rewrite number whatever to .net and blazor.

Models/Subscriber.cs

@@ -0,0 +1,16 @@
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace landing.Models;
+
+[Table("subscribers")]
+public class Subscriber
+{
+    [Key]
+    [Column("id")]
+    public int Id { get; set; }
+
+    [Required]
+    [Column("email")]
+    public string Email { get; set; } = string.Empty;
+}