Category Archives: c#

.NET Core Caching in your API using AddResponseCaching and ResponseCache attribute

Posted on May 23, 2023 by briancaos

Caching the response of an API speeds up the API endpoint because the code that generates the response is not called, but rather fetched from memory. This is especially helpful for API’s where the response is time-consuming to retrieve but … Continue reading →

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C# Use HttpClient to GET JSON from API endpoint

Posted on April 28, 2023 by briancaos

So, most API endpoints return JSON anyway, right? So why not make a method that can make a GET call to an API and return the response as an object directly? It’s actually not that hard: STEP 1: MAKE A … Continue reading →

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C# HttpClient and IHttpClientFactory in .net core

Posted on April 21, 2023 by briancaos

The C# HttpClient is the go-to library when you need to GET, PUT, POST or DELETE from an API Endpoint. But one of the issues with HttpClient is that it needs to be instantiated as a singleton. This is a … Continue reading →

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C# String Token Replacer

Posted on April 13, 2023 by briancaos

Imagine this classic text where you need to replace tokens with some values: Welcome {{user}}. Click on this link to confirm your subscription: {{url}}. Tokens encapsulated in double brackets {{token}} are commonly used to mark tokens to be replaced with … Continue reading →

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Sitecore The type or namespace name ‘Job’ does not exist in the namespace ‘Sitecore.Jobs’ (are you missing an assembly reference?)

Posted on March 30, 2023 by briancaos

From Sitecore 9.0 to Sitecore 9.2, Sitecore updated the Jobs namespace: This resonates with the Sitecore structural changes where Sitecore implements abstractions for most of their code. This change began all the way back in Sitecore 7.5 and makes it … Continue reading →

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C# byte size to string

Posted on March 30, 2023 by briancaos

How do you convert a byte size into a human readable string? There are many many ways of doing this. I made probably the simplest and most readable version, and wrapped it as an extension method: Please note that this … Continue reading →

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C# Dapper Trim String Values

Posted on March 8, 2023 by briancaos

I was calling a stored procedure using Dapper, and for reasons beyond my understanding, the stored procedure returned strings as non-trimmed strings: I could of course look into the stored procedure, but that would require me to obtain new knowledge … Continue reading →

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Parameters and Arguments in .NET Core Command Line Applications

Posted on March 2, 2023 by briancaos

Microsoft have released a new System.CommandLine library to handle parameters and arguments in your .NET Core 6 console applications. The NuGet Package is currently (March 2nd 2023) in beta, so you need to allow prerelease NuGet packages in your solution. … Continue reading →

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Could not load file or assembly ‘System.Diagnostics.DiagnosticSource, Version=4.0.4.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51’ or one of its dependencies. The system cannot find the file specified

Posted on February 13, 2023 by briancaos

The following error may occur when upgrading Microsoft ApplicationInsights: [FileNotFoundException: Could not load file or assembly ‘System.Diagnostics.DiagnosticSource, Version=4.0.4.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51’ or one of its dependencies. The system cannot find the file specified.]Microsoft.AspNet.TelemetryCorrelation.TelemetryCorrelationHttpModule.Application_BeginRequest(Object sender, EventArgs e) +0System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +142System.Web.<>c__DisplayClass285_0.b__0() +38System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +11857717System.Web.HttpApplication.ExecuteStep(IExecutionStep … Continue reading →

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C# Authorization in .NET Core API’s using Attributes, TypeFilterAttribute and IAuthorizationFilter

Posted on January 25, 2023 by briancaos

So the goal here is to define that a specific API endpoint in my .NET Core API requires an authorization token. It’s not all my endpoints that requires authentication, only those I specify. To obtain this, I would like to … Continue reading →

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