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Hushian.Application/Services/UserService.cs

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+using Hushian.Application.Contracts.Persistence;
+using Hushian.Domain.Entites;
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Hushian.Application.Services
+{
+    public class UserService
+    {
+        private readonly IGenericRepository<User> _UserRepository;
+        public async Task<bool> AnyUser(int UserID) =>await _UserRepository.Get().AnyAsync(a=>a.ID==UserID);
+
+    }
+}