Questions tagged [asp.net-core-3.0]
Use this tag for questions specifically related to ASP.NET Core 3.0, in addition to using the 'ASP.NET Core' tag.
asp.net-core-3.0
214
questions with no upvoted or accepted answers
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ASP.NET Core 3.0 - Cannot access a disposed object. Object name: 'IServiceProvider'
We have windows service that hosts web api and does some calculation job in background.
From time to time we get exception:
2019-12-27 11:49:15.525 +01:00 [Error] [Serilog.Log.Write] Unhandled ...
7
votes
0
answers
1k
views
Disable System.Text.Json on Web API on .NET Core 3.0
I would like explicitly use legacy Newtonsoft.Json library for serialization/deserialization on .NET Core Web API 3.0.0. No mater what I do, always System.Text.Json is involved and custom Newtonsoft's ...
- 591
6
votes
1
answer
2k
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.NET Core 3.0 Web Api Dictionary Key CamelCase Issue
I have a .NET Core Web Api which I recently migrated from version 2.2 to version 3.0. I have a route/method in one of my controllers that returns a Dictionary. The issue I am now having is that when ...
- 525
6
votes
0
answers
332
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ASP.NET Core 3.0 Web API with minimal footprint
I want to create an ASP.NET Core 3.0 Web API with a minimal footprint in terms of published size and RAM consumption. CPU consumption doesn't seem to be that much of a problem, and the number of calls ...
- 2,302
5
votes
1
answer
3k
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.NET Core 3.0: ASPNETCORE_ENVIRONMENT has value Development on publish
I tried to migrate my ASP.NET Core 2.2 project to the newly released ASP.NET Core 3.0 over the weekend.
Everything looked good in the local environment, but after publishing and deploying to IIS, I ...
- 2,200
5
votes
1
answer
2k
views
Return html as string from rendered/processed Razor Page in Class Library in Core 3
I have a solution with a few projects, where one of them is an Azure Function App, which calls a method in a .Net Core Class Library that is responsible for generating HTML that I can use with the ...
- 506
4
votes
1
answer
4k
views
How can I resolve a registered Dependency from an Autofac Container in .NET Core 3.1
There's a project I'm trying to upgrade to .NET Core 3.1 from 2.2. My major issue is at the startup.cs where I'm registering dependencies with Autofac. I have studied the documentation for registering ...
- 1,158
4
votes
1
answer
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Alternative code for services.BuildServiceProvider (in ConfigureServices) when migrating from ASP.NET Core 2.2 to 3.1
I have modular ASP.NET Core application. Back in the day of .NET Core 1.1 I build services (AddScoped, AddSingleton ...) in public void ConfigureServices(IServiceCollection services) method like this:
...
- 10.2k
4
votes
4
answers
7k
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Exception while executing Azure function v2 with aspnetcore3 - The system cannot find the file specified. System.Private.CoreLib
I am using .net Core 3 with Azure function version 2 (Visual studio 2019 with .net framework 4.8).
While executing the function below exception occours :
System.Private.CoreLib: Exception while ...
- 163
4
votes
0
answers
946
views
How to customize URL of webpage in Asp.NET Core Identity UI 3.0.0
I am using .NET Core 3.0.100, Blazor Server web-app, has these packages of Identity
<PackageReference Include="Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore" Version="3.0.0" />
<...
- 50.8k
3
votes
0
answers
1k
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Why I can't reach HandleAuthenticateAsync in my custom JwtBearerHandler without producing an exception?
I'm trying to implement a custom JWTBearerHandler for authorizing some requests in my API, due to I need to inject a custom token validator I've made.
So, I did implement AuthenticationHandler based ...
3
votes
0
answers
3k
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Oauth2 with Postman and IdentityServer4
I'm trying to register authenticate with Postman on my Identity Server 4. It worked with .Net Code 2 but I recently updated to .Net Core 3 and did adaptations. I can open my login page, I can login ...
- 18.2k
3
votes
0
answers
919
views
Is there an alternative to StringEnumConverter in .Net Core 3?
In .net core prior to version 3 there when Newtonsof.Json was used there was a possibility to inherit from StringEnumConverter to add additional validation or a custom error message for the process of ...
- 29.5k
3
votes
1
answer
2k
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Application Insights Telemetry Missing in .Net Core 3 app Running in Docker Container
We have a small API hosted in AKS which was written using .Net core 2.2. It has been working fine and we have seen all our App Insights telemetry in the Azure portal, both in Live Metrics and Log ...
- 2,033
3
votes
1
answer
1k
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Is that possible to publish ASP.Net Core 3.1 web application as a Single File
I know that we are able to publish .Net Core 3.x console applications as a self-contained, singlefile. But is it possible to publish web application as a single file?
I tried to use
<...
- 1,664