Grid for Blazor - How to bind the component to data with Entity Framework Core

Razor
@page "/"
@using Microsoft.EntityFrameworkCore
@using BindToData.Models
@inject IDbContextFactory<NorthwindContext> NorthwindContextFactory
@implements IDisposable

<DxGrid Data="Data"
        CustomizeEditModel="OnCustomizeEditModel"
        EditModelSaving="OnEditModelSaving"
        DataItemDeleting="OnDataItemDeleting"
        KeyFieldName="EmployeeId">
    <Columns>
        <DxGridCommandColumn />
        <DxGridDataColumn FieldName="FirstName" />
        <DxGridDataColumn FieldName="LastName" />
        <DxGridDataColumn FieldName="Title" />
        <DxGridDataColumn FieldName="HireDate" />
    </Columns>
    <EditFormTemplate Context="editFormContext">
        <DxFormLayout>
            <DxFormLayoutItem Caption="First Name:">
                @editFormContext.GetEditor("FirstName")
            </DxFormLayoutItem>
            <DxFormLayoutItem Caption="Last Name:">
                @editFormContext.GetEditor("LastName")
            </DxFormLayoutItem>
            <DxFormLayoutItem Caption="Title:">
                @editFormContext.GetEditor("Title")
            </DxFormLayoutItem>
            <DxFormLayoutItem Caption="Hire Date:">
                @editFormContext.GetEditor("HireDate")
            </DxFormLayoutItem>
        </DxFormLayout>
    </EditFormTemplate>
</DxGrid>

@code {
    IEnumerable<object> Data { get; set; }
    NorthwindContext Northwind { get; set; }

    protected override async Task OnInitializedAsync() {
        Northwind = NorthwindContextFactory.CreateDbContext();
        Data = await Northwind.Employees.ToListAsync();
    }

    void OnCustomizeEditModel(GridCustomizeEditModelEventArgs e) {
        if(e.IsNew) {
            var editModel = (Employee)e.EditModel;
            editModel.EmployeeId = Data.Count() + 1;
        }
    }

    async Task OnEditModelSaving(GridEditModelSavingEventArgs e) {
        var editModel = (Employee)e.EditModel;
        // Re-query a data item from the database.
        var dataItem = e.IsNew ? editModel : Northwind.Employees.Find(editModel.EmployeeId);
        // Assign changes from the edit model to the data item.
        if (dataItem != null) {
            dataItem.FirstName = editModel.FirstName;
            dataItem.LastName = editModel.LastName;
            dataItem.Title = editModel.Title;
            dataItem.HireDate = editModel.HireDate;
            dataItem.EmployeeId = editModel.EmployeeId;
            // Post changes to the database.
            if (e.IsNew)
                await Northwind.AddAsync(dataItem);
            await Northwind.SaveChangesAsync();
            // Reload the entire Grid.
            Data = await Northwind.Employees.ToListAsync();
        }
    }

    async Task OnDataItemDeleting(GridDataItemDeletingEventArgs e) {
        // Re-query a data item from the database.
        var dataItem = Northwind.Employees.Find((e.DataItem as Employee).EmployeeId);
        if (dataItem != null) {
            // Remove the data item from the database.
            Northwind.Remove(dataItem);
            await Northwind.SaveChangesAsync();
            // Reload the entire Grid.
            Data = await Northwind.Employees.ToListAsync();
        }
    }

    public void Dispose() {
        Northwind?.Dispose();
    }
}

C#
using BindToData.Models;
using Microsoft.AspNetCore.Components;
using Microsoft.AspNetCore.Components.Web;
using Microsoft.EntityFrameworkCore;


var builder = WebApplication.CreateBuilder(args);

// Add services to the container.
builder.Services.AddRazorPages();
builder.Services.AddServerSideBlazor();
builder.Services.AddDevExpressBlazor(options => {
    options.BootstrapVersion = DevExpress.Blazor.BootstrapVersion.v5;
    options.SizeMode = DevExpress.Blazor.SizeMode.Medium;
});
builder.Services.AddDbContextFactory<NorthwindContext>((sp, options) => {
    var env = sp.GetRequiredService<IWebHostEnvironment>();
    var dbPath = Path.Combine(env.ContentRootPath, "Northwind.db");
    options.UseSqlite("DataSource=" + dbPath);
});
builder.WebHost.UseWebRoot("wwwroot");
builder.WebHost.UseStaticWebAssets();

var app = builder.Build();

// Configure the HTTP request pipeline.
if (!app.Environment.IsDevelopment())
{
    app.UseExceptionHandler("/Error");
    // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
    app.UseHsts();
}
app.UseHttpsRedirection();

app.UseStaticFiles();

app.UseRouting();


app.MapBlazorHub();
app.MapFallbackToPage("/_Host");

app.Run();