Category Archives: c#

C# Azure TelemetryClient will leak memory if not implemented as a singleton

Posted on May 7, 2020 by

I noticed that my classic .net web application would leak memory after I implemented metrics for some background tasks. Further investigation showed that my MetricAggregationManager would not release its memory. Since one of the major changes was the implementation of … Continue reading →

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Remove duplicates from XML feed

Posted on April 1, 2020 by

Apparently XML isn’t dead yet, and today I received a Google Product Feed in the RSS 2.0 XML format. The feed was full of duplicates and my job is to remove them: As you can see, “Product 100” appears twice. … Continue reading →

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.NET Core Worker Services with Application Insights and Serilog

Posted on March 20, 2020 by

The .NET Core Worker service is yet another tool in the .NET toolbox. They are perfect for background processing like reading from a queue or making health checks. They are cross-platform (of course) and they can run on docker containers, … Continue reading →

Posted in .net, .NET Core, c# | Tagged , , , | 4 Comments

System.DllNotFoundException: Unable to load DLL ‘sni.dll’ or one of its dependencies: The specified module could n ot be found. (0x8007007E)

Posted on March 11, 2020 by

This message happens when deploying my .NET Core 3.1 application to production (when compiling the code to an .exe file), but not when running the application locally. It turns out, that Dapper is missing a reference to System.Data.SqlClient. Adding the … Continue reading →

Posted in .net, .NET Core, c# | Tagged , , | 1 Comment

Sync Sitecore content to external database

Posted on March 6, 2020 by

The legal department of the client requested that we sync parts of the Sitecore tree to an external, system-versioned temporal table, so that we have a full audit trail of changes to these items including before-and-after values. Fear not, this … Continue reading →

Posted in .net, c#, Sitecore 5, Sitecore 6, Sitecore 7, Sitecore 8, Sitecore 9 | Tagged , , , , , , | Leave a comment

C# Get expiry timestamp from JWT token

Posted on February 27, 2020 by

JWT tokens (or Json Web Tokens) are an open-standard the defines a way to transmit information between 2 parties in a secure manner. Identity Server 4 uses JWT as a security token. These tokens have an expiry timestamp, and if … Continue reading →

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Azure App Configuration – Getting the connection string from appsettings.json

Posted on February 14, 2020 by

Azure App Configuration is a services that provides a central place to manage application settings, and it provides cool features like feature flags and auto refresh of settings when they are changed. To access Azure App Configuration from your .NET … Continue reading →

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Command line parameters in .NET Core Console Applications

Posted on February 12, 2020 by

When implementing .NET Core console applications, you can extract the command line parameters from the void Main(string[] args) method, but it can be a little tedious to do so. To help with the parsing, Microsoft used to maintain the Microsoft.Extensions.CommandLineUtils, … Continue reading →

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Sitecore Create/Read/Update/Delete/Copy/Move/Rename item – the beginners guide

Posted on January 23, 2020 by

New Sitecorians often ask the most trivial questions, and I am happy to answer them. This question popped up lately: How do you perform basic CRUD operations on your Sitecore items? Well, it’s easy: READ ITEM (GET ITEM): CREATE ITEM: … Continue reading →

Posted in .net, c#, General .NET, Sitecore 5, Sitecore 6, Sitecore 7, Sitecore 8, Sitecore 9 | Tagged , | 1 Comment

Sitecore use item:deleting event to avoid deletion of items

Posted on January 3, 2020 by

The Sitecore extendable model allows you to build business rules into your Sitecore solution. This is an example where I disallow deletion of certain items when a certain business rule is true. This pattern could be implemented using a field … Continue reading →

Posted in .net, c#, Sitecore 6, Sitecore 7, Sitecore 8, Sitecore 9 | Tagged , , | 1 Comment