.NET - Edi Wang

15

FEB

Fix .NET Core Website Failure After Deployment from Azure DevOps

I met a strange problem recently. After configuring the CI/CD pipeline with Azure DevOps and automatically deploy to Azure App Services, the. NET Core Website failed to start. Let's see how we can solve this problem. Find the issue First of all, fortunately, this is a staging environment. I found that the site unexpectedly did not log anything, even log directory cannot be found, which is very …

08

FEB

Detect Text Language using Azure Cognitive Services in .NET Core

There are many ways to identify what is the language of a text, in this era of AI, we can also add AI capabilities to our own application. I will show you to see how to use the AI Cognitive Service provided by Microsoft Azure to detect the language of a text. The prerequisite is that you will need an Azure subscription. Create Azure Cognitive Services Account Click "Create a resource", then …

.NET Azure AI Cognitive Service

28

JAN

Recommended Visual Studio Configuration for .NET Core Development

Visual Studio has always been a good friend to .NET developers, although VS Code can do .NET Core development, VS is still having a lot advantages. Let's see how to make Visual Studio more handy for .NET Core development. Basic Configuration First, please be advised, not all versions of Visual Studio supports .NET Core development, even some early version of VS2017. Some people may mistake for …

.NET Visual Studio

21

JAN

ASP.NET Core Dependency Injection in ActionFilterAttribute

In ASP.NET Core, we can easily use constructor injection to make Dependent Injections on components such as Controller and ViewComponent. But how to do it with ActionFilterAttribute? The Problem My blog system has an ActionFilter for deleting subscription files, and I want to log errors when an exception happens. I use NLog as the logging component, so I need to use LogManager. …

.NET Dependency Injection

15

JAN

Caveats in ASP.NET Core Data Protection

ASP.NET Core provides a built-in Data Protection mechanism to let us encrypt or decrypt sensitive data. There are some limitations that can cause problems while bringing convenience. I met some problems these days. My Scenario My blog system has a feature to send email notifications, so you need to configure an email account to let the program use that account to send mail to an administrator …

.NET AES Encryption

05

JAN

Auto Refresh Settings Changes in ASP.NET Core Runtime

In ASP.NET Core, if you modify the settings in appsettings.json, you will have to restart the site to take effect. Is there a way to refresh and apply it automatically after you modify the settings? Background Let's take a look at a website created by ASP.NET Core default templates. It includes two settings files: appsettings.json appsettings.Development.json The former one is used in production …

.NET ASP.NET

28

DEC

Dependency Injection with Multiple Implementations in ASP.NET Core

The built-in Dependency Injection (DI) in ASP.NET Core is very useful, but how do you deal with an interface has multiple implementations? Can the runtime choose one of these implementations based on configuration? Is there a way to get rid of reflection? Let me show you how to dynamically select a specific implementation of an interface at run time according to the configuration file without …

.NET ASP.NET Design Pattern Dependency Injection

27

DEC

Path Caveat with ASP.NET Core 2.2 IIS Hosting

ASP.NET Core 2.2 has been in place for some time, with a new feature that can use the new AspNetCoreModuleV2 and deploy with InProcess mode on IIS to dramatically improve performance. These days Azure App Service finally completed the deployment of this new version of the module, I configured my blog to the new module, and it exploded in production. Let's see why and how to solve it. If you don't …

.NET ASP.NET IIS

25

NOV

.NET Core WebUtility.UrlEncode or HttpUtility.UrlEncode

When we are dealing with URL encode in .NET Core 2.1, there are two APIs: System.Net.WebUtility.UrlEncode and System.Web.HttpUtility.UrlEncode. What's the difference between them? And which one should we prefer to use? I have done some research today, here's my findings. 1. Test Results First, let's see some tests. I've tested 2 couples of the same method between WebUtility class and HttpUtility …

.NET URL Encoding

31

OCT

Migrating Old ASP.NET Applications to .NET Core

More and more people are talking about .NET Core these days. It is true that .NET Core is the future, and .NET Framework will still be maintained because very large number of applications can’t be migrated in a short time. .NET Core and .NET Framework are just like electric cars and gasoline powered cars. Gasoline cars is mature, and you can drive it without any problem, but electric cars have …