Why Entity Framework have AddAsync?
I understand why EF have `ToListAsync` or `SaveChangesAsync` - because it waits for db operation execution. But `AddAsync` just returns `Task.FromResult` - so why is there the `AddAsync` method? And w...
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- 31 Oct at 11:21
ASP.NET Core + ApplicationInsights Logging Errors as Trace
I am using Microsoft.ApplicationInsights.AspNetCore ([https://www.nuget.org/packages/Microsoft.ApplicationInsights.AspNetCore](https://www.nuget.org/packages/Microsoft.ApplicationInsights.AspNetCore))...
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- 31 Dec at 08:8
new object[] {} vs Array.Empty<object>()
When I type the following code: ``` object[] objects = new object[] { }; ``` Visual Studio tells me: > Avoid unnecessary zero-length allocations. Use `Array.Empty<object>()` instead. Are there any ac...
Hash code of string is broken in .NET Core 2.1, but works in 2.0
I recently upgraded one of my projects from .NET Core 2.0 to .NET Core 2.1. After doing so several of my tests started to fail. After narrowing this down I've found that in .NET Core 2.1 it is not po...
How to rename an inherited API member in a subclass?
Say I have: ``` public class Parent{ [ApiMember(Name = "parentItem")] public string Item {get; set;} } ``` and ``` public class Child : Parent { [ApiMember(Name = "childItem")] pub...
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- 30 Oct at 00:37
ServiceStack Auth ProviderOAuthAccess
What can be the reason that in this method: ``` public override object Authenticate(IServiceBase authService, IAuthSession session, Authenticate request) ``` In...
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- 29 Oct at 19:16
Why does Enumerable.Single() iterate all elements, even when more than one item has already been found?
When profiling one of our applications, we discovered a mysterious slowdown in some code where we were calling `Enumerable.Single(source, predicate)` for a large collection that had more than one item...
IIS 10 on Windows Server 2016 not running my ASP.NET MVC website
I just bought a new Cloud based Virtual machine with Windows server 2016 installed. I also make sure IIS 10 has .NET Framework 4.6 and ASP.NET 4.6 installed. [](https://i.stack.imgur.com/K7zjk.png) ...
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- 29 Oct at 09:35
Using ApiControllerAttribute without using RouteAttribute
In ASP.NET Core (v 2.1.5) you can create controllers without having them inherit from `Controller` class (as you know). And if you do, you have to use `RouteAttribute` to define your routes. But, I'm ...
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- 26 Jul at 12:12
.net core get user in ValidationAttribute
I am trying to access the current user (i.e. ClaimsPrincipal from identity) in a custom ValidationAttribute, and I haven't figured out how I could do that. public class UniqueTitleValidator : Valida...
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- 6 May at 07:19
How can I add kid to jwt header using SecurityTokenDescriptor in .netcore
I am using .netcore 2 with JwtSecurityToken to generate a token ``` var jwtSecurityToken = new JwtSecurityToken( issuer: issuer, audience:issuer, claim...
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- 27 Oct at 00:3
Get root directory of Azure Function App v2
I build an Azure Function App (v2). Configuration tasks necessary for all functions are done in a Setup class that is structured like the following: ``` [assembly: WebJobsStartup(typeof(Startup))] i...
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- 6 Nov at 09:22
How to optimize ServiceStack.Text performance when deserializing to enums with DataContract
Is there a way to optimize ServiceStack.Text (version 5.4.0) performance when deserializing enumerated values to .Net enums that have [DataContract](https://learn.microsoft.com/en-us/dotnet/framework/...
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- 26 Oct at 09:46
MissingMethodException get_QueryString
I come across this exception in my .net core app (.net core 2.1 and I'm using service stack 5.2). > Method not found: 'ServiceStack.Web.INameValueCollection ServiceStack.Web.IRequest.get_QueryString(...
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- 26 Oct at 03:45
ImageMagick security policy 'PDF' blocking conversion
The Imagemagick security policy seems to be not allowing me perform this conversion from pdf to png. Converting other extensions seem to be working, just not from pdf. I haven't changed any of the ima...
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- 2 Nov at 14:39
ServiceStack Metadata Redirect behind a Azure App Gateway not working
My api is hosted on Azure as an App Service with an Azure App Gateway in front of that. I have set the webhosturl in my startup and that is working as when I view the metadata page, i see the links...
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- 25 Oct at 18:34
Post with int/string (simple type) in body to asp.net core web api 2.1 not working
I'm simply having no luck sending an url encoded form value from postman to a vanilla asp.net core 2.1 web api created with file->new project. I do nothing to it whatsoever but still the new model val...
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- 16 Dec at 22:5
Component definition is missing display name react/display-name
How do I add a display name to this? ``` export default () => <Switch> <Route path="/login" exact component={LoginApp}/> <Route path="/faq" exact component={FAQ}/> <Route component={Not...
Getting "Program does not contain a static 'Main' method suitable for an entry point" when building using docker, why?
I'm running into an issue using Docker and couldn't find a proper solution. I'm trying to build a Docker image using .NET SDK 2.1. The thing is that when Docker tries to run the build statement, it fa...
Span and Memory as a replacement for arrays in method signatures?
# Replace arguments with Span in methods? Should I replace all my array (such as `byte[]`, `char[]`, and `string[]`) parameters in my synchronous methods with `Span` (such as `Span<byte>`, `Span<c...
asp.net core constructor injection with inheritance
In my asp.net core application I have dependency classes which are injected to almost all services. So I want to build a base service class to get these dependencies to properties and my services inhe...
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- 25 Oct at 06:19
ServiceStack Self-Hosted app and NotifyIcon
I have a working Windows Service (on Windows 10, .Net471) that implements ServiceStack AppSelfHost Base and provides a number of (so far) simple REST APIs. I'd like to add NotifyIcon type of functiona...
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- 24 Oct at 20:43
Validate query parameters without using a model in .netcore api
Is it possible to validate query parameters on an action without using a model? A lot of the calls in my API are one-offs and I don't see a point in making models for them if they will only be used on...
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- 24 Oct at 20:49
What is happening with this C# object initializer code?
What is going on with this C# code? I'm not even sure why it compiles. Specifically, what's going on where it's setting Class1Prop attempting to use the object initializer syntax? It seems like invali...
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- 24 Oct at 20:4