Correcting all errors of types, writed, and entities.

PyroFetes/Models/Contract.cs

@@ -0,0 +1,15 @@
+using System.ComponentModel.DataAnnotations;
+using Microsoft.EntityFrameworkCore;
+
+namespace PyroFetes.Models;
+
+[PrimaryKey(nameof(ShowId), nameof(ServiceProviderId))]
+public class Contract
+{
+    [Required] public int ShowId { get; set; }
+    [Required] public int ServiceProviderId { get; set; }
+    [Required] public string? TermsAndConditions { get; set; }
+
+    public Show? Show { get; set; }
+    public ServiceProvider? ServiceProvider { get; set; }
+}