Trying to understand dependency injection and having watched almost every tutorial on youtube about it this is one of the best (and relatively short!) - looking forward to more content and any videos covering examples of the different types of dependency injection maybe? (constructor, property etc)
As I understand there are different types of dependency injection - was just curious to see actual real examples of say constructor and property dependency injection and maybe some common use cases (the default .Net web api template in Visual Studio does show this but I find it a little confusing to follow)
Gerald... thank you for explaining the way I explain... hitting the important points and the why. I'm sharing this with people I mentor in OOP development! Thanks for the great explanation.
This is the only video that made sense to me; I can properly understand all the docs that mention it now. I don't get why many tutorials make it so complicated and use different frameworks with many abstractions instead of explaining the basic concept. Your explanation, on the other hand, was clear and concise. Do you have any plans in making a rest web api in ASP NET following some architecture for scalability? Many of the videos I have seen are somewhat lacking and make use of a lot of dependencies and interfaces without ever really explaining what they do. Regardless though, thanks so much for the video!
2 роки тому+6
Thank you, Gerald. I had an idea about D.I., and now, your explanation has confirmed I had It right and has given me a wider understanding of it. Keep the great job!
I got this asked in an interview, and even though I understand how it works because I currently use it in my job, I didn't know how to explain it. So thanks.
Wow i finnaly understand it. Now i also understand why Dependency Injection is used in tests which are testing user input, its much smarter than force fake input to console using StringReader and Console.SetIn method. Thanks again!
Have seen a lot of Videos on Dependency Injection, but this is like the GodFather of all. You videos have great clarity of concept. Keep doing such videos :)
You explain perfectly, a very simple and useful video, after it became clearer, thanks! And cool English, clear pronunciation, simple words, it's cool for foreigners like me)
This is really underrated content! I want to know more about DI and containers in Xamarin. Would be great if we could build something like Prism DI from scratch. This topic is harder to process than others, but it's really valuable, you can add more screenshots or illustrations, it will make it easier to understand. Good job and thanks for your effort!
Thank you so much! I’ll think about it. As mentioned in the video; there are a lot of good options already so you probably want to stick with one of those unless you have really good reasons not to. Nevertheless it’s always good to build something yourself to really understand the inner workings
I've started a small attempt at making a Prism-like IoC container. It's pretty basic right now. Please feel free to do what you want with it. I haven't updated it in a couple weeks. github.com/mdh09/MyFlyIoc
Great video! I would benefit from looking at a project that is consuming DI. I would also like to see some practical comparison of the built in DI vs TinyIOC vs AutoFac.
your explaination is really helpful, I just came across the "dependency injection" concept and have no idea what it is. But after what your video, I think I understand it a little bit. Thank you!
Awesome explanation on interfaces and containers, kindly share a video link on containerization based on frameworks, any .Net framework is fine. Thanks
Where Can I look for this type of Term? "Dependency Injection" I try looking solid principle in C# but found nothing about this. I have found it through someone's video he mentioned "DIP", "Interface Segregation Principle", etc. What is the exact name or keyword to find all related content concerning principles? Also thank you for the brief explanation about interfaces it helps me a lot understand the core concept of interface in C#.
Thank you, fairly new to this. Very much from a procedural background. Dubious still of the whole OO Class based paradigm. Got lost on containers to be honest but will look further.
Great Video.. Suggestion:: Just take an example(logger) and code along(using container, Interface) like you did for Messaging centre video. It would be easy for beginners like me to grasp easily by seeing the output. Thanks!!.
I like it. But fortunately, if you don't, you can easily change your IHair interface implementation.. 😄 Thank you very much for beautiful thorough explanation of dependency injection concept...
Thank you! For testing... Imagine that you are dependant on a service that gets stuff from a remote server through the GetStuffService. If you're doing unit tests, you don't want to actually go out and do that call to the remote server. To overcome that, you make an IGetStuffService interface and implement that in the GetStuffService. Now, for unit testing you make a MockGetStuffService that also implements the IGetStuffService. But this implementation just returns static data instead of going out to the remote server to get it. This makes the unit tests faster, predictable (you know what data is supposed to come back) and less prone to errors. Does that make sense?
Thanks for the video, quick question, suppose we Inject and Interface `car`, which has implementation `make` into two different classes `ford` and `toyota`, so when using the method for injected interface how it know which method implementation to pick up from `ford` or `toyota`?
So in short it is a way of passing in a object that will be used instead of initializing an object within the class? What is the benefit of this over initializing something in a public static class and referencing that as needed, or storing methods in the static class to be used?
Very good explanation. Showing how its accomplished without injection and then with injection help it click for me. Wouldve loved to see the example be carried all the way through with the container but Im sure you did that in later videos. Thank you!
i would love to know how to use a DI container to resolve a viewmodel against a ContentView. I have a system im place that works for ContentPages through a ViewModelLocator, but can't get it to work for views.
Great video! I like to give real world examples with tangible things when I can. Do y'all have a go-to real world example of DI? Mine is the idea of a pen and ink cartridge. The high level overview of the explanation the pen doesn't care about what cartridge gets put in it as long as the cartridge implements ICartridge.
@@jfversluis thank you! You're doing great on these videos. I like the changes you've made like the lighting and some of the structure. It brings the videos to the next level!
Nice Gerald, fairly succinct. Now if you can do a video on Blazor Dependency Injection, specfically Server vs. WASM. Server is relatively easy, I have done that, but I had a research project that used server dependency injection and needed to use WASM and the way we setup D.I. in server is easy, but WASM was a bit more challenging. Would be great to see that and comment as well as with WASM you have all the specifics of D.I. with Scoped, Singleton, Transient, etc. I was using Mudblazor specifically the Dialog method. Ty
@@jfversluis Middlewares, different types of Filters, boxing unboxing, How linq will work, what are singleton, transient and scopes, still there are lot of concepts
I love this channel , I learn a lot, I think a great topic to discuss will be how to use design patterns with xamarin, I always have struggle with that. Thank you very much.
@@jfversluis I 've been working for almost a year now in the states, and I assure that almost any pattern is useful, but by sure factory, decorator , observable, those will be great to know. I think the most used in xamarin will be adapter, cause we use adapter for list in xamarin native, but you know anything is useful, thank you very much for your time I really appreciate it.
Thank you Gerald, great video! I took a project over recently where not only such commonly used things like logging, but basically everything (e.g. business logic) was implemented as dependencies. It makes code changes a headache because every time I amend business logic, I have to start with modifying the interface first, then do actual implementation. Does it make sense to use interface-based dependency injection for business logic in your opinion?
Hm that sounds a bit like overkill. Do you have the chance to ask the original author(s) to ask what the reason for that was? Everything _can_ make sense. But like you say; if you feel less productive while doing so and you don't really have a compelling reason to keep doing then I would say: no, it doesn't make sense.
Gerald please can you make a video or get me an orentation about how to create a sort by ascending or descending on listview. I am struggling to find something that could function.
The value of interfaces clicked for me while watching this video, thank you so much for your easy to understand explanations!
That is great! Glad you liked it :)
1) Clear understandable English for non-native listeners 2) very good technical explanation 3) subscribed :)
Aw thank you! Appreciate kind words! :) welcome aboard, let me know if you need anything!
Now that you've learned dependency injection as a concept, let's see how to apply it to .NET MAUI: ua-cam.com/video/wkgbvMlrMhU/v-deo.html&pp=gAQBiAQB
Thanks for this video. I discovered that I've been doing Dependency Injection for years - I just didn't know it was called that!
That’s good! At least now you know 😄
Same 😅
I spent an hour reading through blogs and SO. Your explanation cleared it all for me. Awesome work !
So happy to hear that, thanks Himanshu!
Great synthesis about dependency injection and interface! It helped to make it clearer for me. Thank you!
Great! Glad to be of assistance!
Thanks a ton for this vid! This is the ONLY video on UA-cam that explains Dependency Injection properly
Wow thank you so much! :)
This video removed all my doubts about dependency injection, thank you!
Perfect, glad to hear that!
Thanks for breaking this down. Makes so much sense now.
Thank you! That is great to hear! :)
If possible please, also cover differences between
* Singleton
* Transient
* Scoped
Thanks Axemasta! I love how people are starting to help out each other here 😄
@@Axemasta Thank you 😄.
@@jfversluis True Story
Thank you for this great explanation!
You’re very welcome!
Trying to understand dependency injection and having watched almost every tutorial on youtube about it this is one of the best (and relatively short!) - looking forward to more content and any videos covering examples of the different types of dependency injection maybe? (constructor, property etc)
Wow, thanks! That is great to hear!
What would you like to know about constructor and property injection?
As I understand there are different types of dependency injection - was just curious to see actual real examples of say constructor and property dependency injection and maybe some common use cases (the default .Net web api template in Visual Studio does show this but I find it a little confusing to follow)
I know! Sometimes, we don't need a whole breakdown of a feature lol
@@jfversluis t
Thank you, Gerald for a great explanation. Awesome vid!
Thanks! ☺️
Gerald... thank you for explaining the way I explain... hitting the important points and the why. I'm sharing this with people I mentor in OOP development! Thanks for the great explanation.
That is amazing to hear! Thank you so much! What are other concepts you have to explain to them? Always looking for some inspiration:)
You are really really good at teaching and breaking down concepts. Thank you so much.
Appreciate it, thanks!
My heartful appreciation for your explanation of D/inject.
Thank you so much Abdul!
Thank God I picked this video. Thing is I actually understood it in the first explanation. And I just knew it was gonna be an amazing video
Thank you so much friend!
This is the only video that made sense to me; I can properly understand all the docs that mention it now. I don't get why many tutorials make it so complicated and use different frameworks with many abstractions instead of explaining the basic concept. Your explanation, on the other hand, was clear and concise.
Do you have any plans in making a rest web api in ASP NET following some architecture for scalability? Many of the videos I have seen are somewhat lacking and make use of a lot of dependencies and interfaces without ever really explaining what they do.
Regardless though, thanks so much for the video!
Thank you, Gerald. I had an idea about D.I., and now, your explanation has confirmed I had It right and has given me a wider understanding of it.
Keep the great job!
Thank you Andrián! That is wonderful to hear! Let me know if there are any topics you’d like to learn about
I got this asked in an interview, and even though I understand how it works because I currently use it in my job, I didn't know how to explain it. So thanks.
Hope you do know now! Thanks for watching Charles!
Simple and understandable with great presentation. Thank you so much.
love your voice. soothing to the ear and good explanation.
i gots alot to think about form this 17min vid. :D
Haha thank you! 🥰
What a great explanation, thank you so much! Definitely saved me a lot of time from having to read through a bunch of articles :D
That you Matthew! Glad it clicked for you now 😄
Wow i finnaly understand it. Now i also understand why Dependency Injection is used in tests which are testing user input, its much smarter than force fake input to console using StringReader and Console.SetIn method. Thanks again!
Perfect! Glad I could help with that :)
Have seen a lot of Videos on Dependency Injection, but this is like the GodFather of all. You videos have great clarity of concept. Keep doing such videos :)
Wow, thank you! That is amazing to hear!
of course we want to see!
Thanks buddy for explaining DI in easy form. Please make specific video for design patterns.
What design patterns are you thinking of?
Great explanation. I must have been asleep in college when they talked about DI, so simple.
Thank you!
Watched a lot, but this one given the answer. Great, thank you.
Awesome! Thanks!
This is the best explanation I have seen so far 👏
Thank you so much 🥰
Thank you. The way u explained it's really good.
Thank you! That is wonderful to hear! Any other concepts you'd want to learn about?
Спасибо двойник Папича за понятное объяснение!
You’re welcome!
Simple and amazing explanation. Thank you for such a wonderful video.
You explain perfectly, a very simple and useful video, after it became clearer, thanks! And cool English, clear pronunciation, simple words, it's cool for foreigners like me)
That is wonderful to hear Aliaksei! Where are you from? This made my day! Thanks for reaching out and letting me know!
This is really underrated content! I want to know more about DI and containers in Xamarin. Would be great if we could build something like Prism DI from scratch. This topic is harder to process than others, but it's really valuable, you can add more screenshots or illustrations, it will make it easier to understand. Good job and thanks for your effort!
Thank you so much! I’ll think about it. As mentioned in the video; there are a lot of good options already so you probably want to stick with one of those unless you have really good reasons not to.
Nevertheless it’s always good to build something yourself to really understand the inner workings
I've started a small attempt at making a Prism-like IoC container. It's pretty basic right now. Please feel free to do what you want with it. I haven't updated it in a couple weeks. github.com/mdh09/MyFlyIoc
Thank you! this was the best video.
Awesome! Thank you so much!
This was a very well constructed video - really enjoyed it!
Thank you Alexia! Appreciate the kind words! Any other concepts you would like to see?
Great video! I would benefit from looking at a project that is consuming DI. I would also like to see some practical comparison of the built in DI vs TinyIOC vs AutoFac.
Thank you Tim! There is definitely more to come about this!
your explaination is really helpful, I just came across the "dependency injection" concept and have no idea what it is. But after what your video, I think I understand it a little bit. Thank you!
That is great! Thank you so much!
최고 입니다!! 2년 전이라 엄청 젊어 보입니다 !!
Haha thank you!
Thank you so much for explaining interface stuff in DI
Sure thing my friend! Glad you liked it!
No-One on this UA-cam Explained this concept better than you. Good Job Man!!!!
That is so very nice of you, thank you so much!
Awesome explanation on interfaces and containers, kindly share a video link on containerization based on frameworks, any .Net framework is fine. Thanks
It's worth watching.. nice video..made clear concepts.
Thank you!
Where Can I look for this type of Term? "Dependency Injection" I try looking solid principle in C# but found nothing about this.
I have found it through someone's video he mentioned "DIP", "Interface Segregation Principle", etc. What is the exact name or keyword to find all related content concerning principles?
Also thank you for the brief explanation about interfaces it helps me a lot understand the core concept of interface in C#.
Thank you, fairly new to this. Very much from a procedural background. Dubious still of the whole OO Class based paradigm. Got lost on containers to be honest but will look further.
Great Video.. Suggestion:: Just take an example(logger) and code along(using container, Interface) like you did for Messaging centre video. It would be easy for beginners like me to grasp easily by seeing the output. Thanks!!.
I still want to make a follow up one with some code, this is a great suggestion. Thank you!
I wish you could explain life as well as you did DI. Great job
Haha you're on your own for that one, but please let me know when you figure it out! Glad I was able to help with this topic though! 😆
Good explanation... i have used that (react, .Net core) , but it was difficult to me to explain it... until now!... thanks!
You have no idea how big of a compliment this is! :) thank you!
To put it simply, DI is basically passing classes to other classes via parameter
Yes and no, that is a nice summary but there is also property injection, in that case it’s not a parameter.
Awesome, thanks Gerald. Clear and concise!
Glad you enjoyed it John, thanks!
Great explanation. Learn, Laugh, Share & Dev for sure.
Thanks! ☺️
Enjoyed watching this video and your speaking.
Wow! Thank you so much!
Just rewatching this myself... _WHAT_ is up with that hair?! :D
It's looks good 😁
@@user-oj2cu6qg5g haha thank you!
Reminds me of the movie, "There's Something About Mary". 😃
@@scottferguson866 i can assure you that was not the same😆
I like it. But fortunately, if you don't, you can easily change your IHair interface implementation.. 😄 Thank you very much for beautiful thorough explanation of dependency injection concept...
Lovely start point! Now I got it!
That is awesome to hear! Any questions you have left?
really well explained, thanks!
That is so nice of you, thank you!
thanks for your simple easy to understand explanation, you got 1 new sub.
Woohoo! Awesome and welcome! Thank you!
good thing i clicked on this video..thanks
I’m also glad you did! Thanks for watching!
Thanks. Super explanation 🔆
Yay thanks! Glad it was helpful!
After 4 years of my graduation, I finally learned this shit! hahaha
Thanks for the amazing content.
Haha well I’m glad I was able to help out there Tainara!
Thank you for watching!
Very nice explanation!
Thank you!
Your explanation is great. Thanks for this video!
Only thing that I didn’t get yet is how can DI effectively helps with testing?
Thank you! For testing... Imagine that you are dependant on a service that gets stuff from a remote server through the GetStuffService. If you're doing unit tests, you don't want to actually go out and do that call to the remote server. To overcome that, you make an IGetStuffService interface and implement that in the GetStuffService. Now, for unit testing you make a MockGetStuffService that also implements the IGetStuffService. But this implementation just returns static data instead of going out to the remote server to get it. This makes the unit tests faster, predictable (you know what data is supposed to come back) and less prone to errors. Does that make sense?
@@jfversluis Absolutely. Thank you so much for your answer. I am finally getting a better understand with dependency injection.
I am not sure why so less likes on this, Very good explanation :-)
Haha I know, right?! Thanks so much!
Quite useful and well explained.. thanks 🙏
Thanks!
Great video, thanks !
Glad you liked it Antoine! Thanks!
Thanks for the video, quick question, suppose we Inject and Interface `car`, which has implementation `make` into two different classes `ford` and `toyota`, so when using the method for injected interface how it know which method implementation to pick up from `ford` or `toyota`?
Great video, truly cleared up Dependecy Injection for me. Thanks
That is wonderful to hear thanks for letting me know!
Thank you for this explentation
I hope it was clear :)
So in short it is a way of passing in a object that will be used instead of initializing an object within the class?
What is the benefit of this over initializing something in a public static class and referencing that as needed, or storing methods in the static class to be used?
Very good explanation. Showing how its accomplished without injection and then with injection help it click for me. Wouldve loved to see the example be carried all the way through with the container but Im sure you did that in later videos. Thank you!
Awesome Garrett, glad it was helpful, thanks for letting me know!
Good job! Bravo
Thank you my friend!
GREAT video!
Thanks so much Ruben!
explained smoothly....upvote
Great! Thanks :)
i would love to know how to use a DI container to resolve a viewmodel against a ContentView. I have a system im place that works for ContentPages through a ViewModelLocator, but can't get it to work for views.
Sorry for never responding to this one, it slipped through! 😴
Have you been able to figure it out?
I love it thanks!!!!
Great! Thanks!
Thanks!
Thank _you_!
Great video! I like to give real world examples with tangible things when I can. Do y'all have a go-to real world example of DI? Mine is the idea of a pen and ink cartridge. The high level overview of the explanation the pen doesn't care about what cartridge gets put in it as long as the cartridge implements ICartridge.
Great example Michael! I should’ve added something like that. Thank you!
@@jfversluis thank you! You're doing great on these videos. I like the changes you've made like the lighting and some of the structure. It brings the videos to the next level!
thank you
You’re very welcome!
great video! thanks!
Glad you liked it! Thank you!
@@jfversluis I'll be happy if you could make a video about threads vs. tasks in c# :)
Automatic Dependency Containers in .NET 5 please for absolute beginners :) Thank you for this in depth detail about DI
Great suggestion! I will look into it! Thanks!
@@jfversluis Thank you so much :) I'm an absolute beginner regarding with C# and .NET 5.
thank you. at 02:00 but what if we will use static class with static function? we will not have to make new instance
Sure if you do everything static you can, but that kinda defeats the purpose
What happens if you try and register multiple implementation of the same type, e.g., ConsoleLogger and FileLogger?
I think it registers multiple but will only resolve the first one. It depends a little on how you register and request it though.
love it! like the hair as well :)
😂😂 thank you!
Beautiful explanations man! Just subbed👌... I wanna check out your other videos.
Welcome aboard my newly subscribed friend! What other topics are you interested in?
So clear and simple. Love the content.
Thank you! That was exactly what I was going for!
Great video. Explained very well.
Appreciate it Ted! Thanks!
Great explanation. Thanks for this. Really useful.
Awesome! Thanks! 😄
Nice Gerald, fairly succinct. Now if you can do a video on Blazor Dependency Injection, specfically Server vs. WASM. Server is relatively easy, I have done that, but I had a research project that used server dependency injection and needed to use WASM and the way we setup D.I. in server is easy, but WASM was a bit more challenging. Would be great to see that and comment as well as with WASM you have all the specifics of D.I. with Scoped, Singleton, Transient, etc. I was using Mudblazor specifically the Dialog method. Ty
bro your explanation is awesome, i am searching for this kind of videos since week. if you start videos on .net core concepts that would be great.
Thank you so much! 😄 any specific concepts in mind?
@@jfversluis Middlewares, different types of Filters, boxing unboxing, How linq will work, what are singleton, transient and scopes, still there are lot of concepts
Authentication, authorization, JWT Token, how, where and when to create JWT, how jwt is passed in a request, Cookies
The performance hit you speak of, is that at compile time or at runtime?
Runtime. The dependency has to be resolved when requested.
Danke!
Wow, my first super thanks! Thank _you_ !
@@jfversluis you're welcome.
Your videos help me so much. Really enjoy them.
Have a nice weekend
That is great! You enjoy your weekend as well!
Very good video. Maybe you could do a video with Microsoft.Extensions.DependencyInjection
Great suggestion! Will definitely do that!
ty sir
Thank you for the explanation! you got a new (Dutch) sub ;)
Heel graag gedaan! :D
Awesome, thanks!
good need to explain with some simple code
Do you have any specific framework in mind?
@@jfversluis .Net core or .Net MVC
I love this channel , I learn a lot, I think a great topic to discuss will be how to use design patterns with xamarin, I always have struggle with that. Thank you very much.
Great suggestion! Thank you Ed! Any particular patterns you're interested in?
@@jfversluis I 've been working for almost a year now in the states, and I assure that almost any pattern is useful, but by sure factory, decorator , observable, those will be great to know. I think the most used in xamarin will be adapter, cause we use adapter for list in xamarin native, but you know anything is useful, thank you very much for your time I really appreciate it.
Thank you Gerald, great video!
I took a project over recently where not only such commonly used things like logging, but basically everything (e.g. business logic) was implemented as dependencies. It makes code changes a headache because every time I amend business logic, I have to start with modifying the interface first, then do actual implementation. Does it make sense to use interface-based dependency injection for business logic in your opinion?
Hm that sounds a bit like overkill. Do you have the chance to ask the original author(s) to ask what the reason for that was? Everything _can_ make sense. But like you say; if you feel less productive while doing so and you don't really have a compelling reason to keep doing then I would say: no, it doesn't make sense.
Gerald please can you make a video or get me an orentation about how to create a sort by ascending or descending on listview. I am struggling to find something that could function.
You’ll probably want to sort the underlying collection.
@@jfversluis Solved
hi, an dependency inyection with interface = dependency inversion or not? thanks !
Interfaces make dependency injection even more powerful, but it’s not necessary
great video
Thanks!