از Net 3. به بعد به جای واسط IHostingEnvironment از IHostEnvironment استفاده شود.

اطلاعات بیشتر ( + )

IHostingEnvironment  is one of the most annoying interfaces in .NET Core 2.x, because it exists in two different namespaces,  Microsoft.AspNetCore.Hosting  and  Microsoft.Extensions.Hosting . These are  slightly  different and are incompatible - one does not inherit from the other.

Porting existing code to .NET Core used to be quite hard because the available API set was very small. In .NET Core 2.0, we already made this much easier, thanks to .NET Standard 2.0. Today, we’re happy to announce that we made it even easier with the Windows Compatibility Pack, which provides access to an additional 20,000 APIs via a single NuGet package. 

<ItemGroup>
    <PackageReference Include="Inferno" Version="1.4.0" >
       <NoWarn>NU1701</NoWarn>
   </PackageReference> 
</ItemGroup>

The specified framework 'Microsoft.NETCore.App', version '1.1.2' was not found.

"program": "${workspaceRoot}/src/ASPNETCoreIdentitySample/bin/Debug/netcoreapp2.0/ASPNETCoreIdentitySample.dll",

وقتی Visual Studio 2019  را نصب میکنید به طور پیش فرض Core 2 را دارا هست اما نسخه dote net core 3 را ندارد. برای نصب dot net core 3 ابتدا  SDK مربوطه را دانلود کنید. تا این لحظه آخرین نسخه dotnet-sdk-3.0.100-preview7-012821 می‌باشد. ممکن است برای شما نسخه جدیدتری آمده باشد. سپس آن را نصب کنید و چون نسخه  preview هست باید در visual studio 2019 آن را فعال کنید. در نسخه‌های قدیمی‌تر ویژوال استدیو 2019 ابتدا از منوی Tools مسیر زیر را دنبال کنید:

سپس تیک مربوط به Use preview of the .NET Core SDK را قرار دهید. چنانچه این گزینه را نداشتید از مسیر زیر استفاده کنید:

حال تیک مربوط به Use preview of the .NET Core SDK را بزنید.

اکنون میتوانید پروژه خود را اجرا کنید.

How to make the fastest .NET Serializer with .NET 7 / C# 11, case of MemoryPack 

How to convert class library that is targeted WPF to .NET Core 3.0 from .NET Framework 

Full Stack ASP.NET Core 2.0 MVC Forum Build

Topics Covered:
- Setting up a new ASP .NET Core 2.0 MVC web application with Identity user authentication in Visual Studio
- Separating Web, Services, and Data Access Layers in our solution
- Setting up tests with NUnit and .NET Core virtual in-memory database
- Debugging / Fixing bugs
- Implementing the MVC (Model-View-Controller) pattern
- Dependency Injection of Services into our Controllers
- Using input forms to pass data from our Views to our Controllers
- Azure file storage for Profile Image uploads
- Azure SQL database hosting
- SQL Database seeding for starting the application with a super-user
- Code-first database migrations
- Writing SQL queries to inspect data in our database
- Deploying the application to Azure.
 

The desktop is here to stay. Sam Basu reviews how you can take advantage of the latest in .NET technologies and still build the apps your customers demand. 

Sam covers Windows Forms, XAML (UWP, WinUI), Progressive Web Apps, Electron, Blazor Mobile Bindings, .NET MAUI and building for Mac OS and Linux.  

Description