aspnetcore | NET Core is a cross-platform .NET framework
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kandi X-RAY | aspnetcore Summary
ASP.NET Core is a cross-platform .NET framework for building modern cloud-based web applications on Windows, Mac, or Linux.
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License : Strong Copyleft (CC BY-SA 4.0)
Copyimport {
JsonHubProtocol,
HttpTransportType,
HubConnectionBuilder,
LogLevel,
} from '@microsoft/signalr';
import actionTypes from '../actions/actionTypes';
const startSignalRConnection = (connection) =>
connection
.start(public stopConnection = (): void => {
if (this.hubConnection) {
this.hubConnection.stop();
}
};
private connectionHubClosed(): void {
//trigerred when lost connection with server
alert('tservices.AddHostedService();
public sealed class SignalRService : BackgroundService
{
///
/// Executes the background service.
///
///
/// The cancellation token. This token signals that the import { Injectable } from '@angular/core';
import * as signalr from '@microsoft/signalr';
@Injectable({
providedIn: 'root'
})
export class NotificationService {
private hubConnection: signalr.HubConnection;
public startConnectionvar token = "eyJ";
hubConnection = new HubConnectionBuilder()
.WithUrl($"{Configuration["Url"]}/chathub?access_token={token}")
.Build();
services.AddAuthentication(options =>
{
// Identity made Cook public void ConfigureServices(IServiceCollection services)
{
services.AddRazorPages();
services.AddSignalR();
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipelsignalR.HubConnectionBuilder
signalR.JsonHubProtocol
signalR.LogLevel
import * as signalR from '@aspnet/signalr';
import { HubConnectionBuilder, JsonHubProtocol, LogLevel } from '@aspnet/si public class NotificationHub : Hub
{
public static void Send()
{
IHubContext context = GlobalHost.ConnectionManager.GetHubContext();
context.Clients.All.displayStatus();
}
}
public class Startup
{
private readonly Container container = new Container();
public Startup(IConfiguration configuration) => Configuration = configuration;
public IConfiguration Configuration { get; }
public void Confconstructor(props){
super(props);
this.messageReceived=this.messageReceived.bind(this); // <========== **Important**
this.sendPrivateMessage=this.sendPrivateMessage.bind(this); // <========== **Important**Community Discussions
Trending Discussions on aspnetcore
QUESTION
I used the database first approach. The model is right (or at least it looks like) But I always get this error. Please, I've already tried so many things.. The full code of my program (and even sql script by which I create my database) is here: https://github.com/AntonioParroni/test-task-for-backend-stack/blob/main/Server/Models/ApplicationContext.cs
Since I have a mac. I created my model with dotnet ef cli commands (dbcontext scaffold) I can use my context. But I can't touch any DbSet..
...ANSWER
Answered 2022-Mar-31 at 09:23You have net6.0 target framework which is still not released while you have installed EF6 which is a previous iteration Entity Framework (mainly used with legacy .NET Framework projects) and you also have EF Core (a modern iteration of it) but older version - 5.0 (which you are actually using for your context, see the using Microsoft.EntityFrameworkCore; statements there).
Try removing EntityFramework package and installing preview version of Microsoft.EntityFrameworkCore.SqlServer (possibly just updating to the latest 5 version also can help) and either removing completely or installing preview version of Microsoft.EntityFrameworkCore.Design. (Also I would recommend to update your SDK to rc and install rc versions of packages).
Or try removing the reference to EntityFramework (not Core one) and changing target framework to net5.0 (if you have it installed on your machine).
As for why do you see this exception - I would guess it is related to new methods added to Queryable in .NET 6 which made one of this checks to fail.
TL;DR
As mentioned in the comments - update EF Core to the corresponding latest version (worked for 5.0 and 3.1) or update to .NET 6.0 and EF Core 6.
QUESTION
ANSWER
Answered 2022-Feb-07 at 08:13I got the solution
I created this Custom DocumentFiler thats sorts the Tags
QUESTION
After updating the package Microsoft.AspNetCore.Authentication.JwtBearer from version 3.1.14 to 6.0.1, requests with authentication fail with 401 Unauthorized "invalid token".
What needs to be changed with the new package version?
...ANSWER
Answered 2022-Jan-20 at 13:18This seems to be a bug. Adding an event handler (JwtBearerEvents), the failure could be identified as a MissingMethodException:
QUESTION
When I publish my ABP project I get the following error:
...ANSWER
Answered 2022-Jan-13 at 21:59Issue:
The issue raises after .NET 6 migration. There's a new feature that blocks multiple files from being copied to the same target directory with the same file name. See https://docs.microsoft.com/en-us/dotnet/core/compatibility/sdk/6.0/duplicate-files-in-output
Solution #1 (workaround):
You can add the following build property to all your publishable (*.Web) projects' *.csproj files. This property will bypass this check and works as previously, in .NET5.
QUESTION
I got up and running with Visual Studio 2022 Preview for a couple of days now.
Got the first shock, there is no Startup.cs. Thats ok, a bit of reading, I know Startup is removed.
Today got another slap. I see no using statements. Here it is.
I just created a brand new .NET 6 web app and as I hover over the WebApplication class, I realized it stays in Microsoft.AspNetCore.Builder namespace. And the generated Program.cs class looks like this.
So where is the using Microsoft.AspNetCore.Builder; statement?
Whats the magic? Why is .net becoming mystical by the day?
The full Program.cs file is as follows.
...ANSWER
Answered 2022-Mar-15 at 17:03C# 10.0 introduces a new feature called global using directive (global using ;) which allows to specify namespaces to be implicitly imported in all files in the compilation. .NET 6 RC1 has this feature enabled by default in new project templates (see enable property in your .csproj).
For Microsoft.NET.Sdk.Web next namespaces should be implicitly imported (plus the ones from Microsoft.NET.Sdk):
- System.Net.Http.Json
- Microsoft.AspNetCore.Builder
- Microsoft.AspNetCore.Hosting
- Microsoft.AspNetCore.Http
- Microsoft.AspNetCore.Routing
- Microsoft.Extensions.Configuration
- Microsoft.Extensions.DependencyInjection
- Microsoft.Extensions.Hosting
- Microsoft.Extensions.Logging
UPD
To address your questions in comment:
At the moment of writing the generated file containing default imports will be inside the obj folder named something like ProjectName.GlobalUsings.g.cs.
To modify default imports you can add Using element to your .csproj file. Based on exposed attributes it allows several actions including addition and removal:
QUESTION
I am working through the Microsoft Learn tutorials to "Create a web API with ASP.Net Core".
Under the heading, "Build and test the web API", at instruction (5) I am getting a response, "Unable to find an OpenAPI description".
For step (6) when executing the "ls" command I get the response, "No directory structure has been set, so there is nothing to list. Use the 'connect' command to set a directory structure based on an OpenAPI description". I have tried the "connect" command suggested here and have tried "dir" as an alternative to "ls".
I can successfully change directories in step (7) and execute the GET request for step (8) and receive the expected reply. However, it really bothers me the "ls" command is not working here and seems like an important function of the httprepl tool.
How can I get the "ls" command to work here or tell me why does it not work?
...ANSWER
Answered 2021-Nov-23 at 00:52In step 5 HttpRepl emits the warning Unable to find an OpenAPI description, which means that it can't find the swagger endpoint, and therefore the ls command wont work.
I assume you are using VS Code and ASP.NET Core 5.0. Here is my output from running dotnet --version:
QUESTION
In earlier versions, we had Startup.cs class and we get configuration object as follows in the Startup file.
...ANSWER
Answered 2021-Oct-26 at 12:26WebApplicationBuilder returned by WebApplication.CreateBuilder(args) exposes Configuration and Environment properties:
QUESTION
I'm using Asp.Net Core Web Api 6
I'm facing an error when migrating my DbContext and when updating the database
The Error
...ANSWER
Answered 2022-Mar-03 at 15:46Add try/catch similar to the above around IHostBulder.Build() in any .NET/EF Core 6.0 RC2 project, and attempt to add a migration can reproduce the issue.
We can fix the issue with the following :
QUESTION
If I create a new Blazor WASM app, out of the box I can use Hot Reload by running dotnet watch run in a terminal window. This will launch a browser window, and any changes I make will update in the browser automatically.
However, if I start my app in Visual Studio with the debugger attached (F5), I don't get any hot reload functionality. When I make a change, Visual Studio shows a message in the bottom left that says Code Changes were applied successfully, but the browser does not refresh. If I refresh the browser manually, I still do not see my changes.
I have "Hot Reload on Save" checked. Pressing the new Hot Reload button doesn't seem to do anything.
The browser refresh script is injected into my html.
I am using Visual Studio 2022 Version 17.0.0 Preview 7.0, and dotnet 6 RC 2 (6.0.0-rc.2.21480.10).
Is it not possible to use Hot Reload while debugging a Blazor WASM app, or am I missing something?
...ANSWER
Answered 2022-Mar-02 at 17:39This bug has been fixed as of version 17.1 of Visual Studio 2022.
PosterityThis feature is currently unsupported when using the debugger in WebAssembly apps. According to Microsoft:
*In Visual Studio 2022 GA release Hot Reload support for Blazor WebAssembly when using the Visual Studio debugger isn’t enabled yet. You can still get Hot Reload If you start your app through Visual Studio without the debugger, and we are working to resolve this in the next Visual Studio update.
According to Microsoft, this will be fixed in the 17.1 release of VS 2022.
The fix will be included in the 17.1 release.
The latest preview version of Visual Studio 2022 (17.1.0 Preview 2 released Jan 5, 2022) contains the fix for this. I tested this personally and verified it's working. Note that you will still need to wait for 17.1 if you don't want to use the preview channel.
QUESTION
Before I start, I've tried all suggestions from the following and none work:
Integration testing ASP.NET Core with .NET Framework - can't find deps.json
https://zimmergren.net/unable-to-find-deps-json-dotnet-azure-devops/
So I'm trying to write some integration tests for dotnet 6. However, my WebApplicationFactory throws the following error:
System.InvalidOperationException: Can't find '/repos/subscription-info-api/tests/SubscriptionInfoApi.Tests.Integration/bin/Debug/net6.0/...
System.InvalidOperationException Can't find '/repos/subscription-info-api/tests/SubscriptionInfoApi.Tests.Integration/bin/Debug/net6.0/testhost.deps.json'. This file is required for functional tests to run properly. There should be a copy of the file on your source project bin folder. If that is not the case, make sure that the property PreserveCompilationContext is set to true on your project file. E.g 'true'. For functional tests to work they need to either run from the build output folder or the testhost.deps.json file from your application's output directory must be copied to the folder where the tests are running on. A common cause for this error is having shadow copying enabled when the tests run. at Microsoft.AspNetCore.Mvc.Testing.WebApplicationFactory
1.EnsureDepsFile() at Microsoft.AspNetCore.Mvc.Testing.WebApplicationFactory1.EnsureServer() at Microsoft.AspNetCore.Mvc.Testing.WebApplicationFactory1.CreateDefaultClient(DelegatingHandler[] handlers) at Microsoft.AspNetCore.Mvc.Testing.WebApplicationFactory1.CreateDefaultClient(Uri baseAddress, DelegatingHandler[] handlers) at Microsoft.AspNetCore.Mvc.Testing.WebApplicationFactory1.CreateClient(WebApplicationFactoryClientOptions options) at Microsoft.AspNetCore.Mvc.Testing.WebApplicationFactory1.CreateClient() at SubscriptionInfoApi.Tests.Integration.UnitTest1.Test1() in /repos/subscription-info-api/tests/SubscriptionInfoApi.Tests.Integration/UnitTest1.cs:line 14 at SubscriptionInfoApi.Tests.Integration.UnitTest1.Test1() in /repos/subscription-info-api/tests/SubscriptionInfoApi.Tests.Integration/UnitTest1.cs:line 16 at Xunit.Sdk.TestInvoker1.<>c__DisplayClass48_0.<b__1>d.MoveNext() in /_/src/xunit.execution/Sdk/Frameworks/Runners/TestInvoker.cs:line 264 --- End of stack trace from previous location --- at Xunit.Sdk.ExecutionTimer.AggregateAsync(Func1 asyncAction) in //src/xunit.execution/Sdk/Frameworks/ExecutionTimer.cs:line 48 at Xunit.Sdk.ExceptionAggregator.RunAsync(Func`1 code) in //src/xunit.core/Sdk/ExceptionAggregator.cs:line 90
My actual test code is extremely simple:
...ANSWER
Answered 2021-Nov-18 at 21:03You are probably targeting the wrong namespace for Program in your test file (like I was).
I had to add the following at the end of my Program.cs file (last line) to make it visible to my test projects needing it:
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