Dan Patrascu
@danpdc
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594
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8,266
📽️YouTube: 📖Blog: 📧Newsletter:
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Pinned Tweet
The past few months I've been talking to conferences, user groups and universities across 3 different countries. It's always a great pleasure for me to participate in such events and I'm always happy to talk towhoever wants to listen.
My last experience at
#PeakIT06
was a blast!
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I see may people around Microsoft making fun of the Twitter rebranding. Folks, you literally renamed Azure AD to Entra ID a couple of weeks ago. I'd keep quiet :)
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I'm not a fan of AutoMapper. But if you use it, you should definitely use projections more often than I see around code bases!
If you like this video, subscribe to my channel for more:
#programming
#dotnet
#csharp
#programmingtips
5
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222
Here's how to add authorization to .NET 7 Minimal API.
If you enjoyed this, you might want to subscribe to my YouTube channel for more good stuff:
#dotnet
#aspnetcore
#csharp
#programming
#programmingtips
2
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183
Is this the most underrated C# feature?
If you enjoyed this, you might want to subscribe to my channel:
#dotnet
#csharp
#programming
#programmingtips
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Printing Pretty JSON in C#! If you enjoy this video, you might want to subscribe to my channel:
#dotnet
#csharp
#programming
#programmingtips
3
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169
Here's how to implement global exception handling in
#aspnetcore
via an exception filter in just 30 seconds.
You might want to subscribe to my channel if you enjoyed this:
#dotnet
#programming
#programmingtips
5
35
165
Custom authorization policies are insanely powerful in
#aspnetcore
If you enjoyed this video, you might want to subscribe to my YouTube channel:
#dotnet
#csharp
#programming
#programmingtips
1
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155
Would anybody be interested in a video about
#aspnetcore
Web API security? Like a cheat sheet for most common vulnerabilities and how to fix them.
25
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It's popular to globally handle exceptions in
#aspnetcore
within middleware. But there's another way we could do it in filters. Here's how it works!
#Dotnet
If you enjoyed this video, you might want to subscribe to my YouTube channel:
2
23
149
We are tempted to perform model validation in
#aspnetcore
controllers. However, this is not clean. A better way is to use action filters.
If you like this content, subscribe to my channel for more:
#dotnet
#programming
#programmingtips
#cleancode
4
35
148
Unit testing .NET Minimal APIs is actually very easy!
If you enjoyed this, you might want to subscribe to this channel:
#dotnet
#csharp
#programming
#programmingtips
2
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142
Adding dependency injection in Azure Functions might be a little bit tricky. But here are the simple steps to achieve this without any head aches.
Subscribe to my channel if you enjoyed this video:
#azure
#dotnet
#serverless
#programming
#programmingtips
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😎 Route groups are really cool thing in .NET 7 Minimal API.
If you enjoyed this, you might want to subscribe to my channel:
#dotnet
#csharp
#programming
#programmingtips
0
23
122
Here's how the required modifier can make your app better!
If you enjoyed this, you might want to subscribe to my channel:
#dotnet
#csharp
#programming
#programmingtips
2
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116
Here's a very practical example of the Action<T> class. I use it all the time!
If you enjoyed this, you might want to subscribe to my
#youtube
channel:
#dotnet
#programming
#programmingtips
0
20
116
❗Here's how you can use switch expressions to modernize your codebase!
✅If you enjoyed this video, you might want to subscribe to my YouTube channel:
#csharp
#dotnet
#programming
3
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118
I'll say it again! Every SINGLE time you add a library to your project, you add technical debt!
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In the long run, AutoMapper causes more problems than it solves. That's why I prefer to not use it at all and keep things very simple.
If you enjoyed this video, you might want to also subscribe to my YouTube channel:
#dotnet
#csharp
#programming
8
27
111
How to do model validation in .NET 7 Minimal API in 4 EASY steps!
If you enjoyed this, you might want to subscribe to my
#youtube
channel:
#dotnet
#programming
#programmingtips
#aspnetcore
0
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108
IHttpClientFactory in
#aspnetcore
101 in under 1 minute!
If you enjoyed this video, you might want to subscribe to my channel:
#dotnet
#programming
#programmingtips
1
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107
Here's how to add
#Azure
Key Vault as a configruation source in your
#aspnetcore
app.
If you enjoyed this video, make sure to subscribe to my
#youtube
channel:
#programming
#programmingtips
#dotnet
#azure
2
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100
Don't get fooled by shiny infographics. Here's how async programming really works and what problem it actually solves.
#dotnet
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So, the latest Java seems to be now on feature parity with C# from 2 years ago. Nice!
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This Sunday, I'll start live streaming again building a school management app with microservices orchestrated by .NET Aspire and using Blazor SSR for the front end. Make sure to not miss it, so hit the "Notify me" button.
#dotnet
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So, how do we create
#jwt
in
#csharp
? It's not that complicated and if you get to understand these very simplye building blocks, then auth will be a breeze in your
#aspnetcore
apps.
#dotnet
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#logging
in Program.cs is actually very easy in
#aspnetcore
.
If you enjoyed this video, you might want to subscribe to my YouTube channel:
#dotnet
#programming
#programmingtips
1
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89
Authorization in
#aspnetcore
doesn't need to be complicated. Here's my simple approach to it:
#dotnet
#programming
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Everybody talks about REST and how we should conform to it. However, I think that REST works great for CRUD, but in reality most business applications are task based. So how do we balance full REST compliance and practicality?
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@yb_fedev
I know this vid has C# in the title, but the explanations about floating point arithmetics standards is the same for all languages. JS does only implement the 64 bit format. Alternatively there is a Decimal lib that might help.
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Here's an
#aspnetcore
web api security checklist. It's based on the 3 most common vulnerabilities. With clear practical examples and how to mitigate these risks.
Video:
#dotnet
#security
#programming
0
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I have worked with Blazor (mostly server) since it was an experimental project. I have built production apps with it. I've done trainings and courses on it. But the new Blazor, really puts me on my knees. Nothing is working as it worked previously. For a lot of hours I'm fighting
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Building a serverless REST API from scratch based on Azure Functions is a good pretext to go deeper into some important topics. Curious?
Here's a full video on this:
#dotnet
#Azure
#serverless
#programming
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Here's how to work with HTTP bodies in Azure Functions in just 30 seconds!
If you enjoyed this video, you might want to subscribe to my channel:
#azure
#dotnet
#programming
#programmingtips
3
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I am really sad that more and more
#dotnet
creators start lashing out at other creators insinuating that they are bad engineers. And I'm equally sad there are creators that basically call C# developers stupid and uneducated if they don't share their narrow view on some paradigm.
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BIG ANNOUNCEMENT! After much consideration, I have decided to start a newsletter! This is a logical step pursuing my mission to become a mentor for anybody who thinks I can offer some valuable directions. That's why this newsletter is totally different than most others. It will
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If you want to understand how authentication works in Blazor, I think this is a good start!
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OWASP mentions the lack of rate limiting as a security vulnerability of APIs. This was cumbersome to implement in
#aspnetcore
until
#dotnet
7. Now we have built in support for this!
If you enjoyed this video, you might want to subscribe
2
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Today
@nickchapsas
asked DotNet Twitter about
#DotNet
YouTubers, bloggers that they follow. On of the replies also mentioned my channel, Codewrinkles. Sure, it's only one mention but I take this as a motivation to keep on the work.
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Generating links is one of the most important aspecects of web development. When it comes to the .NET MInimal APIs, link generation is important for redirects and to remain compliant to the HATEOAS REST constraint. Here's everything you need to know about link generation in just
1
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Asynchrony vs Parallelism (thread)
Sometimes there is a common misconception that async/await will make our code faster. I'd argue that most of the times this is not true.
#dotnet
#csharp
#dotnetdeveloper
#asynchronous
#programming
#softwareengineering
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Working with EF Core in Blazor Server is still a mystery for a lot of people. In this video I try to demystify it by showing how to implement full CRUD operations in Blazor Server using EF Core and doing it the right way.
#dotnet
#blazor
#aspnetcore
#crud
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Another day, another
#dotnet
dilemma. I've seen people creating interfaces that only contain properties. What do you think about this?
You don't get anything from it as you still need to write those properties in each class. I'd probably use abstract classes. What about you?
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Working on a
#Blazor
server app and I switched to VS instead of Rider. The only reason I did this is the ability to use
@EngstromJimmy
's Blazm VS extension. Saves a lot of time. If you're curious, I even did a video about it:
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I use the concept of "registrars" to keep my
#AspNetCore
startup classes clean. I wanted to create a dedicated registrar for
#AutoMapper
and
#MediatR
and didn't know how to name it. Ended up naming it "BogardRegistrar" 🤣🤣
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@abhibisht97
@GergelyOrosz
It doesn't even need to be large. As soon as it's not pure CRUD anymore things get complicated.
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THIS causes a lot of headaches to
#csharp
beginners. It's a very popular source of bugs, so make sure you always have this in the back of your head.
If you enjoyed this video, you might want to subscribe to my channel:
#dotnet
#programmingtips
2
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52
I just saw in a Blazor presentation at
#dotnetconf
how someone used DbContext diectly in an interactive server component. Cmmmon guys! No! No! No! No! These components use websockets. Use IDbContextFactory instead!
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I thik this video is a must watch if you want to understand how Blazor components with interactive server mode work, how this might affect the DbContext and what can we do about that!
#dotnet
#blazor
cc
@CHBernasconiC
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@BelloneDavide
If you have interfaces and implementations both in the same module, it means you don't need interfaces.
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One of the problems with TDD is that its advocates behave like door-to-door Bible sellers. They try to impose their way of working as the only one leading to salvation. And they're using mostly flawed argumentation that wouldn't compete even against a high-school debate team
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When it comes to Blazor Server, auth is a totally different beast! This playlist will tell you EVERYTHING you need to know about it!
#aspnetcore
#Dotnet
#blazor
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Here's how you can move your command validation in MediatR pipeline behaviors and keep your handlers clean.
If you enjoyed this video, you might want to subscribe to my
#youtube
channel:
#dotnet
#aspnetcore
#programming
#programmingtips
1
11
46
If you want to get started with
#dotnet
minimal API, I have published a full course in which I create a basic REST API from scratch using
#cleanarchitecture
,
#repository
pattern,
#cqrs
:
#programming
#cleancode
#softwarearchitecture
#softwaredesign
0
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One of the main frustration I have as a
#dotnet
YouTuber is that videos, that are certainly useful for most of those who are watching, perform very bad. Clickbaity or hot take videos perform excellent.
I think the first category brings more value, but the second more
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Ok, Blazor SSR sounds great in theory, but I see a lot of pitfalls when put to practice and we want to enhance it with components that use interactive server mode. How should we check for authz in this case? How should we use EF Core? Then, what if somebody changes one component
12
5
44
Here's how we can connect to
#Azure
KeyVault from an
#aspnetcore
application the right way (Without having client ids and secrets in appsettings.json, which seems to be very "popular" in other tutorials).
If you enjoyed this, you might want to subscribe to my YouTube channel for
1
8
42
Here's how you can add a Blazor WASM app to an existing AspNetCore API and serving it from the same host.
If you enjoyed this video, you might want to subscribe to my YouTube channel for more:
#dotnet
#dotnetcore
#blazor
#programming
#programmingtips
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I viscerally disagree with people claiming prophetically that the future of C# is functional. Literally each functional construct in C# is lowered to regular OOP. The fact the some folks prefer one style over the other doesn't change the reality/facts.
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We've done some experiments and it seems that AI (Copilot to be precise) is definitely overhyped.
❌code quality didn't improve
❌sprint velocity didn't improve
So, right now (and I quote some of our devs) "it's just a little bit better than Resharper".
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If you are a
#dotnet
developer or interested in this tech, you should definitely folloe
@DevLeaderCa
's YouTube channel. IMO he has one of the best content, without BS that's just trending and tought that come from experience
1
1
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Here's a possible way to generate random strings in C#!
If you like this video, you might want to subscribe to the Codewrinkles channel:
#csharp
#dotnet
#programming
#programmingtips
2
4
34
Has anybody ever seen a REAL PRODUCTION project that is pure
#DDD
, or pure
#CQRS
, or pure
#cleanArchitecture
, or pure
#EventSourcing
? You know, like the ones that are always presented at conferences.
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From my POV, the software development process is a hell made of meetings, estimations on wrong assumptions, endless discussions. I think everything went South the moment we started to replace common sense with pointless certifications and out of context processes.
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The first livestream after one year was quite a marathon! Here it is, in case you missed it!
#dotnet
1
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Working with CSV files is something that I needed to do in almost every project. So, I thought it might be useful to share how easy it is to work with CSV files in
#dotnet
and
#csharp
#programming
#programmingtips
4
8
31
Here's why you should NEVER use doubles for prices, VAT calculations and other important stuff!
If you enjoyed this video, you might want to subscribe to my channel for more awesomeness :)
#Dotnet
#csharp
#programming
#ProgrammingTips
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5
32
So, I'm trying to catch a SqlException in
#dotnet
/ ef core and I'm interested to only do something if it's a unique constraint violation. These SqlException have an inner exception that contains a number. I believe that 2627 is the number for unique constraint violation. But are
6
3
29
@traversymedia
@elonmusk
Quite the contrary in my case. I still see only tech related stuff in my timeline. The only aggressive posts are those against Musk coming from people who in theory appreciate thoughts diversity, but it seems they don't.
0
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I know everyone is excited about .NET 8. However, this is a kind reminder to not focus on frameworks, focus on beeing an engineer! The hype might derail your attention from this. It's useless to know all the new framework features if you can't well engineer an app
#dotnet
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So, I just upgraded my setup with a new desktop. I9 processor, 64GB RAM and an RTX 3080. Hopefully, video editing will be much faster now. Preparing for a great 2024 🚀🚀🚀
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I was not a
@MagnusCarlsen
fan, but the way he was just locked in, calculating in depth in a winning position in game 8, staying at the table, concentrated is a life lesson, not only a chess lesson. Magnus just became a role model for me.
#CarlsenNepo
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As a creator in the
#dotnet
space, I'm particularily happy that this year I managed to get
@anton_t0shik
,
@codeopinion
,
@mjovanovictech
,
@jfversluis
,
@amantinband
,
@CHBernasconiC
and
@gsferreira
to share their opinion on what makes a great software engineer. All of them in one
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