Tag: ASP.NET Core

Build a Custom FeatureGate Attribute in ASP.NET Core with C#

Feature management is a key technique in modern web applications, allowing you to enable or disable features dynamically without redeploying your code. In ASP.NET Core, the Microsoft.FeatureManagement library provides a robust way to implement feature flags. But what if you want to ensure that administrators can always access certain features, even if those features are disabled for regular users?

Custom IFeatureDefinitionProvider: Feature Flags from Tests and Databases

Feature flags are a great way to ship safely, run experiments and keep production changes reversible. In .NET, the de-facto standard is Microsoft.FeatureManagement .

From ASP.NET Core to Hugo: My Blog's Migration to Cloudflare

Like many developers, my blogging journey started with WordPress. More than 20 years ago. It was convenient, widely supported and quick to set up. But over time, the drawbacks began to pile up: security issues, constant updates, performance tuning, plugin juggling, costly – the overhead was real. I wanted something more streamlined, something that gave me control without stealing my time.

Create a custom captcha provider with ASP.NET Core

Nowadays, you can’t actually run a website on the Internet without having a protection mechanism against content bots. One possibility is the use of CAPTCHAs. CAPTCHAs are small tasks that a human can easily solve, but a bot (almost) cannot.

Create a custom proxy endpoint action with ASP.NET Core MVC

There are various reasons why it is useful to channel certain requests through your own application to an external endpoint; the most obvious is, for example, as a workaround for client statistics from browser adblockers like Microsoft Clarity or Cloudflare Web Analytics.

Enable NuGet Audit for better DevSecOps in .NET

Auditing is becoming increasingly important in the everyday life of a developer; however, until now there was no particularly good way in .NET - even the lock file still has its deficiencies. You had to rely on third-party packages in order to carry out real auditing of your packages and references or use security software such as WhiteSource or Snyk.

ASP.NET Core Form protection with Cloudflare's Turnstile

TLDR;

You can see the full sample in my GitHub repository BEN ABT Samples - ASP.NET Core Form protection with Cloudflare’s Turnstile

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Header and Footer Layouts with Handlebars.NET

One of the last blog posts (Text and EMail Templates with Handlebars.NET ) was generally about HandleBars.NET - a very popular template engine. This post is about how you can easily implement layouts with Handlebars.

Text and EMail Templates with Handlebars.NET

A frequent requirement in apps is the conversion of templates, e.g. for sending e-mails, for PDF templates or other text modules. There are many different ways to do this, ranging from simple string replacements to the Razor engine of ASP.NET Core.

Deploy ASP.NET Core via Zip Deployment to Azure Web App

There are various ways to deploy an application, but Zip deployment is the variant that is recommended the most - regardless of whether you are using Azure, AWS or other cloud and hosting providers.

Validate Configuration Options with ASP.NET Core

Configuring an ASP.NET Core application can be done in a variety of ways, including using command-line arguments, environment variables and JSON files. One way to ensure that the options you have configured for your application are valid is to use the IOptions interface functionality, which provides a way to inject strongly-typed options into your application’s services.

Enrich Token Claims with ASP.NET Core

Often you have the requirement that you need or want to add additional claims to a token - either the, ID token or the access token. This is especially useful when one needs an additional custom enrichment that is not available at the time of token creation.

ASP.NET Core 7 Roadmap veröffentlicht

Das Microsoft ASP.NET Team hat nun die Roadmap zu .NET 7 veröffentlicht. Der Release ist für November 2022 geplant.

Der GitHub Link: ASP.NET Core Roadmap for .NET 7

Parse HTTP User Agents with ASP.NET Core

In my last blog post I shared why we wrote our own user agent parser (mycsharp/HttpUserAgentParser ) in .NET (reason: performance).

Build and Test .NET Core with GitHub Actions

What is GitHub Actions?

GitHub Actions is the counterpart to Azure DevOps Pipelines: a fully configurable automation tool for setting up workflows, such as building, testing and publishing software and applications.

Use hCaptcha with dotnet and ASP.NET Core

Many websites protect themselves from automated access with reCaptcha, a Google company.

The top dog can be found on almost every website.

Was erwartet uns mit ASP.NET Core 5?

Nachdem Microsoft nun die erste Preview von .NET 5 veröffentlicht hat stellt sich die Frage: was kommt eigentlich mit ASP.NET Core 5?

Expose OpenSearch Endpoint with an ASP.NET Core Controller Action

OpenSearch

OpenSearch is a standard that has existed for about 15 years and is used by search engines and Browsers.

Custom PasswordHasher in ASP.NET Core Identity

In the ASP.NET Core Identity environment, the PasswordHasher is responsible for securely storing the password and performing password entry checks.

In this respect, the PasswordHasher is also responsible for choosing the correct hash method, whereby several hash methods can be used.

Custom Model Binders in ASP.NET Core

What are Model Binders?

ModelBinders are required in ASP.NET Core to pass parameters from HTTP requests into a controller action method.

ASP.NET Core Serverless on AWS Lambda

Serverless

Serverless is on everyone’s lips; in the .NET area it means mainly Azure Functions. In principle Serverless is all about not having to worry about scaling yourself - and that is much more than just Azure Functions.

AWS Toolkit for Visual Studio 2019

AWS (Amazon Web Services) offers an extra toolkit for Visual Studio 2017 and Visual Studio 2019 that integrates seamlessly to create projects based on AWS products.

Twitch MediatR with ASP.NET Core

Twitch

Twitch is the leading streaming platform for video games and Co.

Starting small, Twitch hosts monthly over 3.5 million streamers that can be watched over the shoulder while playing games, cooking or driving a car. This platform is therefore very well known, especially with the younger generations. More than 70% of the viewers, whose average age is 21 years, belong to the millennials. The average Twitch user already spends almost 2 hours a day on the platform to watch videos.

Model Binders in ASP.NET Core

When ASP.NET Core receives a web request, it routes the request to a specific action - a method that matches the route - of a controller.

HTTP Status 500 on debugging ASP.NET Core with Visual Studio 2017

I gave my PC a new Windows installation and run into the following error:

Unable to start process C:\Program Files\dotnet\dotnet.exe. The web server request failed with status code 500, Internal Server Error. The full response has been written to C:\Users\Ben\AppData\Local\Temp\HttpFailure.html.

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Modern API-Development with ASP.NET Core

Due to my daily business, I have created a series of sample projects how to develop and evolve a modern API with the help of ASP.NET Core.

Run ASP.NET Core with .NET Framework in a Docker Container

Sometimes you still have the requirement that the .NET Framework is needed - but you still want to use ASP.NET Core and Docker.

Setup VSTS YAML builds for your ASP.NET Core app

Idea

YAML builds are a very common way to define builds in AppVeyor, but in Visual Studio Team Services (VSTS) this feature is pretty new - and still in beta.

ASP.NET Core ModelState Validation Filter

I like my ASP.NET Core controllers and actions very clean and I recommend to not catch all Exceptions inside your Action.

What's new in .NET Core, ASP.NET Core and EF Core 2.1

Yesterday the Microsoft Teams have updated their roadmaps of .NET Core, ASP.NET Core and EF Core in focus of the next version 2.1:

Better exception details with ASP.NET Core

By default, ASP.NET Core suppresses Exceptions on Startup on external environments. So you only get Exceptions in Startup on localhost.

ASP.NET Core - Teil 2: die Middleware

Bereit bei ASP.NET 4 konnte man mit Hilfe von OWIN - Open Web Interface for .NET - Middleware-Implementierungen sehr einfach und robust umsetzen. Middlewares bieten hier eine Pipeline, sodass verschiedene Middleware nichts voneinander wissen müssen; Requests und Responses aber mit einem Pipeline-Prinzip abgearbeitet werden können.

ASP.NET Core - Teil 1: die Basics

Seit Ende Juni steht ASP.NET Core 1 als RTM zur Verfügung - und es erfreut sich großer Beliebtheit!

In diesem mehrteiligen Beitrag möchte ich einen Einstieg für Interessierte bieten.

ASP.NET Core - hello world

Hello world

Hier ein vollständiges und minimales Beispiel, wie eine simple Hello World Anwendung in ASP.NET Core 1 aussehen kann:

Eine moderne WebAPI - die OData Basics

Was ist OData?

Doch zunächst etwas Vorgeschichte

Seit es Schnittstellen (API) zum Austausch von Daten gibt, gibt es die Unsicherheit, welche Daten von einem Webservice zurückgegeben werden – es hat die Semantik, ein Standard gefehlt.