Is there a way to use EF with SQL Compact database on the new .NET 5 Windows Framework?
I tried it, but I couldn't make it workable.
Is this library supported in .NET 5?
EntityFrameworkCore.SqlServerCompact40 (looks empty the package folder)
I cannot access to the optionsBuilder.UseSqlCe(#"Data Source=C:\data\Blogging.sdf"); method.
If it is not supported, can I use EF with CE in .NET Core 3.1?
The library only supports EF Core 2.2.
If I get a sponsor I am willing to update.
You can use SQLCE with raw ADO.NET and .NET 5.
See more info here; https://erikej.github.io/sqlce/2020/08/17/netcore-sql-compact.html
Related
Entity Framework Core does not support spatial data, which I need to use in my app.
Can I use Entity Framework 6 in .net core? If so, how can I register DatabaseContext in Startup.cs?
Update
You can now use EF 6.3 with .NET Core 3.0:
https://devblogs.microsoft.com/dotnet/announcing-ef-core-3-0-and-ef-6-3-general-availability/#what-s-new-in-ef-6-3
Below is an excerpt. However, EF Core has come a long way these days and it's worth giving it another go before going back to something that's reaching end-of-life soon. Specifically for your issue, EF Core supports mapping to spatial data types using the NetTopologySuite spatial library since version 2.2.
What’s new in EF 6.3
Support for .NET Core 3.0
The EntityFramework package now targets .NET Standard 2.1 in addition to .NET Framework 4.x.
This means that EF 6.3 is cross-platform and supported on other operating systems besides Windows, like Linux and macOS.
The migrations commands have been rewritten to execute out of process and work with SDK-style projects.
Support for SQL Server HierarchyId.
Improved compatibility with Roslyn and NuGet PackageReference.
Added ef6.exe utility for enabling, adding, scripting, and applying migrations from assemblies. This replaces migrate.exe.
There are certain limitations when using EF 6.3 in .NET Core. For example:
Data providers need to be also ported to .NET Core. We only ported the SQL Server provider, which is included in the EF 6.3 package.
Spatial support won’t be enabled with SQL Server because the spatial types aren’t enabled to work with .NET Core.
Note that this limitation applies to EF 6.3 but not to EF Core 3.0. The latter continues to support spatial using the NetTopologySuite
library.
There’s currently no support for using the EF designer directly on .NET Core or .NET Standard projects.
Original Answer
It isn’t ready yet, but starting with .NET Core 3.0, you will be able to.
https://blogs.msdn.microsoft.com/dotnet/2018/05/07/net-core-3-and-support-for-windows-desktop-applications/
Similarly, EF6 will be updated to work on .NET Core 3.0, to provide a simple path forward for existing applications using EF6.
https://youtu.be/GN54OV5cCBM?t=1146
But there's also EF6, which we've already announced is going to be ported to work on .NET Core...
UPDATE: Yes, EF6 has been cross-platform since version 6.3. https://devblogs.microsoft.com/dotnet/announcing-ef-core-3-0-and-ef-6-3-general-availability/#what-s-new-in-ef-6-3
ORIGINAL ANSWER THAT IS NOW INVALID: No, you can not directly, because EF6 doesn't support .NET Core.
But, you can create another project, that compiles against full .NET framework and use it as a reference.
MS has actually made a decent tutorial for this:
https://learn.microsoft.com/en-us/aspnet/core/data/entity-framework-6#reference-full-framework-and-ef6-in-the-asp-net-core-project
UPDATE: Yes, EF6 has been cross-platform since version 6.3. https://devblogs.microsoft.com/dotnet/announcing-ef-core-3-0-and-ef-6-3-general-availability/#what-s-new-in-ef-6-3
ORIGINAL ANSWER THAT IS NOW INVALID: Like #Niko said, you cannot directly with EF6 but there is a fork that allows it.
Disclaimer: I'm the owner of the project Entity Framework Classic
Entity Framework Classic is an EF6 fork. It's everything you like about EF6, but with better performance, must-have features, .NET Core support, and more.
There is a FREE Community version that includes pretty much everything and an Enterprise version that include additional features.
I have followings projects:
.NET Core 2.0 Web Application
.NET Standard 2.0 Class library &
.NET Framework 4.5 Class Library.
I add reference of .net framework class library to asp.net core web api project. and it seems it works very well.
I am wondering why it's possible to add reference of .NET Framework class library project to ASP.NET Core Web API or MVC?
It's not supposed to allow adding only Standard or Core libraries references to Core projects?
Is this core Web project with .NET Framework class libraries references still cross platform?
UPDATE
According to Phiter comment:
"If you import a .net framework library to your project it'll no longer be cross platform, but you can do it freely if you want to. They allow it because you might want to use .net core and still be on windows."
So if this is a reason, if I want to bind my project to .NET Framework and remain on windows why I use Core Web Project from the first place?
I thought we use core projects for cross platform ability and if not, the .Net framework is not a better option?
UPDATE
mason comment:
"Nothing funny: ASP.NET Core project doesn't have to run on .NET Core. It can also be run on .NET Framework.
Just because it's called 'Core' doesn't mean they're related. They could have called it ASP.NET FancyPants and had it run on .NET Core and .NET Framework and you wouldn't be as confused. Microsoft just sucks at naming things."
UPDATE (November 12, 2018)
A first look at changes coming in ASP.NET Core 3.0 - Fully leveraging .NET Core
As announced on the .NET Blog earlier this month, .NET Framework will get fewer of the newer platform and language features that come to .NET Core moving forward, due to the in-place update nature of .NET Framework and the desire to limit changes there that might break existing applications. To ensure ASP.NET Core can fully leverage the improvements coming to .NET Core moving forward, ASP.NET Core will only run on .NET Core starting from 3.0. Moving forward, you can simply think of ASP.NET Core as being part of .NET Core.
Customers utilizing ASP.NET Core on .NET Framework today can continue to do so in a fully supported fashion using the 2.1 LTS release. Support and servicing for 2.1 will continue until at least August 21, 2021 (3 years after its declaration as an LTS release) in accordance with the .NET Core support policy.
This was just added as part of .NET Standard/Core 2.0. As long as the .NET Framework dll only references things in the .NET Standard, it will use type forwarding to the .NET Core implementations.
I do not know what made Microsoft allow referencing .net framework class library into .net core project but as a programmer, I am happy with this allowance.
You see allowing .net core application to reference .net framework libraries is useful in case you want to start with windows and are planning to go cross platform in the future.
We are in a stage where many useful open source libraries do not fully support .net core till the date of this post, masstransit is an example, so when I am developing a new software I will be using .net core project that depends on such libraries and I will update them later when they support .net core.
I am able to add EntityFramework to ASP.NET Core application that runs on top of .NET Framework (not on .Net Core). The CR operations are working fine, but not able to enable migration since I am using Code First approach. But as per the link
Limited support for EF6 in ASP Net Core
there are some limitations. Is there any work around for this to make happen?
Any help would be deeply appreciated.
Thank you
There is a third party tool that enables EF 6 Migrations with .NET Core https://github.com/mrahhal/Migrator.EF6
More information about EF6 with ASP.NET Core here: https://learn.microsoft.com/en-us/aspnet/core/data/entity-framework-6
Can I use Linq to SQL in asp.net 5 mvc 6?
There is no "Linq to SQL Classes" in "Add New Item" form
I know its not supported in dot net core 5 but I don't need dnx core 5 and cross platform feature. I'm ok with dnx core 4.5.1
How can I add Linq to SQL Classes file (.dbml) to MVC 6 Project?
To add Linq To SQL Classes file, you have to add Class Library project to your solution. Now you can add Linq to SQL Classes (.dbml file) to this project.
Then add reference to this Class Library from your main project.
NOTE: you can not use dnxcore 5 in this way. Your main project should use dnx 4.5.1 and class library should use dotNet framework 4.5.1 as target framework.
To solve this problem, in VS just go to Tools - Get tools and features - Individual components - Select LINQ to SQL tools and then click on Modify.
Using .NET Framework 4.5 in VS2015 one has the ability to add an ADO.NET Entity Data Model but the option does not seem to exists with .NET Framework 4.6. I've reviewed the release notes but there does not seem to be any mention of a new approach so any hint would be helpful.