04
SEP
Microsoft MVP for Azure
.NET C# Programming Language and .NET Platform
01
SEP
Fix Encoding.Default.GetChars() Result Different in .NET Framework and .NET 6
When upgrading a legacy .NET Framework application to .NET 6, a custom encryption method that uses Encoding.Default.GetChars() method, which output wrong result. Let's see why and how can we fix it. …
17
FEB
Adding Azure Cache for Redis in My Elf Project
ASP.NET Core Memory cache has its own limits. It is difficult to scale in a cloud environment with multiple instances. Azure Cache for Redis provides a fully managed distributed cache service for cloud applications. It is built on top of Redis, a popular cache and messaging product. Integrating Redis into cloud applications can improve performance and scalability. …
22
AUG
How to Get Access Token for Azure REST APIs in .NET
I am recently working on a project that requires front-end to call Azure REST APIs. Microsoft document describes how to get Access Token in postman via Jon Gallant's blog post. However, placing secret keys in front-end is very dangerous. In my project, I must get the Access Token from server side in .NET. Let's see how to do it. …
06
AUG
Log User Identity Information to Azure Application Insights
Azure Application Insights is a very powerful APM tool for monitoring web applications. However, not all features that we sometimes require come out of the box. I now have an ASP.NET Core Web API application that uses JWT authentication. I would like to log user's identity when there is a failed request. Let's see how to do it. …
10
MAY
ASP.NET Core Unit Test: How to Mock HttpClient.GetStringAsync()
In ASP.NET Core unit tests, if you want to mock HttpClient.GetStringAsync(), here's the trick. Problem Given the following code var html = await _httpClient.GetStringAsync(sourceUrl); When I tried to mock HttpClient.GetStringAsync() like this var httpClientMock = new Mock<HttpClient>(); httpClientMock .Setup(p => p.GetStringAsync(It.IsAny<string>())) .Returns(Task.FromResult("...")); Moq …
29
APR
ASP.NET Core Unit Test: How to Mock HttpContext.Features.Get()
In ASP.NET Core unit tests, if you want to mock HttpContext.Features.Get<SomeType>(), here's the trick. Problem I have my Error page code that will get exception detail infomation, to do that, I use HttpContext.Features.Get<IExceptionHandlerPathFeature>(). public void OnGet() { var requestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier; var exceptionFeature = HttpContext.Features. …
25
APR
ASP.NET Core Unit Test: How to Mock Url.Page()
Problem In ASP.NET Core, when you use extension methods on UrlHelperExtensions class, it would be difficult to write Mock in unit test. Because Moq doesn't support mocking extension methods. For example, the following code that I use in my blog is using Url.Page() method: var callbackUrl = Url.Page("/Index", null, null, Request.Scheme); But in my unit test, mocking like this will throw …
28
FEB
RMB capitalization converter in Blazor WASM
.NET 5 正式发布已经有一段时间了，其中 Blazor 技术是该版本的亮点之一。作为微软技术的被坑者，年少的我曾经以为 SilverLight 能血虐 Flash，Zune 能团灭 iPod，WP 能吊打 iPhone，UWP 能统一全平台…… 可是后…… 最终步入大龄程序员的我发现，只有陪伴了我将近 20 年的 ASP.NET 还没有完蛋。于是我这两天花了点时间，尝试将我的一个 UWP 小工具用 Blazor 重写，分享给大家。 无法抢救的 UWP “人民币大写转换器” 是我年少无知时开发的小工具之一，它的主要功能有： - 将数字金额转化为大写中文 - 复制结果 - 使用中文语音朗读结果 - 显示参照表 可惜 UWP 不论是充满 Bug 的 SDK，Runtime，还是微软的龟速更新与混乱的规划，都已经无可救药了，是时候给应用找个新家了。 Blazor Blazor 是 .NET
02
FEB