Category Archives: c#

C# Using Dapper as your SQL framework in .NET Core

Dapper is a easy to use object mapper for .NET and .NET Core, an it can be used a variety of ways. I use Dapper instead of Entity Framework because it makes my code less complex. BASICS OF DAPPER: THE … Continue reading

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C# Remove specific Querystring parameters from URL

These 2 extension methods will remove specific query string parameters from an URL in a safe manner. METHOD #1: SPECIFY THE PARAMETERS THAT SHOULD GO (NEGATIVE LIST): Usage/Test cases: METHOD #2: SPECIFY THE PARAMETERS THAT MAY STAY (POSITIVE LIST): Usage/Test … Continue reading

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Handling “415 Unsupported Media Type” in .NET Core API

The default content type for .NET Core API’s is application/json. So if the content-type is left out, or another content type is used, you will get a “415 Unsupported Media Type”: This is for example true if you develop an … Continue reading

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C# Newtonsoft camelCasing the serialized JSON output

JSON love to be camelCased, while the C# Model class hates it. This comes down to coding style, which is – among developers – taken more seriously than politics and religion. But fear not, with Newtonsoft (or is it newtonSoft … Continue reading

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Simple C# MemoryCache implementation – Understand the SizeLimit property

The .NET Core IMemoryCache is probably the simplest cache there is, and it is very easy to use, once you get your head around the weird SizeLimit property. Especially when using the nice extension methods in this NuGet package: Microsoft.Extensions.Caching.Memory … Continue reading

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Write to file from multiple threads async with C# and .NET Core

There are several patterns on how to allow multiple threads to write to the same file. the ReaderWriterLock class is invented for this purpose. Another classic is using semaphors and the lock statement to lock a shared resource. This article … Continue reading

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HttpClient retry on HTTP timeout with Polly and IHttpClientBuilder

The Polly retry library and the IHttpClientBuilder is a match made in heaven as it defines all the retry logic at startup. The actual HttpClient  calls are therefore untouched by any retry code. The retry logic is called policies, and … Continue reading

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Azure Cognitive Search from .NET Core and C#

The Azure Cognitive Search engine is the search of choice in the Microsoft Azure. The search engine can be used in a myriad of ways and there are so many options that it can be difficult to find a starting … Continue reading

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Sitecore LinkField TargetItem is NULL – what’s wrong?

An ancient topic, that pops up once or twice every year. The TargetItem of Sitecore.Data.Links.LinkField returns NULL and you are CERTAIN that the item is published. What to do? CASE 1: THERE IS SECURITY SET ON THE TARGETITEM Items where … Continue reading

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Add a UserAgent to the IHttpClientFactory in .NET Core

Using a IHttpClientFactory to create HttpClient connections have a number of advantages, as you can configure several httpclients on startup. Each client will be reused, including the properties attached to that client. In a previous post I showed how to … Continue reading

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