OOOWriteAndClear/OOO_WriteAndClear/DBModels/UserPartialClass.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace OOO_WriteAndClear.DBModels
{
    public partial class User
    {
        public override string ToString()
        {
            return UserSurname 
                + " " 
                + 
                UserName 
                + " " 
                + UserPatronymic;
        }
    }
}