WPF Contact Book - Part 5 [Data Service]

In this video we setup our BookView and view model. All code and references can be found in the links below.
BookView - pastebin.com/d...
BookViewModel - pastebin.com/4...
IContactDataService - pastebin.com/8...
MockDataService - pastebin.com/4...
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[@BoyOfTheFuture4987]

Can you explain why u used Ienumerable rather than using normal list or observable collections

[@VinuP2023]

Thanks much. :) :)

[@ToskersCorner]

Hope you enjoyed. Series will continue being uploaded Monday!

[@VinuP2023]

yes i did enjoy. You are very underrated youtuber!. I try to spread good words about your channel with my friends.

[@BoyOfTheFuture4987]

please change the music that you use when your speeding your video....suddenly out of nowhere when that music kicks I get a mini heart attack. if possible don't put any music....it feels more natural that way

[@Tydides64]

There's no way. Too much typing in advance without any results. It looks like you're reading this from the 2nd monitor and retyping it all. As the video is going on my brain is getting clogged with the information I don't understand and never receiving explanation or working example. Maybe to you this is boring and you're looking to type it out fast and hope we'll understand, but try to look at this video from a perspective of a beginner. This is 4th video in row with connected typing and code preparing for a debug without actually running it, who codes like that? Please break these videos down and do a proper explanation and result at the end.
I'm telling this because you're good at making videos but not that good at teaching beginners.
Anyways, thank you for your effort, keep making em. I'd support if I could!

[@ToskersCorner]

Yes, I make the program beforehand and use the second monitor to keep me on track. You also need to understand my videos are generally ordered in a certain way. Anything that I do, that I do not explain, I usually have already covered in a past video (Instead of repeating it in every single video). This is why I normally try to be vigilant in linking videos that have pre-requisite information. There are plenty of videos that take you through a more time-consuming process that will cover all the little small details you want. I chose not to do some of my videos like that because there are already many channels that do this, and not enough that quickly lay things out in a modular fashion.
This isn't to disregard your advice and I will certainly take it in to more consideration. However, the main point I intend to cross is that this video specifically is not intended for absolute beginners. You should follow the series I have in order, where I slowly build up from a "pseudo-mvvm" to this. Also my playlists are a better starting point for beginners. These series are intended to combine things we already learned in other videos.
Edit: Perhaps I will make a series for the end of each playlist (Or link existing ones) so it is easier to know which series you are ready for and which you are not.

[@Tydides64]

@@ToskersCorner Thanks, I guess I'll check previous projects first