Mac, the newest member of the Visual Studio family at Connect(); 2016 event. I thought let's give it a try so I installed the same and went through the project templates available in it. This blog is kind of a getting started guide to install Visual Studio For Mac.
Here are some of the reasons why nullable reference types are less than ideal:
- Invoking a member on a null value will issue a System.NullReferenceException exception, and every invocation that results in a System.NullReferenceException in production code is a bug. Unfortunately, however, with nullable reference types we “fall in” to doing the wrong thing rather than the right thing. The “fall in” action is to invoke a reference type without checking for null.
- There’s an inconsistency between reference types and value types (following the introduction of Nullable<T>) in that value types are nullable when decorated with “?” (for example, int? number); otherwise, they default to non-nullable. In contrast, reference types are nullable by default. This is “normal” to those of us who have been programming in C# for a long time, but if we could do it all over, we’d want the default for reference types to be non-nullable and the addition of a “?” to be an explicit way to allow nulls.
- It’s not possible to run static flow analysis to check all paths regarding whether a value will be null before dereferencing it, or not. Consider, for example, if there were unmanaged code invocations, multi-threading, or null assignment/replacement based on runtime conditions. (Not to mention whether analysis would include checking of all library APIs that are invoked.)
- There’s no reasonable syntax to indicate that a reference type value of null is invalid for a particular declaration.
- There’s no way to decorate parameters to not allow null.
10) Practical .NET: Powerful JavaScript With Upshot and Knockout
The Microsoft JavaScript Upshot library provides a simplified API for
retrieving data from the server and caching it at the client for reuse. Coupled
with Knockout, the two JavaScript libraries form the pillars of the Microsoft
client-side programming model.
9) On VB: Database Synchronization with the Microsoft Sync
Framework
The Microsoft Sync Framework is a highly flexible framework
for synchronizing files and data between a client and a master data store. With
great flexibility often comes complexity and confusion, however.
8) C# Corner: Performance Tips for Asynchronous Development in
C#
Visual Studio Async is a powerful development framework, but it's
important to understand how it works to avoid performance hits.
7) 2 Great JavaScript Data-Binding Libraries
JavaScript
libraries help you build powerful, data-driven HTML5 apps.
6) On VB: Entity Framework Code-First Migrations
Code First
Migrations allow for database changes to be implemented all through code.
Through the use of Package Manager Console (PMC), commands can be used to
scaffold database changes.
5) C# Corner: The New Read-Only Collections in .NET 4.5
Some
practical uses for the long-awaited interfaces, IReadOnlyList and
IReadOnlyDictionary, in .NET Framework 4.5.
4) C# Corner: Building a Windows 8 RSS Reader
Eric Vogel
walks through a soup-to-nuts demo for building a Metro-style RSS reader.
3) C# Corner: The Build Pattern in .NET
How to separate
complex object construction from its representation using the Builder design
pattern in C#.
2) Inside Visual Studio 11: A Guided Tour
Visual Studio 2012
(code-named Visual Studio 11 then) is packed with new features to help you be a
more efficient, productive developer. Here's your guided tour.
1) HTML5 for ASP.NET Developers
The technologies bundled as
HTML5 finally support what developers have been trying to get HTML to do for
decades.
فعالسازی قدم به قدم Roslyn refactoring افزونهی Roslynator
الف) فایل VSIX آنرا از اینجا دریافت کنید و سپس پسوند آنرا به zip تغییر دهید.
ب) این فایل zip را در پوشهای مشخص باز کنید.
ج) پس از باز کردن این فایل zip، دو فایل Roslynator.VisualStudio.Core.dll و Roslynator.VisualStudio.dll آنرا حذف کنید. این فایلها مخصوص نگارش کامل ویژوال استودیو هستند و در صورت وجود، با سیستم بارگذاری افزونههای OmniSharp تداخل میکنند.
د) در آخر مسیر زیر را گشوده:
%USERPROFILE%/.omnisharp
{ "RoslynExtensionsOptions": { "LocationPaths": [ "C:\\lib\\roslynator" ] } }
اکنون اگر VSCode را اجرا کنید، شاهد افزوده شدن امکانات Refactoring مخصوص افزونهی Roslynator به لیست Refactoring پیشفرض OmniSharp خواهید بود:
خودکار سازی دریافت، نصب و فعالسازی Roslyn refactoring افزونهی Roslynator
مراحل فوق را میتوان تبدیل به یک اسکریپت پاورشل کرد که با هر بار اجرای آن، به صورت خودکار کار دریافت و نصب این افزونه صورت گیرد:
Write-Host "Download, unzip and enable Roslynator for Visual Studio Code" $name = "josefpihrt.Roslynator2017" $url = "https://marketplace.visualstudio.com/items?itemName=$name" $currentDir = $PSScriptRoot $file = "$currentDir\Roslynator.zip" $pattern = "<script class=`"vss-extension`" defer=`"defer`" type=`"application\/json`">(.*?)<\/script>" $regex = [regex]"(?m)$pattern" Write-Host "Grab the home page of the $name." $dom = (New-Object Net.WebClient).DownloadString($url); if($dom -and $dom -match $pattern) { $matches = $regex.Match($dom) $jsonText = $matches[0].Groups[1] $json = ConvertFrom-Json $jsonText $version = $Json.versions[0].version # Parse the json in the page for the latest version number $parts = $name.Split(".") $publisher = $parts[0] $package = $parts[1] # Assemble the url for the vsix package $packageUrl = "https://marketplace.visualstudio.com/_apis/public/gallery/publishers/$publisher/vsextensions/$package/$version/vspackage" Write-Host "Download the vsix package: $packageUrl" (New-Object Net.WebClient).DownloadFile($packageUrl, $file) Write-Host "Using $currentDir as the current dir." Write-Host "Unzip $file." $shellApp = new-object -com shell.application $zipFile = $shellApp.namespace($file) $destination = $shellApp.namespace($currentDir) $destination.Copyhere($zipFile.items(), 0x14)# overwrite and be silent Write-Host "Delete VS specific files. Otherwise they will interfere with the MEF services inside OmniSharp." Remove-Item "$currentDir\Roslynator.VisualStudio.Core.dll","$currentDir\Roslynator.VisualStudio.dll", "$currentDir\Roslynator.VisualStudio.pkgdef" $omnisharpJsonFilePath = "$env:USERPROFILE\.omnisharp\omnisharp.json"; Write-Host "Create $omnisharpJsonFilePath file." $omnisharpJson = @" {{ "RoslynExtensionsOptions": {{ "LocationPaths": [ "{0}" ] }} }} "@ -f $currentDir -Replace "\\","\\" $omnisharpJson | Out-File "$omnisharpJsonFilePath" -Confirm Write-Host "Done!" } else { Write-Host "Failed to find the packageUrl!" }
PS D:\Prog\1396\RoslynatorVSCode> .\update.ps1 Download, unzip and enable Roslynator for Visual Studio Code Grab the home page of the josefpihrt.Roslynator2017. Download the vsix package: https://marketplace.visualstudio.com/_apis/public/gallery/publishers/josefpihrt/vsextensions/Roslynator2017/1.7.0/vspackage Using D:\Prog\1396\RoslynatorVSCode as the current dir. Unzip D:\Prog\1396\RoslynatorVSCode\Roslynator.zip. Delete VS specific files. Otherwise they will interfere with the MEF services inside OmniSharp. Create C:\Users\Vahid\.omnisharp\omnisharp.json file. Confirm Are you sure you want to perform this action? Performing the operation "Output to File" on target "C:\Users\Vahid\.omnisharp\omnisharp.json". [Y] Yes [A] Yes to All [N] No [L] No to All [S] Suspend [?] Help (default is "Y"): Done!
در ادامه این افزونه دریافت شده و در پوشهی جاری باز خواهد شد. سپس فایل omnisharp.json نیز به صورت خودکار تشکیل و مقدار دهی میشود.
اکنون اگر VSCode را اجرا کنید، همه چیز آماده بوده و امکانات این افزونه در دسترس خواهند بود.
The Bosque programming language is designed for writing code that is simple, obvious, and easy to reason about for both humans and machines. The key design features of the language provide ways to avoidaccidental complexity in the development and coding process. The goal is improved developer productivity, increased software quality, and enabling a range of new compilers and developer tooling experiences.
.NET 8 Preview 4 is now available and includes many great new improvements to ASP.NET Core.
Here’s a summary of what’s new in this preview release:
Blazor
Streaming rendering with Blazor components
Handling form posts with Blazor SSR
Route to named elements in Blazor
Webcil packaging for Blazor WebAssembly apps
API authoring
Expanded support for form binding in minimal APIs
API project template includes .http file
Native AOT
Logging and exception handling in compile-time generated minimal APIs
ASP.NET Core top-level APIs annotated for trim warnings
Reduced app size with configurable HTTPS support
Worker Service template updates
Additional default services configured in the slim builder
API template JSON configuration changes
Support for JSON serialization of compiler-generated IAsyncEnumerable unspeakable types
Authentication and authorization
Identity API endpoints
Improved support for custom authorization policies with IAuthorizationRequirementData
ASP.NET Core metrics
For more details on the ASP.NET Core work planned for .NET 8 see the full ASP.NET Core roadmap for .NET 8 on GitHub.
When a VM is loaded, it contains
- Windows 10, version 2004 (10.0.19041.0)
- Windows 10 SDK, version 2004 (10.0.19041.0)
- Visual Studio 2019 (latest as of 6/15/20) with the UWP, .NET desktop, and Azure workflows enabled and also includes the Windows Template Studio extension
- Visual Studio Code (latest as of 6/15/20)
- Windows Subsystem for Linux enabled with Ubuntu installed
- Developer mode enabled
Top Issues Fixed in Visual Studio 2019 version 16.4.1
- Fixed "the write operation failed. you must first acquire write access from dataschemamodelcontroller" error trying to publish a database
- Fix ExecutionEngineException exceptions when using SignalR on iOS devices in some configurations
- Runtime Fix "CEE_RET: value type stack" crash when interpreter was enabled with some libraries
- TypeScript 3.7.3 is now included by default, which contains several fixes for issues that effect the JavaScript and TypeScript editing experience.
- May allow mitigation of a Per-Monitor awareness related crash in Visual Studio
Security Advisory Notice
CVE-2019-1486 Live Share extension URL redirection vulnerability