Using HttpClient in .NET Core to Connect to APIs in C#

How do you safely connect to APIs in .NET Core using C#? HttpClient is the way to go, but doing right is important. Otherwise, you could exhaust your connection pool and cause issues in your application.

0:00 - Intro
0:56 - Blazor server demo app
3:36 - Http.Json NuGet reference
4:48 - New Blazor page: Razor component
5:55 - Data models from json data
14:15 - Editing Blazor page: Page name and navigation link
16:16 - Inject and use Http client: long way
26:40 - Editing Blazor page: Blazor page render logic
31:19 - Running Demo App
33:22 - Inject and use Http client with try - catch
43:02 - Summary and concluding remarks

Thanks to Ralfs HBK for the chapter breakdown

[magnus]

That Paste Special magic blew my mind!

[deltaphilip]

This is still relevant in 2022. When I get stuck, I search for one of your videos on the topic. I like your approach.

[zoltan.halasz]

This is my favorite kind of tutorial video. Focused, not too long, sample code. Thank you.

[jugghayd]

15:50 "I don't think there's a weather icon"
oi-rain is perfect for it!

[wayahedia]

Tim. You're a Godsend. I recently spent a couple of hours writing classes for deserializing large json files. My heart sand when you pulled down the menu to convert json to classes. ! Now I have to write code to deal with multiple different devices with httpclient. I am not using DI, primarily because I don't fully understand it or how it applies to a C# WPF prog like I am developing. This was very helpful. I always love it when something I don't expect pops up in your vids. Thanks again.

[Funkfreed]

This is awesome tim. Just one example and you connected us to hundreds of API free for consumption such as spotify or twitter APIs.

[matthewlevis]

Would be good to see how authorization would be applied to the API Client() as well e.g. Auth0

[jackieu]

Thank you for great step by step lesson on HttpClient. I have used couple of time, but the one-liner trick is so great!

[bavman]

Thanks so much Tim, you have a way of explaining things that make it easy to understand and gives context. Much appreciated!

[mrcalico]

Cool, finally some up-to-date Http client information. Thanks Corey.

[varunaggarwal]

Thanks! I want to create a project for hands-on, but was banging my head on stackoverflow and ms documentations, got this great resource, you are doing a great job.👍

[HeathInHeath]

BTW, this is a truly valuable lesson. I really learned a lot about the theory as well as the nuts and bolts of getting it working. Thanks.

[saadaldulaijan]

Thank you tim for the great content, past as json is really great 👍🏻

[jonathanvargas]

Thanks a lot! It was great how you went to complex way to simplest way for us to comprehend the whole concepts. I loved it!

[daniellister]

Loving the config file usage, good to know. Also, the one liner for a connection string is fantastic. Thanks again Tim

[elisunday]

Paste Special...and my mind was completely blown.

[williamsworkshop]

Another great video! Even as a relatively experienced dev, there's always something I'm learning from you. Very helpful.

[wmd]

Im really wishing my university would have been teaching this stuff 4 years ago. MS VS is so nice.

[pilotboba]

Nice info. I think the next step would be to refactor the httpclient code out of the razor page into a weatherService class that does all that work, and inject the weatherService into the razor page to keep your layers and responsibilities de-coupled.

[cenaruthedruid]

That was awesome, I am going to try to use this in some little app tests tonight!