ASP.NET Core WebApi with SQL Server and EFCore 2

ASP.NET Core WebApi with SQL Server and EFCore 2

By : user2187685
Date : November 28 2020, 04:01 AM
I wish did fix the issue. You've got some remnant left from the template for an empty asp core project.
Just remove this entire block, because you don't need it:
code :
app.Run(async (context) =>
    await context.Response.WriteAsync("Hello World!");

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Using EFCore with Identity for Core

Using EFCore with Identity for Core

By : Nitin
Date : March 29 2020, 07:55 AM
will help you For the last few days I've been fighting the Identity system in combination with Entity framework Core. Here's some information prior to revealing my problem: , The simplest way maybe to call UserManger.Users directly. Like this:
code :
ApplicationUser user = await userManager.Users.Include(s => s.Sales).Where(e => e.Email == "t@t.net").FirstOrDefaultAsync();
.NetCore WebAPI methods Async or Not with EFCore query

.NetCore WebAPI methods Async or Not with EFCore query

By : Oli Warms
Date : March 29 2020, 07:55 AM
around this issue The benefits of async/await over regular, synchronized code, is biggest when your server is under heavy enough load that freeing up threads on the thread pool makes a difference. Before then, the overhead of context tracking and switching can easily be bigger than the performance gains of freeing up threads.
I tend to favor using the asynchronous API over the synchronous, mainly because I've been in a few projects where high load and synchronous code was a high enough problem that someone decided it was time to refactor and move to async, and it was a pain every time. It's also becoming more and more common to only expose async API:s (for example, the Azure SDK has many async actions which don't have synchronous counterparts), which means that you might have to perform such a re-write later, if you end up using such an API.
code :
public Task<string> ActuallySynchronousGetter()
    return Task.FromResult("foo");
// note: no async/await, just Task<T>
public Task<string> ForwardingGetter()
     return SomeOtherGetter(); // also with return type Task<string>
public async Task<string> GetStringAsynchronously()
     var str = await SomeOtherGetter();
     return str.Replace("foo", "bar"); // note: we need the actual string here
var data = await repository.Query()
    .Skip((page - 1) * pageSize)
return new OkObjectResult(data);
Autosetting foreign key Ids for child objects in WebApi Rest actions bound for EFCore

Autosetting foreign key Ids for child objects in WebApi Rest actions bound for EFCore

By : Ginger
Date : March 29 2020, 07:55 AM
I hope this helps . I'm a little bit new to Dotnet core WebApi and Entity Framework so forgive me if I'm missing something super obvious. , Option 1
Maybe you should separate API Models and EF Models.
code :
public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
    var results = new List<ValidationResult>();

     // Do validation here, if there are errors add to the results

    return results;
How to cache with EFCore in ASP.NET Core

How to cache with EFCore in ASP.NET Core

By : sfk
Date : March 29 2020, 07:55 AM
wish of those help You can use Response Caching
What type of collection should be returned from EFCore 3.1 in WebAPI?

What type of collection should be returned from EFCore 3.1 in WebAPI?

By : george
Date : September 22 2020, 08:00 PM
it fixes the issue Generally IEnumerable is a good choice to seal the results before send them to the request owner. Thus you can be sure that the collection did not change during the transmission. (by any mid-level function etc.)
IAsyncEnumerable is also a good choice if you are planning to iterate the whole list immediately.
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