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[CarlosEX]

Good evening, guys, I need your help. I'm trying to do something trivial and I'm not getting it. I've researched and only found content in WPF that I could not replicate in avalonia. I'm currently in this state here. What am I doing wrong to fill out this ListBox? Could someone provide me with an example of how I can do this padding and what good practices would be for this type of linking. If you have any repository for study, it will also be of great help. Thank you very much.

[jp2masa]

ListBox.Items is an enumerable. So for example you could do this.DataContext = new Person[] { new Person() { ... } } and then <ListBox Items="{Binding}" (this would bind the items to the DataContext value itself, which is the array).

[CarlosEX]

True, I opened here and it worked for me too. You know what it was, is that in the model I spent earlier I used the templante avalonia.mvvm and I believe you are talking something to make it work. But if it's with the avalonia.app, it works. Well, now I know where to focus my strength. And veryoooooo thanks for the help!

[CarlosEX]

Just could not make it work in the mvvm standard. I'm going to study it this week to understand the architecture and where I'm supposed to move. If you or someone already know and can replicate this example, it will be great to give a clear in mind.

[CarlosEX]

Please help me with this simple question?
Based on the same example you sent me, I used this fill structure here.

----------//

With literal values

<ListBox VirtualizationMode="None">
            <ListBoxItem >
                <StackPanel>
                    <TextBlock Text="Title"/>
                    <TextBlock Text="SubTitle" />
                </StackPanel>
            </ListBoxItem>
        </ListBox>

---

Error!

When I link, it gives me an exception

Exception

Unhandled exception. System.NullReferenceException: Object reference not set to an instance of an object.

  <ListBox Items="{Binding}" VirtualizationMode="None">
            <ListBoxItem >
                <StackPanel>
                    <TextBlock Text="{Binding FirstName}"/>
                    <TextBlock Text="{Binding LastName}" />
                </StackPanel>
            </ListBoxItem>
        </ListBox>

[jp2masa]

The problem with the MVVM template is probably that the main window DataContext gets overwritten on App.axaml.cs:

                desktop.MainWindow = new MainWindow
                {
                    DataContext = new MainWindowViewModel(),
                };

So if you want to set the DataContext in the MainWindow constructor, you have to remove that line.

[CarlosEX]

Thank you so much for your help and attention. I am studying the wpf documentation part to understand these elementary issues and not skate again.