Questions tagged [.net-core]
.NET Core is an open-source, modular implementation of the .NET Framework. It can be used in a wide variety of applications and verticals, ranging from servers and data centers to apps and devices. .NET Core is supported by Microsoft on Windows, Linux and macOS.
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Code structure for 3rd party API calls
The Problem:
I need to create a HttpService (Interface + Implementation) within an application that will be responsible for communicating with an external API service. There are three types of data ...
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3
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Algorithm to find sequential ID gaps in List<long>
I had to develop an algorithm that will find gap between sequential Ids within a List<long>.
For example as input we had the following ...
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HttpClient retry handler on response 429
When the remote server returns a 429 (Too Many Requests) response with the Retry-After header, the HttpClient can handle such cases with a handler:
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Automating the process of determining which boxes to load on each flight for freight company
I was given a test assignment for the interview of the company and below is the code that I shared with them. I developed it using .NET 6 (Core) Console application.
Actual problem statement:
Coding ...
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Azure DevOps Git: Fork into another Repo using Azure DevOps REST API
In my Azure DevOps Project, I have a Git repository that I would like to copy to another Azure DevOps Project.
In other words, I should be able to copy the original repo into other Azure DevOps ...
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Export and import work items from Azure DevOps
I'm working on an application that exports and imports work items from Azure DevOps. To import work items into Azure DevOps, I have written the following code.
Would you be able to review and make ...
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Is there a better way to update the related data in Entity framework core 6.0.7?
Role Entity has multiple SkillRoleRequirement, Education & Experience
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.Net Core 6.0 : Entity Framework - Either Or / Neither Nor / Both in Where clause
I am building a .Net Core 6.0 application that uses Entity Framework.
I have situation where I need to apply the filter(Where clause) based on two properties (eg: Guid? skillType, string skillName). ...
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Update a gamer and its child objects using Entity framework 6.0 [closed]
The below logic is working fine. But is there any way to optimize this logic ?
Gamer is the root level object, it will have Characters. Character will have set of Skills & a weapon
I want to ...
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326
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Hangfire context constructor injection
I tried following IHttpContextAccessor pattern but for Hangfire context. What I'm mostly interested in is CustomScope class with Resolve method. I'm using ActivatorUtilities there because otherwise I ...
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Implementation of Strategy Pattern for Task Scheduler
I need to implement a feature that schedules notifications to a user to which a Task has been assigned. The schedule could be one-time or on a ...
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RawSqlQuery minimizing risk of field name confusion
Is there a way to make the following code more maintainable?
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EFCore Monitor Interceptor with logging queries
I created a SqlMonitorInterceptor that will check the execution time of queries and log errors. The main idea is to log queries in such a way that they can be easily copied into SQL Server Management ...
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Is there a faster way to read bytes with a FileStream?
So I'm trying to read data and store it in an array as fast as possible and the fastest method I found of doing so was this.
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Memory leak I can't identify using Bitmap and Graphics classes
I have some parallel.for one inside another.
the last parallel.for have a normal for that ...
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Asynchronous TCP server refactor design & not working features
I'm working on an asynchronous TCP server which is supposed to be used for a chat. I want to get a review for the TCP server part because I'm struggling to find a good design to fulfill the following ...
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256
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Wrapper around SignalR's implementation
I made a web socket client wrapper using SignalR's implementation, but there are some downsides that I want to improve.
CancellationToken's implementation is wrong/incomplete
...
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High-performance ClientWebSocket wrapper
I'm working on a web socket client wrapper around ClientWebSocket and this is kinda my first public library project, which is why I'm asking this question here. I ...
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Achieving same abstraction by replacing JObject's implementation with System.Text.Json alternative
I'm trying to improve this wrapper by replacing the Newtonsoft.Json with System.Text.Json in its ...
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Reading inbox from a specific sender and for a specific subject in order to save excel attachments
In my .net core console application, I am reading a mail inbox and saving excel attachments from a specific sender that has a specific subject. It is working as is expected, I wonder if there are any ...
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Sending emails from .net core console hostedservice
In my .net core hosted service console application, I am reading a database table, retrieving some values, and based on a status, I am sending emails. It is working as it is expected, I wonder if ...
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Reading excel files and save data into database
In my .net core console application, I am reading multiple excel files and bulk copy data into a database table. It is working as it is expected, I wonder if there are any improvements to make it ...
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Using a IEnumerable where we have mostly only one item
I have a project where I publish and subscribe some data packages. Mostly those data packages are just one package, but sometimes (1 in 100) there could be more packages at one time (a lot more, like ...
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Configure service with user-related parameters in .NET Core dependency injection
I have service class which loads data from external service. This service needs API key which loads from db and unique for every user.
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423
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255
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How to replace the given email address with a value in a given input?
I have written the below method to replace some of the email domains like @gmail.com and @yahoo.com with a given text.
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Calling multiple clients from API controller methods?
Hi I have a requirement where in I have to call two different client methods from same api in .NET Core and I have structured my code as follows. THis is working fine but Please give me your ...
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Downloading multiple log files
This code succeeds in downloading log text files from multiple URLs. Can this be made more efficient?
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716
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Read compressed XML file inside ZIP and parse data as fast as possible
I am trying to read and parse an XML file inside of a ZIP archive as fast as possible. The XML file is roughly 85GB in size, so I know for a fact that I/O also plays a role here, as I need to ...
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Updating items in a list from a blocking source asynchronously
This is a Windows forms application.
this.Server.GetLogMessages() will block if there are no messages to get, so I want this in a separate thread. I'm putting the ...
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2k
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Simple async task scheduler
I've written a .NET Core console application to monitor the operation of a sensor network and I'd like a review of the task scheduling performed by the main program loop. There are three tasks that ...
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Decided to update HttpWebRequest to HttpClient
I updated my Instagram API and I read that HttpClient is now the preferred way in .NET Core 3.1. I would like to get a code review, because there are too many ...
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Better way to Read /Write Memory<byte> to/from POCO
I am communicating with a machine that sends/received structured binary data to my netcore service. The machine supplier's new library uses Memory in their library's API.
I have written the following ...
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Reading one source Stream by multiple consumers asynchronously
The problem was using single Stream from the HTTP response in multiple consumers simultaneously. For example: while data is loading, I want write it to the some ...
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Example of why IReadOnlyList<T> is better than public List<T> { get; private set; }
Early today, I gave an answer to someone where I recommended using IReadOnlyList<T>. Then I was asked why not just use a private setter, e.g. ...
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Avoiding Arrow Pattern with C# Pattern Matching [closed]
I have started to use C# 7's type based pattern matching. A method that only manages a single pattern-based result looks very clean and is easy to reason about.
However, once a second pattern-based ...
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Find assemblies in subfolder of primary assembly
I'm using the following handler to resolve assemblies in a specifically named subfolder of the main assembly's folder.
I am looking for improvements in:
clarity
correctedness
flexibility, as long as ...
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Building a Word document containing two different tables
I am trying to generate a Word document with two different tables inside it. For this purpose I have two similar methods where I am passing word document reference and data object and table to the ...
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Writing a c# class that has enum like constraint while behaving like string
Following This post : https://stackoverflow.com/questions/630803/associating-enums-with-strings-in-c-sharp/56482413?noredirect=1#comment107635743_56482413
I wanted to go further as it didn't quite ...
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Random temp folder implementation for unit testing
I faced a series of problems when unit testing a tool of mine that generates files. They were caused by me putting the files in the same temporary folder and the tests running in parrallel.
Here is ...
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Harry Potter Kata
I have implemented the Harry Potter Kata and I need your feedbacks.
The rules are:
A book costs 8 euros. There are 5 different volumes. To get a discount, you must buy books of different volumes:
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Is this implementation of signed URLs reasonably secure?
I'm trying to implement signed URLs for short lived access to static files.
The idea is:
generate an URL with an expiration timestamp (e.g. ...
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Idiomatic F# for iterating a seq and mapping whenever changes occur on a given selection
I've written a function that takes a sequence and check for every item in that sequence whether the current value a selection (obtained with a selection function) is different (or on the first ...
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C# - Reapply the manipulation of JS Object in .Net Core
IMPORTANT:
I made another version with some improvements: Version 2
Since some months ago I disagree with the native/code methods to manipulate dynamic or ...
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Three-way join in Entity Framework Core to retrieve all roles that a user has
I'm very new to Entity Framework Core, so I'm concerned about whether I've done this query in the most efficient way possible.
The database I'm querying looks like this:
Basically, ...
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Prioritizing one column over the other column of the same table [closed]
I am creating an API in .net core and I just could not figure out how to put the following Linq expression into a single call:
...
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Car Showroom Database: Taking user inputs and manipulating arrays
I've been learning C# for around 2 weeks and I'm feeling a bit more confident. I wrote this for general practice and am quite proud but hoping to make it faster and more efficient as I progress and ...
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Generic search service to filter entries in lists
I'm in the process of implementing a fully generic service to filter out entries (of any type), which are contained in a ICollection.
As it is generic, without any ...
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Dependency Injected StackExchange.Redis Client
I am currently building cache for my application, and I would like to have my redis cache client work the same way you would dependency inject a DbContext.
I am using StackExchange.Redis to manage my ...
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