Using Entity Framework Core 3.1 with UseInMemoryDatabase option in ServiceProvider ( Scoped lifetime )
I have migrated a web application project from .NET Core 2.1 to 3.1 (also EF Core from 2.1.1 to 3.1.0). After the migration, some unit tests are not working anymore, throwing duplicate keys db except...
- Modified
- 8 Jan at 18:5
How to get and inject the IHostApplicationLifetime in my service to the container (Console App)
Following this [answer](https://stackoverflow.com/a/55960329/375460), I want to inject the `IHostApplicationLifetime` in my class to shutdown properly when the method `StartAsync` is over. But I don'...
- Modified
- 8 Jan at 16:37
Android Studio (not installed) , when run flutter doctor while Android Studio installed on machine
When I run flutter doctor command on mac its showing below, while I already install Android Studio, and I can run ios build from Android Studio. flutter doctor output: ``` Doctor summary (to see a...
- Modified
- 6 Sep at 13:12
Deserialize json one record at a time
I am working with large json files and memory is a concern. I would like to read one object into memory at a time from file. Is this possible? In ServiceStack.Text docs it says there is an API usin...
- Modified
- 8 Jan at 14:14
Using Autofac with ASP.Net Core 3.1 generic host "Worker Service" application
In an ASP.Net Core application, its easy to configure Autofac using: But in a generic host, the **Worker class** does not have any built in support for `ConfigureServices` and `ConfigureContainer`. Ho...
- Modified
- 5 May at 15:47
Unable to consolidate NuGet package transitive dependency versions in two NET Standard projects
I have a solution with multiple .NET Standard 2.0 projects. One uses the `Google.Protobuf (3.11.2)` NuGet package, that depends on ``` System.Memory (4.5.3) System.Buffers (4.4.0) System...
- Modified
- 10 Jan at 11:47
ServiceStack's HttpResult class does not properly format CSV files
I am trying to output a CSV file using an endpoint on a service in ServiceStack, using the HttpResult class. The CSV string itself is being constructed via StringWriter and CsvHelper. If the content...
- Modified
- 8 Jan at 02:45
How to avoid violating the DRY principle when you have to have both async and sync versions of code?
I'm working on a project that needs to support both async and sync version of a same logic/method. So for example I need to have: ``` public class Foo { public bool IsIt() { using (var co...
- Modified
- 7 Jan at 23:54
C# worker service vs windows service
What is the big difference between the and the and which is better to use? When can I use a worker service & windows service?
- Modified
- 7 May at 09:27
Blazor get div position / coordinates
I'm creating a popup component and I want this to be movable. I can move it using the top / left style, but for now they are init to `top:0;left:0;` and so the popup appear on the top left corner of t...
- Modified
- 7 Jan at 16:50
Simultaneous IIS .NET web service calls gets wrong user context after returning from a subroutine
Thanks to some extensive logging I added to our IIS/Servicestack/.NET Web API for a different problem I found some very troubling behavior while looking into a reported issue. Keep in mind that when ...
- Modified
- 7 Jan at 20:37
Change visibility of nav item in blazor menu
I'm using Blazor with .NET Core 3.0. I want to show a login in my menu, when the user isn't logged in yet. When he is logged in, then the login nav item should be hidden. How can I do this? EDIT: I c...
- Modified
- 8 Jan at 07:33
Is there any difference in behaviour between auth/credentials and auth/basic?
We have two separate websites which essentially share the same UserAuth data store. We want to provide the user with a link from one to the other without requiring them to login again. At the moment ...
- Modified
- 7 Jan at 11:22
Entity Framework Core 3.1 Return value (int) from stored procedure
this returns -1, how can i get the actual return value from stored procedure? here is my stored procedure ``` ALTER PROCEDURE [Production].[Select_TicketQuantity] @Ticket NVARCHAR(25), @Refe...
- Modified
- 7 Jan at 08:30
How can I make my app send out notifications when it's loaded but not running in the foreground?
I have an app that I use sometimes. I must have left it there in the background before I slept. When I woke up I saw this notification on my screen. [](https://i.stack.imgur.com/MIIVh.jpg) Does an...
- Modified
- 13 Jan at 22:1
How do I execute a raw SQL query to a custom object in Entity Framework Core 3.1, without migrations wanting to create a table?
I'm querying a `Store` table to show the user the 10 closest `Store`s. I'd like to display the `Name` and `Distance` of the `Store`, but prefer to keep distance in a custom entity. `Store` fields: `I...
- Modified
- 12 Jan at 18:54
HttpRequest.RouteValues property is not accessible from code but accessible from debugger
I am trying to create middleware which performs some checking for particular requests. For example, I have such routes: - `api/Test/{paramToCheck}/aaa`- `api/Test/bbb/ccc` and I have these requests...
- Modified
- 6 Jan at 12:41
.NET Core 3.1 - Could not load file or assembly System.Runtime, Version=4.2.2.0
.NET Core 3.1 console app generates error during build - > System.IO.FileNotFoundException: Could not load file or assembly 'System.Runtime, Version=4.2.2.0, Culture=neutral, PublicKeyToken=b03f5...
- Modified
- 6 Jan at 11:41
How should I register my mongodb service that uses the MongoClient, Singleton or scoped?
I am building an API with ASP.NET core using Mongodb and i have different services user service home service and etc. I would like to know should i register every service as singleton as it is mention...
How do I fix the error "Could not load file or assembly 'System.Text.Json, ..."?
- - `PowerShellStandard.Library``System.Text.Json` My `csproj` file contains this block: ``` <ItemGroup> <PackageReference Include="PowerShellStandard.Library" Version="5.1.1" /> <PackageRef...
- Modified
- 4 Jan at 23:19
Streaming videos with ASP.NET Core 3
I'm currently building a API in ASP.NET Core 3 as my first project with .NET Core. I'm currently trying to send a video to my React.js frontend to watch it in the browser. Uploading files and videos...
- Modified
- 4 Jan at 17:49
How can I map enum properties to int in ServiceStack.OrmLite without using annotations?
I want to serialize class from third party library. So I can't use annotations. How to configure ORMLite to serialize all (or specified) enums as int ? Edit: I found a solution. I register a converte...
- Modified
- 4 Jan at 16:31
ASP.NET Core 3 mock authorization during integration testing
I am using ASP.NET core to build an API, and I am trying to upgrade from .NET core 2.2 to .NET core 3.1. I am using the `[Authorize]` attribute to secure the API endpoints and I want to bypass it dur...
- Modified
- 3 Jan at 11:6
System Text JsonSerializer Deserialization of TimeSpan
In researching how to deserialize a `TimeSpan` using Newtonsoft's JSON.net I came across code in my current project that did not use Json.net. It used `System.Text.Json.JsonSerializer` and to not fai...
- Modified
- 2 Jan at 01:20
DefaultIfEmpty Exception "bug or limitation" with EF Core
I tried to execute the following code: ``` await _dbContext.Customers.Select(x => x.CustomerNr).DefaultIfEmpty(0).MaxAsync() + 1; ``` Essentially it has to get the highest customer number from the ...
- Modified
- 2 Jan at 05:54