protected override void OnInitialized()
        {
            base.OnInitialized();

            Master           = new Master();
            Master.Customers = new List <KeyValuePair <string, int> >
            {
                new KeyValuePair <string, int>("Customer1", 1),
                new KeyValuePair <string, int>("Customer2", 2),
                new KeyValuePair <string, int>("Customer3", 3)
            };
            Master.Products = BlazorApp1.Data.Product.GetAllProducts().Select(e => new KeyValuePair <string, int>(e.Name, e.Id)).ToList();
            Master.AddNewDetailRow();
            Master.DetailPropertyChanged += Master_DetailPropertyChanged;
        }
 void AddNewRow()
 {
     Master.AddNewDetailRow();
 }