Top Questions

53.5k views

How to call ThenInclude twice in EF Core?

I'm creating an ASP.NET Core API app, and relying on EF Core. I have entities defined like this: ``` public class AppUser : IdentityUser { public string FirstName { get; set; } public string...

Modified: 8 Jan at 06:40

13 votes

7.1k views

Replacing DefaultModelBinder in ASP.net MVC core

I am converting an MVC 5 project over to core. I currently have a custom model binder that I use as my nhibernate entity model binder. I have the option to fetch and bind by fetching the entity out ...

Modified: 17 Jun at 03:4

1 votes

83 views

ServiceStack MQ: how to populate data in RequestContext

I'm developing a JWT-based multi-tenancy system using ServiceStack. The JWT token contains shard information, and I use `JwtAuthProvider` to translate the JWT token to session object following instruc...

Modified: 16 Jun at 10:47

14 votes

28k views

UseSqlite with Entity Framework Core in ASP.NET Core 2.1 not working

I am starting a Razor pages project in ASP.NET Core 2.1. I am trying to use SQLite but when configuring the database only SQL Server seems to be an option. ``` using Microsoft.AspNetCore.Builder; u...

Modified: 8 Jan at 10:41

16 votes

2.8k views

Why ref structs cannot be used as type arguments?

C# 7.2 [introduced](https://learn.microsoft.com/en-us/dotnet/csharp/reference-semantics-with-value-types) `ref struct`s. However, given a `ref struct` like this: ``` public ref struct Foo { public i...

Modified: 27 Nov at 11:19

3 votes

79 views

ServiceStack not deserializing Dictionary<string,object> properly

I'm using ServiceStack v5.1.0 and here is the issue I'm having: I have a DTO that looks like this: ``` [Route("/TablesV2/{Id}/Query/{QueryId}/Edit", Verbs = "POST")] public class EditTableRecord ...

Modified: 15 Jun at 07:30

12 votes

3.3k views

Why is casting a struct via Pointer slow, while Unsafe.As is fast?

## Background I wanted to make a few integer-sized `struct`s (i.e. 32 and 64 bits) that are easily convertible to/from primitive unmanaged types of the same size (i.e. `Int32` and `UInt32` for 32-...

Modified: 15 Jun at 14:4

0 votes

8 answers

views

Is union available in LINQ query syntax?

I noticed that I was unable to structure a linq query with a `union` of two selects, using [ANSI syntax][1]. The .net documentation has an article on [query syntax examples][2] where union is not show...

Modified: 7 May at 07:13

33 votes

19.4k views

Seed entity with owned property

I am trying to seed an user entity in my database. The `User` entity has an owend property `EmailPermissions`. When I run the command > dotnet ef migrations add Initial; I get the error > The see...

Modified: 14 Jun at 17:34

108 votes

82.5k views

System.NotSupportedException: No data is available for encoding 1252

I'm working with a [Trust Commerce Tutorial](https://vault.trustcommerce.com/) on how to generate a payment token that will allow customers to use the TC Trustee Host payment form. I was given an exam...

Modified: 20 Jun at 09:12

0 votes

8 answers

views

Debugging x64 Azure Functions in Visual Studio

I'm writing a C# Azure function via Visual Studio. This function is triggered through blog storage, and the blob is processed using an x64 C++ DLL. The issue is that the default Azure functions toolin...

Modified: 7 May at 03:54

2 votes

527 views

ServiceStack session not being saved after authenticating from client

I have implemented a custom authentication provider (CredentialsAuthProvider) to authenticate myself. Everything works perfect here. I authenticate via the following code in my ASP.NET Client applicat...

Modified: 14 Jun at 08:16

57 votes

83k views

Breakpoints set but not yet bound in Visual Studio

Running Visual Studio Community 2017. Created a WebAPI project, have a controller class in there, with some basic stuff, but when I go to run in debug mode, I get the following error on my breakpoints...

Modified: 13 Jun at 19:46

16 votes

16.6k views

EF: db.SaveChanges() vs dbTransaction.Commit

I am fairly new to entity framework and I have a doubt on EF's db.SaveChange. From some posts and MSDN I learned that `db.SaveChange` by default does all the changes in transaction. Also there is a wa...

Modified: 13 Jun at 21:8

21 votes

20k views

Data protection in ASP.NET Core 2.1 only works on one machine

I'm using the [ASP.NET Core Data Protection system](https://learn.microsoft.com/en-us/aspnet/core/security/data-protection/configuration/overview?view=aspnetcore-2.1&tabs=aspnetcore2x) to encrypt data...

Modified: 20 Jun at 09:12

16 votes

12.6k views

EF Core 2.1.0 set default string length and column type

Since Entity Framework uses `nvarchar(max)` as default for strings I would like to set something else as default. [https://dba.stackexchange.com/questions/48408/ef-code-first-uses-nvarcharmax-for-all...

Modified: 13 Jun at 15:14

14 votes

9.8k views

Check string content of response before retrying with Polly

I'm working with a very flaky API. Sometimes I get `500 Server Error` with `Timeout`, some other time I also get `500 Server Error` because I gave it input that it can't handle > SqlDateTime overflow....

Modified: 30 Jul at 09:40

11 votes

781 views

Split and then Joining the String step by step - C# Linq

Here is my string: `www.stackoverflow.com/questions/ask/user/end` I split it with `/` into a list of separated words:`myString.Split('/').ToList()` Output: ``` www.stackoverflow.com questions ask ...

Modified: 13 Jun at 10:34

15 votes

17.7k views

Replacing service layer with MediatR - is it worth to do it?

Do you think it might be reasonable to replace my service layer or service classes with MediatR? For example, my service classes look like this: ``` public interface IEntityService<TEntityDto> where ...

Modified: 13 Jun at 10:58

1 votes

107 views

ServiceStack: Authorize from client using a CustomCredentialsAuthProvider

I have a service stack REST-API that I want to access from a client. I have implemented an authorization mechanism using a custom CredentialsAuthProvider. This is my CustomCredentialsAuthProvider. I ...

Modified: 13 Jun at 08:54

12 votes

1.2k views

Get context connection and use it as a connection in other place

I am working in an environment in which enterprise host application is calling client applications with implemented COM interface via ProgID. This is the way how programmers of host application allow ...

Modified: 26 Jul at 09:50

54 votes

3k views

How to determine whether two "ref" variables refer to the same variable, even if null?

How can I determine whether two `ref` variables refer to the same variable – even if both variables contain `null`? Example: ``` public static void Main( string[] args ) { object a = null; o...

Modified: 13 Jun at 21:42

1 votes

295 views

ServiceStack Performance

Let me start by saying I love the design of ServiceStack as a client. (I've never used it for server side) I'm writing a C# wrapper for API calls and I keep getting timeout and authentication errors...

Modified: 13 Jun at 04:23

20 votes