rewrite number whatever to .net and blazor.

Pages/Newsletters.cshtml.cs

@@ -0,0 +1,25 @@
+using Microsoft.AspNetCore.Mvc.RazorPages;
+using Microsoft.EntityFrameworkCore;
+using landing.Data;
+using landing.Models;
+
+namespace landing.Pages;
+
+public class NewslettersModel : PageModel
+{
+    private readonly AppDbContext _db;
+
+    public NewslettersModel(AppDbContext db)
+    {
+        _db = db;
+    }
+
+    public List<Newsletter> NewslettersList { get; set; } = new();
+
+    public async Task OnGetAsync()
+    {
+        NewslettersList = await _db.Newsletters
+            .OrderByDescending(n => n.SentAt)
+            .ToListAsync();
+    }
+}