OPTIONS PATTERN in ASP.NET Core | Getting Started With ASP.NET Core Series
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- čas přidán 4. 11. 2020
- When building applications, it often needs access to different configurations - be it a connection string to a database, ClientId, Secret, external API URLs, tokens, etc. By keeping these values in the application's configuration, we can use different values for different environments. ASP NET Core provides rich support for adding various configuration sources including appsettings.json, environment variables, key vault, and many more.
In this video, let's learn how to consume these configuration values from the application code you write, using the Options pattern in ASP NET Core. We will see the different interfaces supported by the pattern IOptions, IOptionsSnapshot, and see the differences between them. We can also add validations to ensure configuration values exist and enforce constraints on the values configured.
🔗Source Code - rahulpnath.visualstudio.com/D...
🔗 Options Pattern - docs.microsoft.com/en-us/aspn...
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Video Edited by my wife, Parvathy 😍
Make sure to SUBSCRIBE to the channel. THANK YOU for helping me grow this channel !! - Jak na to + styl
Best till date, exactly to the point without any clutter. Thanks !
Thank you Ajay!
Best series in .Net core web API. Anyone can learn all concepts by watching this series. It helped me in the interview process. Please give real-world examples along with explanation so we can easily co-relate concepts.
Found this video randomly and after that I watched most of your videos.
They are very helpful and nicely explained.
Glad you like them Payal and for letting me know. Do let know if there are any topics you want covered and I will try add more videos.
Same to same..
Wow. This was EXACTLY what I needed. Thank you.
You're so welcome! Do check out the full series here bit.ly/asp-net-core-series
This presentation is clear and concise and gets right to the point.
Thank you Chris. Do check the full series here czcams.com/play/PL59L9XrzUa-nqfCHIKazYMFRKapPNI4sP.html
I’m sure you’ll like it . Do let know in case you get to watch any 😀
Terse and straight to the point. I love your style. Please keep it up!
Thank you Richard! Happy that you like the style and they are helpful.
I appreciate your concise way of explaining concepts and when and how it goes wrong in detail. The latter gives me good understanding about why we use it. Thanks!
Glad it was helpful! And yes I try to introduce the concepts progressively to make it easier to relate to. Happy you found that particular way useful. Also thank you for supporting me by becoming a member!
Great video. Well structured and informative. Thank you!
Glad you enjoyed it! Do check out the other ones in this series - czcams.com/play/PL59L9XrzUa-nqfCHIKazYMFRKapPNI4sP.html
Good video. Straight to the point and well-spoken.
Thank you Vaelin! Do check out the full series here bit.ly/asp-net-core-series
I am sure you'll like it!
Another great video Rahul, just loved the way you went through separating out variables from the interpolated string before then moving them into the appsettings file. The step-by-step nature makes your videos so much easier to follow than many others!! Keep up the fantastic work.
Glad you liked it and thank you for supporting the channel! Hope you are enjoying the full series. Feel free to reach out if you have specific questions or suggestions. 😀
Awesome video. Well-structured and informative. Definitely the best video on this topic out there.
Glad you enjoyed it! Do check out the full series bit.ly/asp-net-core-series
Super and clear explanatory helped me a lot. Thanks
Thank you!
Great video Rahul. Well explained!
Glad you liked it!
Awesome explanation. Had been struggling to work out the whole concept and you made it crystal clear. Same as your video on dependency inversion principle.
Love your content!
Glad it helped Gaurang! Do check out the full ASP Series in case you haven't bit.ly/asp-net-core-series
I personally learn more from your .Net core video's.. It helps to understand the fundamentals of core..
Thank you Rajesh, glad you are finding these helpful. Do let know if you need any other topics covered.
Excellent!
Glad you liked it! Hope you are enjoying the series bit.ly/asp-net-core-series
Thank you ! This helped a lot.
Thanks Ranga!
Nice explanation, much informative. Good work bro
Thanks a lot Velkumar!
awesome Rahul
Thank you Melvis! Do checkout my other videos in this Series czcams.com/play/PL59L9XrzUa-nqfCHIKazYMFRKapPNI4sP.html. Do let know if there are any specific areas to be covered
Awesome man ...!!
Thanks!!
Thanks!
Thank you Amit and for the super thanks !
Excellent
Thank you! Cheers!
Nice explanation..
Great thanks Suryanarayan. Do check out the other videos in this series czcams.com/play/PL59L9XrzUa-nqfCHIKazYMFRKapPNI4sP.html
Thanks for this great explanation!!
#aspnetoptionspattern
Glad it was helpful Gabriel! Hope you are enjoying the series bit.ly/asp-net-core-series
amazing man
Thank you 😀
Really liked your video, one of the best with all details.
How you were able to go into CreateDefaultBuilder, is it possible in VS 2019 ?
Thank you, Ashutosh, and happy that you like them.
To navigate into functions is not yet available as part of VS - There is an open ticket for that github.com/dotnet/roslyn/issues/24349
You can use the source.dot.net/ browser, but still, the Rider experience is way better. I mostly use Rider IDE in the video so that I can easily do that within the context of the app. Hope that helps.
great
Thank you Barbaros!!
Your videos are really good. I learned so much. Do you have any examples of how one would implement Options Pattern on Azure Function v4? Function apps use local.settings.json so I am missing an example how I can use the Options Pattern with the new .Net 6 Azure Functions.
Good one 👏
Thank you! Cheers! Hope you are liking the full series bit.ly/asp-net-core-series
@@RahulNath yep subscribed immediately 🙂
@@SantoshSingh-nw8yy 🙏
Can't find how to use ValidateDataAnnotations for Azure Functions v4
👍
😀
Can you Do this in Static class.?
This is quite great pattern. Nice video as always.
Rahul any idea who came with up this pattern at start of .net core development?? Any insights you remember? 😁
Thanks, Shreyas, and glad you like the video. I am not sure who came up with the pattern in the first place. (Between I don't work in the .net core team - just in case you thought otherwise 😀)
@@RahulNath but you used to in past correct? When you were at MS!?
@@shreyasjejurkar1233 yeah that’s right, used to 😀
@@RahulNath ahh OK. Ok. No issues! 😇
Can you make a video series on SOLID principles?
Great suggestion! I will plan something.
How can i add a service with a custom created IOptions? Like services.AddScoped(options => options.Operation = "string" );
Should be possible using the Factory overrride - docs.microsoft.com/en-us/dotnet/api/microsoft.extensions.dependencyinjection.servicecollectionserviceextensions.addscoped?view=dotnet-plat-ext-5.0&WT.mc_id=AZ-MVP-5003875
Did you get a chance to try that? Let know if you are facing any issues.
which editor are you using?
I am using Jetbrains Rider - www.jetbrains.com/rider/download/#section=windows
You can also check out their Early Access Program which provides free access www.jetbrains.com/resources/eap/
Second..❤️
fourth 😂
first :)
third 😀
What is the difference between services.AddOptions and services.ConfigureOptions ?
These two articles might help understand it a bit better -
andrewlock.net/the-dangers-and-gotchas-of-using-scoped-services-when-configuring-options-in-asp-net-core/
andrewlock.net/simplifying-dependency-injection-for-iconfigureoptions-with-the-configureoptions-helper/
Let know if you have further questions and happy to do a follow up video on this.
@@RahulNath Thank you Rahul I will surly follow these articles.
@@rohan4rich Sure feel free to reach out in case you have more questions Rohan.
please explain a video of single tone scoped in distributed architecture
Can you explain a bit more on what you are looking for ? I’ve a video on Dependency Injection and lifetime scopes including Singleton in it czcams.com/video/YR6HkvNBpX4/video.html
What specific are you looking for with distributed architecture?
@@RahulNath I want a video where you can explain me about why we should use singletone design pattern.Generally I have seen your video of DI already.but I want to know specific real scenario where we should use single tone as well as transient and scope in .net core with real project base scenario.and if you make one video where we should use normal singletone class not specific to .net core app,in general .(I know the logic of singletone,scope and transient but I just want there use of real project based scenario from you) if you can make video on this with good information it will be really helpfull for me.
Thank you for your suggestion Piyali! I will add this to my list and see if I can do one soon.
I don't understand why do you use IOptions, what's the point of that interface?
It streamlines the way you can inject configuration objects into your classes, automatically refresh when values change (based on how it is set up), etc. An alternative would be custom writing all of that. What are you trying to use it for?
@@RahulNath i was woudering why not inject the class with the configuration values and use this IOptions interface. but now i understand. Thanks
Question, can Options pattern be used to pass something other than config... what if I want to pass CustomerName to a Customer class? Can I use options pattern to pass Customer name and/or other info ?? Or maybe I want to pass a GUID to a class ??? thnx in advance
It’s not restricted to config. You could pass anything. Curious why you want to pass customer name though and how you intend to get the name . If it’s in context of request why not keep it as a function parameter ?
@@RahulNath thnx... without going into too much detail, I had a scenario where my Webhook service was receiving a token. The controller would pass this to a handler service. This handler service accepts a dependency which also requires this token to be available to all its members... I tried the options pattern but somehow couldn't make it work... Token as function parameter meant if I had 10 functions, I'd have a token arg in each of them and I wanted to avoid this...thnx in advance
@@expertreviews1112 you could have a “ContextService” injected in and have a set on it to set the token which you can call at the beginning of your handler. Easiest I can think of achieving this
@@RahulNath Interesting! Many thnx, I'll give it a shot!!
@@expertreviews1112 Do let me know how that goes 👍