C#•2w ago

Dependency Injection + MVVM?

I followed a Tim Corey tutorial on Dependency Injection in WPF but he did not use MVVM just raw code behind. How hard would be to switch over to MVVM? I just want an app where I have a MainView, SettingsView, and a few other Views. He uses Interfaces, etc and I'm lost. :< What should I do?

247 Replies

Core Dream Studios•2w ago

I hate confusion, bad enough MVVM can be confusing sometimes for me lol

lycian•2w ago

IMO switching to MVVM just for the sake of it on a small app would only be useful to learn. That said, if you already have DI, it shouldn't be that hard to do

Core Dream Studios•2w ago

i know mvvm but i dunno how to impliment tim corey's di as it's bad practice what he did apparently :/ maybe i will just do the MVVM part and post my code later if someone wants to help me with the DI part XD i cant fiddle with unknowns when i need to make something fast its why i keep going to winforms, it just works :x

Core Dream Studios•2w ago

https://www.youtube.com/watch?v=dLR_D2IJE1M

IAmTimCorey

YouTube

Dependency Injection in WPF in .NET 6 Including the Factory Pattern

.NET Core has a built-in dependency injection that we use in every web project type we create. However, did you know that you can also use that same dependency injection in the .NET Core version of WPF? In this video, we are going to enable dependency injection in WPF and then use it for some common scenarios, including creating multiple forms. ...

Core Dream Studios•2w ago

i used his DI setup but its for non-mvvm i know some mvvm but iam not good at combining ideas into 1, autism sucks 😦 so i always get stuck with concepts

Core Dream Studios•2w ago

Core Dream Studios•2w ago

I added the common Models, ViewModels, Views folder added CommunityToolkit.MVVM as well etc so i got that far 😄

leowest•2w ago

push to github and post link 😉

Core Dream Studios•2w ago

wheee i gotta make a new ssh, sec pushing https://github.com/coredreamstudios/TitanSTUDIO yay 😄 ignore the MainView.xaml window, i renamed the original to MainViewDI.xaml so i can work on my UI while i wait

leowest•2w ago

u forgot to set it pub

Core Dream Studios•2w ago

i cant keep it private? sec

leowest•2w ago

if u keep it private then u have to invite people in order for them to see it

Core Dream Studios•2w ago

done

leowest•2w ago

leowest77

Core Dream Studios•2w ago

its now public

lycian•2w ago

In the toolkit MVVM samples they have basically what you're looking for https://github.com/CommunityToolkit/MVVM-Samples/blob/master/samples/MvvmSampleUwp/App.xaml.cs#L56

GitHub

MVVM-Samples/samples/MvvmSampleUwp/App.xaml.cs at master · Communit...

Sample repo for MVVM package. Contribute to CommunityToolkit/MVVM-Samples development by creating an account on GitHub.

lycian•2w ago

They add the viewmodels as transient in the container, the views can then either: be added to the container, or get the view model from the container it uses UWP but the same applies for WPF

leowest•2w ago

@Core Dream Studios a lot of the things u have in your viewdi, will go in the viewmodel or are the 2 different windows?

Core Dream Studios•2w ago

minus the _click's of course as we will use ICommand's right?

leowest•2w ago

some of the ui events would become commands yes

Core Dream Studios•2w ago

not sure why tim made child forms like that

leowest•2w ago

but imagine for example if u wanted to load something when the window loads

Core Dream Studios•2w ago

you cant customize em as they're all the same XD

leowest•2w ago

then what we often do is we wire it from the view to the vm

Core Dream Studios•2w ago

yep, that i understand do i even need factories? i dont even know wth those even are XD i only did what he did

leowest•2w ago

u may use factories in some scenarios but for a simple app at the level u are right now u shouldn't have to worry about it all u have are either singleton or scoped stuff

Core Dream Studios•2w ago

my app is very simple, all it will do is write/read files, and ram addresses, nothing special no web, etc

leowest•2w ago

its worth learning about the lifecycle of things so u understand which one u should use

Core Dream Studios•2w ago

singleton i know means a window/form which you use once, aka the main one that i get the transient means more than 1 use according to what tim said

leowest•2w ago

singleton will live trhu the entire duration of the app

Core Dream Studios•2w ago

im gonna try to update my code to reflect the DI with MVVM then push changes to github yes, aka main window 🙂

leowest•2w ago

also u added CTK but you're not using it u still have INPC stuff

Core Dream Studios•2w ago

CTK?

leowest•2w ago

CommunityToolkit abbrev

Core Dream Studios•2w ago

yeah i didnt switch over yet was doing some raw basic stuff for now but gonna switch in a minute i will update my github in 20min

leowest•2w ago

its ok im just going thru what is in there for now and seeing what changes are required to plug mvvm with di

Core Dream Studios•2w ago

that code behind Tim did with the Main .xaml, thats bad practice for mvvm for sure

leowest•2w ago

yes because it mix view with things that aren't view

Core Dream Studios•2w ago

i think datacontext would be best here

leowest•2w ago

DataContext would still live in the view althou u can also set it via di initialization

leowest•2w ago

the concept of DI is

leowest•2w ago

you have an object with a dependency when that object is initialize DI will query its setvices and see if it have an instance it can fullfil that dependency so it looks up oh I have a singleton MainViewModel, let me pass it via that constructor

Core Dream Studios•2w ago

i will see how far i can get now, will update github when done 🙂

using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using System.Windows;
using TitanSTUDIO.Views;
using SampleWpfLibrary;
using TitanSTUDIO.StartupHelpers;

namespace TitanSTUDIO;

public partial class App : Application
{
    public static IHost? AppHost { get; private set; }

    public App()
    {
        AppHost = Host.CreateDefaultBuilder()
            .ConfigureServices((hostContext, services) => 
            {
                services.AddSingleton<MainViewDI>();
                services.AddViewFactory<ChildView>();
                services.AddTransient<IDataAccess, DataAccess>();
            })
            .Build();
    }

    protected override async void OnStartup(StartupEventArgs e)
    {
        await AppHost!.StartAsync();

        var startupForm = AppHost.Services.GetRequiredService<MainViewDI>();
        startupForm.Show();

        base.OnStartup(e);
    }

    protected override async void OnExit(ExitEventArgs e)
    {
        await AppHost!.StopAsync();

        base.OnExit(e);
    }
}

using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using System.Windows;
using TitanSTUDIO.Views;
using SampleWpfLibrary;
using TitanSTUDIO.StartupHelpers;

namespace TitanSTUDIO;

public partial class App : Application
{
    public static IHost? AppHost { get; private set; }

    public App()
    {
        AppHost = Host.CreateDefaultBuilder()
            .ConfigureServices((hostContext, services) => 
            {
                services.AddSingleton<MainViewDI>();
                services.AddViewFactory<ChildView>();
                services.AddTransient<IDataAccess, DataAccess>();
            })
            .Build();
    }

    protected override async void OnStartup(StartupEventArgs e)
    {
        await AppHost!.StartAsync();

        var startupForm = AppHost.Services.GetRequiredService<MainViewDI>();
        startupForm.Show();

        base.OnStartup(e);
    }

    protected override async void OnExit(ExitEventArgs e)
    {
        await AppHost!.StopAsync();

        base.OnExit(e);
    }
}

i guess i iwll delete this as its not mvvm

leowest•2w ago

that is

Core Dream Studios•2w ago

leowest•2w ago

part of it at least I will update u in a bit

Core Dream Studios•2w ago

leowest•2w ago

Core Dream Studios•2w ago

i dont understand why he did child view/forms like he did since you cant modify them individually XD like ui etc

leowest•2w ago

well I did not watch his video he must have a reason but it all depends how the childs will be used

Core Dream Studios•2w ago

but i dont want a cookie cutter child form each window will have its own look tbh for me aka SettingsView

leowest•2w ago

also u realize button have a control called Content where u can write Button 2 instead of wrapping a textblock right?

Core Dream Studios•2w ago

oh, yeah , i know, im doing it in a rush so i can focus on the mvvm/di first

leowest•2w ago

well normally wpf is not designed to have multiple windows like winforms u can

Core Dream Studios•2w ago

i also need to do templating which is not needed right now

leowest•2w ago

but usually you have a navigation using usercontrols that swap to different locations

Core Dream Studios•2w ago

so wouldnt i use pages then?

leowest•2w ago

with that one window u have

Core Dream Studios•2w ago

err user controls

leowest•2w ago

UserControls is fine I dont ever recall ever using Pages with WPF maybe once to explain it to some one about the navigation system they have in the docs but that was it

Core Dream Studios•2w ago

pages is more of a ASP.NET / Blazor thing im sure but yes i can do Main and UC and use the child style he did welp i got a lot to work on before i can upload a updated code base so probably wont be for a hour or more XD now with user controls those also will need viewmodels right? based on what they will do each SettingsUserControlViewModel etc?

leowest•2w ago

some will yes u dont need to append UserControl to the name

Core Dream Studios•2w ago

leowest•2w ago

just SettingView/ViewModel

Core Dream Studios•2w ago

ty I will update here when i got something useful to show thank you @leowest 🙂

leowest•2w ago

np another thing is that ur not using binding at all

Core Dream Studios•2w ago

yeah i know

leowest•2w ago

I assume because u were copying Tim's stuff

Core Dream Studios•2w ago

i was doing raw im switchingt to mvvm now yes 🙂 MVVM = ❤️

leowest•2w ago

so ChildView becomes UserControl from Window via xaml I added a 3rd grid where I have a ControlControl to show the childview inside

        <ContentControl Grid.Row="1" Content="{Binding Child}">
            <ContentControl.Resources>
                <DataTemplate DataType="{x:Type vm:ChildViewModel}">
                    <local:ChildView />
                </DataTemplate>
            </ContentControl.Resources>
        </ContentControl>

        <ContentControl Grid.Row="1" Content="{Binding Child}">
            <ContentControl.Resources>
                <DataTemplate DataType="{x:Type vm:ChildViewModel}">
                    <local:ChildView />
                </DataTemplate>
            </ContentControl.Resources>
        </ContentControl>

Core Dream Studios•2w ago

ControlControl? oh

leowest•2w ago

the datatemplate defines the vm for the childview do I dont need to wire anything on the View of Child DI will do it all by it self

Core Dream Studios•2w ago

the buttons werent meant to be on top tbh i was gonna do something gamified

leowest•2w ago

it doesn't matter its just to show how it all wires nad works its fine

Core Dream Studios•2w ago

oh ok

using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using SampleWpfLibrary;
using System.Windows;
using TitanSTUDIO.ViewModels;
using TitanSTUDIO.Views;

namespace TitanSTUDIO;

public partial class App : Application
{
    public static IHost? AppHost { get; private set; }

    public App()
    {
        AppHost = Host.CreateDefaultBuilder()
            .ConfigureServices((hostContext, services) => 
            {
                services.AddTransient<IDataAccess, DataAccess>();
               // services.AddScoped<ChildViewModel>();
               // services.AddScoped<ChildView>();
                services.AddSingleton<MainViewModel>();
                services.AddSingleton<MainView>();
            }).Build();
    }
}

using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using SampleWpfLibrary;
using System.Windows;
using TitanSTUDIO.ViewModels;
using TitanSTUDIO.Views;

namespace TitanSTUDIO;

public partial class App : Application
{
    public static IHost? AppHost { get; private set; }

    public App()
    {
        AppHost = Host.CreateDefaultBuilder()
            .ConfigureServices((hostContext, services) => 
            {
                services.AddTransient<IDataAccess, DataAccess>();
               // services.AddScoped<ChildViewModel>();
               // services.AddScoped<ChildView>();
                services.AddSingleton<MainViewModel>();
                services.AddSingleton<MainView>();
            }).Build();
    }
}

i should of kept the overrides? i removed them (not focused on child atm its why I commented it out)

leowest•2w ago

its ok u do u im just showing what u have wired what it would could look like

Core Dream Studios•2w ago

well now my window wont even load

leowest•2w ago

so that contentcontrol I showed u above I can easily add more templates to it of different childs

Core Dream Studios•2w ago

so i probably will need the overrides on OnStartup etcc

leowest•2w ago

and swap it via the vm

Core Dream Studios•2w ago

thats fair

leowest•2w ago

Core Dream Studios•2w ago

<Application x:Class="TitanSTUDIO.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:local="clr-namespace:TitanSTUDIO">
    <Application.Resources>
         
    </Application.Resources>
</Application>

<Application x:Class="TitanSTUDIO.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:local="clr-namespace:TitanSTUDIO">
    <Application.Resources>
         
    </Application.Resources>
</Application>

leowest•2w ago

Child is what is bound to the contentcontrol

Core Dream Studios•2w ago

i removed the startupwindow as tim said to do

leowest•2w ago

yes u have to since u wire it from the app.xaml.cs

Core Dream Studios•2w ago

ok but how to i load it now? i removed the OnStartup/OnExit oh ok, so same way got it so many variables 😂

leowest•2w ago

yeah what is in the app.xaml.cs is basic setup for the di it doesnt really change much

Core Dream Studios•2w ago

im gonna make a base template out of this project im sure i can save it as a Project Template yay

Core Dream Studios•2w ago

<StatusBar Grid.Row="1" Background="#222" Foreground="WhiteSmoke"> <StatusBarItem Margin="20 5" Content="{Binding Version}"/> <StatusBarItem Margin="20 5" Content="Item 2"/> <StatusBarItem Margin="20 5" Content="Item 3"/> </StatusBar> and bind works 🙂 I think I'm getting somewhere ( I didn't do templating, its why you see margin repeating 😄 ) So... Interfaces, is basically like how C++ has header files? you have the main class then a interface which refers to the methods? I will just read the msdn docs on those

leowest•2w ago

no interfaces are like contracts c++ often split the signature in a header file and the method in the cpp file i.e.: signature

private void GetData();

private void GetData();

leowest•2w ago

to illustrate what I was saying earlier

leowest•2w ago

        <ContentControl Grid.Row="1" Content="{Binding Child}">
            <ContentControl.Resources>
                <DataTemplate DataType="{x:Type vm:ChildViewModel}">
                    <local:ChildView />
                </DataTemplate>
                <DataTemplate DataType="{x:Type vm:Child2ViewModel}">
                    <local:ChildView2 />
                </DataTemplate>
            </ContentControl.Resources>
        </ContentControl>

        <ContentControl Grid.Row="1" Content="{Binding Child}">
            <ContentControl.Resources>
                <DataTemplate DataType="{x:Type vm:ChildViewModel}">
                    <local:ChildView />
                </DataTemplate>
                <DataTemplate DataType="{x:Type vm:Child2ViewModel}">
                    <local:ChildView2 />
                </DataTemplate>
            </ContentControl.Resources>
        </ContentControl>

I can easily swap between child a and b where button 1 is accessing your data

Core Dream Studios•2w ago

as long as each child, has its own uI since im gonna many, one for settings with comboboxes, buttons, textboxes etc. and others with similar but for other roles

leowest•2w ago

if you have a UserControl you could just add it to your xaml using say

<local:SomeUserControl />

<local:SomeUserControl />

this would make so it inherits the datacontext from the parent, so if the parent was MainViewModel, it inherits it. however if u define a DataTemplate with a specific ViewModel it will be given that

Core Dream Studios•2w ago

leowest•2w ago

the datatemplate is also what allows u to use the BaseViewModel as a type to render the View instead of having to use the View and wire everything

Core Dream Studios•2w ago

Getting overwhelmed but trying

leowest•2w ago

well I will just leave u to it once u finish doing your thing and update let me know and I will take a look again

Core Dream Studios•2w ago

thank you, def getting somewhere 🙂 almost got it going XD i can't get this to work with UserControls so far

leowest•2w ago

its ok do the rest first get the rest working and then u can go into that

Core Dream Studios•2w ago

oh, was trying to load up the usercontrol i made XD hrm

Core Dream Studios•2w ago

my code didn't update on the github XD im getting sloppy 😦

leowest•2w ago

did u forget to set the upstream or something check what origin/master are set to

Core Dream Studios•2w ago

its not letting me push i think even though i told it too if i switch to origin/master on remote and try i get this

Core Dream Studios•2w ago

leowest•2w ago

did u commit and then push also that is not what I meant by check master/origin check what its set to sometimes its set to local so it may not be pushing to github

Core Dream Studios•2w ago

leowest•2w ago

that doesnt tell u what master is set to

Core Dream Studios•2w ago

where am i not looking?

leowest•2w ago

git remote show origin for example

Core Dream Studios•2w ago

ok F:\Backups\Backup-DevDrive\source\csharp\wpf\TitanSTUDIO>git remote show origin 'git' is not recognized as an internal or external command, operable program or batch file. ugh im getting stupid, timeout for tonight i guess

leowest•2w ago

:catlaugh:

Core Dream Studios•2w ago

i will install git

leowest•2w ago

looks like u dont have git installed outside the dev env or something

Core Dream Studios•2w ago

yeah, i hardly used it til now, i will install

leowest•2w ago

sometimes its easier to get the info via cli

Core Dream Studios•2w ago

leowest•2w ago

u have a typo ah nvm u fixed after git push origin master:master

Core Dream Studios•2w ago

https://github.com/coredreamstudios/TitanSTUDIO/blob/master/TitanSTUDIO/App.xaml.cs

GitHub

TitanSTUDIO/TitanSTUDIO/App.xaml.cs at master · coredreamstudios/Ti...

Contribute to coredreamstudios/TitanSTUDIO development by creating an account on GitHub.

Core Dream Studios•2w ago

no change

leowest•2w ago

yeah I dunno it looks fine visually maybe zip it to save the changes and try to git push origin I assume those changes u showed in the window were commited right git commit -m "Additional changes" if they were this could should say there is no changes or w/e

Core Dream Studios•2w ago

let me do this, brb

leowest•2w ago

ah u didnt set that up on visual studio

Core Dream Studios•2w ago

not surprised 😂 we good now

Core Dream Studios•2w ago

https://github.com/coredreamstudios/TitanSTUDIO/blob/master/TitanSTUDIO

GitHub

TitanSTUDIO/TitanSTUDIO at master · coredreamstudios/TitanSTUDIO

Contribute to coredreamstudios/TitanSTUDIO development by creating an account on GitHub.

leowest•2w ago

u dont need to do

        private string _version = "1.00";
        public string Version
        {
            get => _version;
            set => SetProperty(ref _version, value);
        }

        private string _version = "1.00";
        public string Version
        {
            get => _version;
            set => SetProperty(ref _version, value);
        }

Core Dream Studios•2w ago

that was just for testing

leowest•2w ago

u can just do

[ObservableProperty]
private string _version = "1.00";

[ObservableProperty]
private string _version = "1.00";

less boilerplate

Core Dream Studios•2w ago

leowest•2w ago

it generates all the rest for u

Core Dream Studios•2w ago

i got the old fashioned way stuck in my head XD isnt human memory fun? 😊

leowest•2w ago

this is a view

Core Dream Studios•2w ago

but its a UC? confusing

leowest•2w ago

yes it is confusing but you're using that one as a view

Core Dream Studios•2w ago

i want it to be a uc so its in the mainview window

leowest•2w ago

when you're create a UserControl for the purpose of it being just a control that is a different thing

sibber•2w ago

user controls are views

leowest•2w ago

it will be a child in the mainwindow for settings where u want its own vm

sibber•2w ago

uis are called views

Core Dream Studios•2w ago

see, i hate layout 😦

leowest•2w ago

just think of it as Features

Core Dream Studios•2w ago

i dunno if i want settings as a self contained uc or a window

leowest•2w ago

forget View and ViewModel imagine this

Core Dream Studios•2w ago

maybe im using UserControls for the wrong reasons as UC is to make CUSTOM control i get it now

leowest•2w ago

root
 - Features
   • Settings
   • Home
   • Login
     - LoginView
     - LoginViewModel
     - LoginModel
 - Services
app.xaml
app.xaml.cs

root
 - Features
   • Settings
   • Home
   • Login
     - LoginView
     - LoginViewModel
     - LoginModel
 - Services
app.xaml
app.xaml.cs

Core Dream Studios•2w ago

so i must use a window as a view 🙂

leowest•2w ago

Core Dream Studios•2w ago

nice tree

leowest•2w ago

window is always the shell

Core Dream Studios•2w ago

leowest•2w ago

its the top level where u can house views

Core Dream Studios•2w ago

ok so MainView.xaml is fine

leowest•2w ago

I usually name it Shell to make it less complciated but sure u can name it MainWindowView MainView it all makes sense

Core Dream Studios•2w ago

some people make different ways of doing things

Core Dream Studios•2w ago

example, this app, also WPF using popup windows so its confusing 😦

leowest•2w ago

u can have Dialog Popup as a window that is no problem

Core Dream Studios•2w ago

what would this be called

leowest•2w ago

you would have a dialogservice that would summon that window etc

Core Dream Studios•2w ago

i am horrible with design, its not something im good at

leowest•2w ago

honestly that would be similar a toolwindow

Core Dream Studios•2w ago

i can ironically make logos, illustrations etc but not ui

leowest•2w ago

these are just window/view concepts but have u stopped to think u may not new a separted window? maybe your window is alredy big enough that simple having a navigation with in it is enough to house the settings page Honestly I think of the whole layout like this Shell/Window/Main as the casket all other UserControls are Views that are housed by it or summoned by it in some fashion

Core Dream Studios•2w ago

ok so i got rid of the UserControls folder and made a Settings Window named SettingsView if i was rich id just hire someone to do the ui but im on ssi trying to make a life for myself and failing (perm physical disability) im very close too :X

leowest•2w ago

so you're set that ur settingsview must be a window on its own then u will need to write a service that u will inject to your vm that needs to call it that will open/close/manage it

Core Dream Studios•2w ago

well it dont need to be its own window it could be embedded

leowest•2w ago

well u create it as Window

Core Dream Studios•2w ago

hell, do it as a tab

leowest•2w ago

so it can only be a window

Core Dream Studios•2w ago

so what do I use? back to usercontrols?

leowest•2w ago

if u want it to be housed inside a window it needs to be a UserControl

Core Dream Studios•2w ago

ok got it

Core Dream Studios•2w ago

ok there makes sense since embedded wont have its own modal buttons and title

leowest•2w ago

yep now u make a vm for it and wire it all in the di and datatemplate and that's it

Core Dream Studios•2w ago

all set

leowest•2w ago

u dont need that u just need the datatemplate

MODiX•2w ago

leowest

        <ContentControl Grid.Row="1" Content="{Binding Child}">
            <ContentControl.Resources>
                <DataTemplate DataType="{x:Type vm:ChildViewModel}">
                    <local:ChildView />
                </DataTemplate>
                <DataTemplate DataType="{x:Type vm:Child2ViewModel}">
                    <local:ChildView2 />
                </DataTemplate>
            </ContentControl.Resources>
        </ContentControl>

        <ContentControl Grid.Row="1" Content="{Binding Child}">
            <ContentControl.Resources>
                <DataTemplate DataType="{x:Type vm:ChildViewModel}">
                    <local:ChildView />
                </DataTemplate>
                <DataTemplate DataType="{x:Type vm:Child2ViewModel}">
                    <local:ChildView2 />
                </DataTemplate>
            </ContentControl.Resources>
        </ContentControl>

Quoted by

<@626236623104770049> from #Dependency Injection + MVVM? (click here)

React with ❌ to remove this embed.

Core Dream Studios•2w ago

this?

leowest•2w ago

yes

Core Dream Studios•2w ago

ok, sorry

leowest•2w ago

and each view/vm would be 1 separate datatemplate of the views u want to be able to be swapped in there u can also connect the selection there to what was selected in a listbox if u want to make the menu react when u select something

Core Dream Studios•2w ago

im close

leowest•2w ago

well your settingsview is not called childview

Core Dream Studios•2w ago

yep fixed

leowest•2w ago

did u do the binding on the vm for Child

Core Dream Studios•2w ago

i dont even have nothing to bind yet, settingsview is emoty

leowest•2w ago

u do

leowest•2w ago

u need to setup that if u want it to actually display

Core Dream Studios•2w ago

so do i make dummy data pretty much in the vm?

leowest•2w ago

mmm no

Core Dream Studios•2w ago

using CommunityToolkit.Mvvm.ComponentModel; namespace TitanSTUDIO.ViewModels; public partial class SettingsViewModel : ObservableObject { [ObservableProperty] private string _dummy = "Dummy Data"; } oh 😐

leowest•2w ago

👆 child sample there

Core Dream Studios•2w ago

ok so what is this BaseViewModel i dont even see code for it im getting too tired and making dumbass mistakes tbh

leowest•2w ago

ah its just the ObservableObject but instead I made a class that inherits from it as I tend to have things like Name and other properties that are common between

Core Dream Studios•2w ago

ok changed it back to ObservableObject

leowest•2w ago

public partial class BaseViewModel : ObservableObject
{
    [ObservableProperty]
    private string _name;
}

public partial class BaseViewModel : ObservableObject
{
    [ObservableProperty]
    private string _name;
}

Core Dream Studios•2w ago

what is this going to be used for?

leowest•2w ago

public partial class MainViewModel : BaseViewModel
{
    public MainViewModel()
    {
        Name = "MainView";
    }
}

public partial class MainViewModel : BaseViewModel
{
    public MainViewModel()
    {
        Name = "MainView";
    }
}

just an example its also a common class to be used if u need to have a List of VM or something

Core Dream Studios•2w ago

but this is getting too confusing now

leowest•2w ago

or an object that can be different vms

Core Dream Studios•2w ago

so many addons :/

leowest•2w ago

imagine this how would u be able to have SettingsViewModel, HomeViewModel, LoginViewModel inside Child is they have nothing in common

Core Dream Studios•2w ago

leowest•2w ago

BaseViewModel acts as the interpreter for that

Core Dream Studios•2w ago

thats true

leowest•2w ago

https://learn.microsoft.com/en-us/dotnet/csharp/fundamentals/object-oriented/inheritance https://learn.microsoft.com/en-us/dotnet/csharp/fundamentals/object-oriented/polymorphism worth checking to deepen the concept

Core Dream Studios•2w ago

so its like the glue between them all

leowest•2w ago

I will be back in 30 minutes or so food

Core Dream Studios•2w ago

i need to sleep tbh, its past my bed time XD its why im messing up i cant focus

Core Dream Studios•2w ago

but there, a basemodel

Core Dream Studios•2w ago

and some error i guess but no problem, have a good one 🙂

leowest•2w ago

now u need SettingsViewModel to inherit from it every vm would inherit from BaseViewModel

Core Dream Studios•2w ago

that does make more sense

Core Dream Studios•2w ago

😛

leowest•2w ago

it should build/run now

Core Dream Studios•2w ago

now it can access both baseviewmodel and the data in there ok sec

leowest•2w ago

I dont see the last error

Core Dream Studios•2w ago

getting somewhere what time is it by you?

leowest•2w ago

u have not made the Child property to set it to the settings so its just inheriting CHild from the MainViewModel and printing it 11

Core Dream Studios•2w ago

yeah ill fix it in a bit its 10pm for me sadly 11am?

leowest•2w ago

Core Dream Studios•2w ago

ah you on tomorrow night at all? i cant function when my head is burnt out tbh never code when tired 🙂

leowest•2w ago

¯\_(ツ)_/¯ im usually around

Core Dream Studios•2w ago

<ContentControl Grid.Row="0" Content="{Binding }"> <ContentControl.Resources> <DataTemplate DataType="{x:Type vm:SettingsViewModel}"> <local:SettingsView /> </DataTemplate> </ContentControl.Resources> </ContentControl> i just need to figurew out what to bind to ok np i will def get back to this tomorrow, it's useless to do this if i can't focus done that so many times too, doesn't help XD I appreciate your help though @leowest , learning alot tbh.

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