connect_base/AvaloniaApplication5/Models/Teache.cs

using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml.Linq;
using Microsoft.EntityFrameworkCore.Storage.ValueConversion.Internal;
namespace AvaloniaApplication5.Models
{
    public partial class Teacher
    {
        public string summa 
        {
            get
            {
              
                int summ = 0;
                foreach(var item in TeacherCourses)
                {
                    if (item.TeacherId == Id)
                    {
                        int a = Convert.ToInt32(item.Course.Time);
                        summ += a;
                    }
                }
                if (summ > 0)
                {
                    return "Курсы в общем объеме "+ summ +" часов:";
                }
                else
                {
                    return "Курсы не пройдены";
                }
            }


        }
        public string FIO
        {
            get
            {
                return LastName + " " + FirstName + " " + PatronymicName;
            }
        }

    }
}