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How to get current user in ASP.NET Core?

This post describes how to get the currently logged in user using ASP.NET Core. This is compared with how it’s done in .NET Framework. Background In .NET Core, a lot of things are done a bit differently. That’s what I’ve been learning building more and more stuff with it, instead of good old .NET Framework. The learning curve is definitely there, but it’s not that bad – most of the things work in a similar fashion, but a huge number of details are different. In […]

The following functions are in error... And that's about it.

Fixing “The following functions are in error: Object reference not set to an instance of an object.” error in Azure Functions

Let me start this article, by reminding everyone that Azure Functions are awesome, and you should use them despite some hiccups. Having said that, let’s fix some errors! In the beginning of September 2018, Microsoft started pushing out breaking changes to Azure Functions 2.x. They had announced this a full month in advance, so they expected everyone in the world to update their Azure Functions to avoid the functions from breaking. I guess, however, that in real life, a month is not that much. Me, […]

Azure Functions SDK 2.0 settings in accessed in C# code

How to access Azure Function App’s settings from C#?

Different versions of Azure Functions have different ways to access the Azure Function settings. This is another little thing, that I always forget – so better document it somewhere! So, this post describes, how you can access the function’s Application/Environmental settings/variables from your C# code. Posts Related to “How to access Azure Function App’s settings from C#?”:What is “fp.js” – and why is it snooping on your SharePoint usage?The Scary Anatomy of a Microsoft License FraudHelp! My ASP.NET MVC textbox date format is wrong!

Mock Function call to force loading an assembly - how elegant!

New version of Microsoft.IdentityModel.Clients.ActiveDirectory (ADAL.NET) is out – good time to update!

There’s now a new version of the assembly Microsoft.IdentityModel.Clients.ActiveDirectory available – plenty of reasons to update right away! Let me offer you one hot take on the matter since the earlier 3.x -versions of the package had some issues. Why bother updating? In an earlier post I described an issue I had with Microsoft.IdentityModel.Clients.ActiveDirectory.Platform not getting copied during the build in a referencing project. In 3.17.0, which the developers published this month, they fixed the issue! The new package actually contains separate DLLs for different platforms. In […]

Mock Function call to force loading an assembly - how elegant!

A quick (and handy!) hack to force referenced assembly to getting copied to a project

Visual Studio failing to copy a referenced assembly to a project in build might lead to surprising runtime errors. This post will explain one method of fixing these issues, using Microsoft.IdentityModel.Clients.ActiveDirectory as the example – as earlier versions of that assembly had this issue! Problem After build, you might get this kind of error: Could not load file or assembly ‘Microsoft.IdentityModel.Clients.ActiveDirectory.Platform, Version=, Culture=neutral, PublicKeyToken=31bf3856ad364e35’ or one of its dependencies. The system cannot find the file specified. System.IO.FileNotFoundException at System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, […]

Sequence contains more than one element

Easiest way to debug Seed-method in Code-first migrations in Entity Framework

This post describes the easiest way to debug the issues that may stop your Seed-method in Configuration.cs from going through. This problem concerns typically your ASP.NET MVC projects, either on .NET Framework or .NET Core – the same basic idea should work for both situations. The solution here shows you, how you can get a little bit more information out of the process, without attaching the debugger (there’s another blog post for that: How to launch the visual studio debugger from code/) Description Entity Framework’s […]

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Fixing the “Could not load file or assembly … or one of its dependencies” error

This post describes how to fix the “Could not load file or assembly ‘[assemblyname]’ or one of its dependencies. An attempt was made to load a program with an incorrect format.” error.  Problem Especially while installing a new dev machine, and building your project for the first time, you may end up getting the following exception: Could not load file or assembly ‘[assemblyname]’ or one of its dependencies. An attempt was made to load a program with an incorrect format. No fear, though, as this […]

Sequence contains more than one element

Launching a new debugger instance from code in Visual Studio

This post describes a quick solution to launching a new Visual Studio instance for debugging the code. There’s a lot of applications for this, but where I’ve found it exceptionally useful, has been in debugging the Entity Framework’s code-first migration’s (one of the ways for database initialization) Seed-method. It is by default undebuggable, as when you are running Update-Database you can’t really use a -debug switch or anything, and there’s really no way to launch the debugger. Hence the best you can do is using […]

No Entity Framework provider found for the ADO.NET provider with invariant name 'System.Data.SqlClient'

Fixing error “No Entity Framework provider found for the ADO.NET provider with invariant name ‘System.Data.SqlClient'”

This post describes the fix to error “No Entity Framework provider found for the ADO.NET provider with invariant name ‘System.Data.SqlClient’“, which Visual Studio throws at your face when you try to run an application on any Windows-based system (or which you’ve dug out of event logs). Also, your application is probably built on .NET Framework and Entity Framework. Let’s get into it! Error When debugging/running your code you get an error like this: An exception of type ‘System.InvalidOperationException’ occurred in EntityFramework.dll but was not handled in […]


Using Dispatcher to update values in GUI elements from a background thread

If you’re developing something like a WPF app and you’ll need to update values on the User Interface based on a long-running operation that runs in a background thread (like depicted in my other blog post right here – that post is for a full-trust SharePoint solution, but the basic principle is the same!), you’ll probably need to use Dispatcher, or otherwise you’ll run into issues with the GUI elements being owned by another thread, and therefore forbidding access to them. This can result in an […]