Empty property in Binding the GridViewColumn to List<EntityFrameworkCore's Entity>-CodePudding

There is no initial data in my WPF (netcore3.1-windows) EFCore 5 application when I bind AnotherEntity's Name.
The data does initially load in the same app but with WPF (net40) EFCore 6 Application from the Page's load:

    public partial class Entity
    {
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors")]
            
        public virtual AnotherEntity AnotherEntity { get; set; }
        ...
    }
    ...
    WPFPage()
    {
        _entities = DBContext.Entities.ToList();
    }

<ListView ItemsSource="{Binding _entities}" ...> ...
    <GridView>                    
        <!--with FECore5 no data here. But in EF6 there is.-->
        <GridViewColumn DisplayMemberBinding="{Binding Entity.AnotherEntityName}" 
        Header="Entity"
        Width="100"></GridViewColumn>
    </GridView>
...

Unless I access and load Another database Entities from AnotherEntities property in the Application code:

    public AnotherWPFPage() { _anotherEntities = DBContext.AnotherEntities.ToList(); }

Or if I explicitly set the binding as

    <GridViewColumn DisplayMemberBinding="{Binding Entity.AnotherEntity.AnotherEntityName}"

Is this due to the DataBase's scaffolding error by Fluent Api, xaml bindings feature or the EntityFrameworkCore's feature?.

CodePudding user response：

I don't have an access your full code base, but I presume it's due to EF Core lazy loading feature and its dynamic proxies might not work with WPF binding. In your code change this

_entities = DBContext.Entities.ToList();

To this

_entities = DBContext.Entities
    .Include(x => x.AnotherEntity)
    .ToList();