Вытащил солюшен на уровень выше, чтобы прощё было дотнетить

BlazorWebAssemblyVisaApiClient/Constants.cs

@@ -0,0 +1,19 @@
+using System.Text.RegularExpressions;
+using Microsoft.AspNetCore.Components;
+
+namespace BlazorWebAssemblyVisaApiClient;
+
+public static class Constants
+{
+    public readonly static Regex EnglishWordRegex = new("^[a-zA-Z]*$");
+
+    public readonly static Regex EnglishPhraseRegex = new(@"^[a-z A-Z№0-9?><;,{}[\]\-_+=!@#$%\^&*|']*$");
+
+    public readonly static Regex PhoneNumRegex = new(@"^[\+]?[(]?[0-9]{3}[)]?[-\s\.]?[0-9]{3}[-\s\.]?[0-9]{4,6}$");
+
+    public readonly static MarkupString RequiredFieldMarkup = (MarkupString)"<span style=\"color: red;\">*</span>";
+
+    public const string ApplicantRole = "Applicant";
+    public const string ApprovingAuthorityRole = "ApprovingAuthority";
+    public const string AdminRole = "Admin";
+}