Added code to support password settings. Fixed a bug where the [FromBody] attribute resulted in null object properties, as well as included more null checks.

SecureCore/Services/UserDataService.cs

@@ -1,7 +1,5 @@
 using System;
 using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
 using System.Data;
 using System.Data.SqlClient;
 
@@ -9,12 +7,13 @@ namespace SecureCore.Services
 {
     public static class UserDataService
     {
-        //
         public static int UserNameMaxLength { get; } = 64;
+        public static int UserNameMinLength { get; } = 3;
         public static int EmailMaxLength { get; } = 512;
 
         public static (bool IsValid, string Message) IsUsernameValid(string userName)
         {
+            if (string.IsNullOrEmpty(userName) || userName.Length < UserNameMinLength) return (false, $"Username is too short, the user name must be at least {UserNameMinLength} characters long.");
             if (userName.Length > UserNameMaxLength) return (false, $"Username too long, must not exceed {UserNameMaxLength} characters.");
 
             var invalidChars = new List<char>();
@@ -62,6 +61,7 @@ namespace SecureCore.Services
 
         public static (bool IsValid, string Message) IsEmailValid(string email)
         {
+            if (string.IsNullOrEmpty(email)) return (false, "The provided email is not in the correct format.");
             if (email.Length > EmailMaxLength) return (false, $"Email exceeds the maximum length of {EmailMaxLength} characters.");
 
             //Code taken from user "Cogwheel" on StackOverflow: https://stackoverflow.com/questions/1365407/c-sharp-code-to-validate-email-address