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Category Archives: .Net

New ASP net core features in dotnet 8

5 New ASP net core features in dotnet 8 You’ll Love this Year

Aug 22, 2023Doumer.Net, .Net Core, Asp.net core

My favorite framework, dotnet has a new version released every year. Before the final release is out, I went through each preview version and selected the 5 New ASP net core features in dotnet 8 You’ll Love this Year in no particular order. The next version will be released in a few months and several […]

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OpenId User Impersonation in Asp.net core

OpenId User Impersonation in Asp.net core With Duende Identity Server

Jun 20, 2023Doumer.Net, Asp.net core, C#, OpenIdConnect

Why will you want to impersonate a user? Isn’t it a bad thing to do? when should it be used? Let’s say you have a user of your system, this user faces an issue or a bug he/she desperately tries to explain but you just can’t understand what he is explaining. Wouldn’t it be good […]

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CQRS Command Validation

CQRS Command Validation with MediatR in Asp.net Core

Apr 13, 2023Doumer.Net, .Net Core, Asp.net core, C#

Validation is an important part of APIs. When using a clean architecture, or another modern application design pattern, most often we leverage CQRS’ commands for actions like POST, PUT, etc. These commands have side effects. While those without side effects like GET requests are implemented in queries. Commands most often need some sort of asynchronous […]

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Uploading Your Xamarin or MAUI iOS app to the App Store Without VS for Mac

Feb 26, 2023Doumer.Net, .NET MAUI, MAUI, Xamarin, Xamarin.Forms, Xamarin.iOS

This is a short article with a solution to a problem I couldn’t find on the internet. I upgraded VS for Mac to version 17.4.5 recently, and upgraded Xcode to the appropriate version as stated in the docs (https://learn.microsoft.com/en-us/visualstudio/releases/2022/mac-release-notes). As it happens often, I had a bad surprise after this. I tried uploading an app […]

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Migrating Old Asp.net Authentication to Asp.net core Identity with OpenId Connect

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Jan 8, 2023Doumer.Net, .Net Core, Asp.net core

This is my first article of 2023. I think it is the first in a series of articles about migrating an old ASP.net web app to Asp.net core on dotnet 7. Today, we will talk about migrating Old ASP.net authentication to Asp.net core identity with open id connect. Recently, I’ve had to work on the […]

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End to End Encryption with RSA in Kotlin and C sharp

End to End Encryption with RSA in Kotlin and C sharp

Nov 8, 2022Doumer.Net, C#, Cryptography, Kotlin

Messaging services like WhatsApp keep bragging about end-to-end encryption (E2EE) telling us how it keeps our data safe even if messages we send are intercepted by a third party. Have you ever wondered how this works? how come they are able to secure our messages over the internet ? Well, I’ve asked myself those questions […]

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Quick Tips: Debug Google Play Billing in Xamarin Android Apps

Jul 17, 2022Doumer.Net, Xamarin, Xamarin.Android, Xamarin.Forms

Hey everyone! Here is a new article under my series of Quick Tips posts. What is this series of posts about? (I hope you asked yourself ☺️). Well, you know when you want to implement a functionality or do something technical that is well documented, but the documentation for that specific thing is not centralized? […]

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HTTP Request Performance in Dotnet MAUI

4 Steps To Improve HTTP Request Performance in Dotnet MAUI / Xamarin

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Jun 22, 2022Doumer.Net, .NET MAUI, MAUI, MAUI, Xamarin, Xamarin Forms Tips and Tricks, Xamarin.Forms

Hello friends, today we will talk about a performance issue that does not only affect mobile apps but other types of Dotnet client applications too. That is, HTTP request performance. Making HTTP requests is something we should do cautiously because it consumes a lot of resources that are difficult to release later. This can impact […]

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Getting Offline Country Data in Dotnet MAUI or Xamarin.Forms

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May 14, 2022Doumer.Net, .NET MAUI, MAUI, Xamarin, Xamarin Forms Tips and Tricks, Xamarin.Forms

Hello Everyone. As a mobile dev, you might have come across a situation where you needed to add Country information in your app. As allowing the user to select a given country, or a specific region in that country. I’m sure while thinking about it, the first thing that comes to your mind is tapping […]

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Playing With New .NET MAUI Views: Border, Shadow & GraphicsView

Mar 13, 2022Doumer.Net, .NET MAUI

.NET MAUI, Microsoft’s new cross-platform UI framework to build apps in a single project is soon coming. .NET MAUI is the evolution of Xamarin Forms thus, it has every UI View Xamarin Forms offered and in addition to that, a few new UI views. We are going to discuss how to use some of these […]

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