SpisokList.xaml.cs

using System.Collections.Generic;
using System.Linq;
using Xamarin.Forms;

namespace Spisok.Views
{
    public class ItSect
    {
        public string Name { get; set; }
        public string Number { get; set; }
        public int Timeslot { get; set; }
        public string Time { get; set; }
        public string Day { get; set; }
        public int Aud { get; set; }
        public ItSect(string name, int timeslot, int aud)
        {
            Name = name;
            Timeslot = timeslot;
            Aud = aud;
        }
    }

    public partial class SpisokList
    {
        protected override void OnAppearing()
        {
            base.OnAppearing();
            calledSelect = false;
        }

        public static List<ItSect> listSt;
        private bool calledSelect = false;
        private ItSect selectedItem;
        static SpisokList()
        {
            listSt = Parsing.SectionSet.Select(variable => new ItSect(variable.Name, variable.Timeslot, variable.Aud)).ToList();
        }
       
        public SpisokList()
        {
            if (!Parsing.favLoaded)
                Parsing.loadFav();
            Title = "Секции";
            int number = 1;
            foreach (var VARIABLE in listSt)
            {
                VARIABLE.Name = VARIABLE.Name.ToUpper();
                switch (VARIABLE.Timeslot)
                {
                    case 1:
                        VARIABLE.Time = " 14:\r\n\r\n 00\r\n\r\n -\r\n\r\n 17:\r\n\r\n 00";
                        VARIABLE.Day = " 26.\n\n";
                        VARIABLE.Day += " 04/ \n\n вт";
                        break;
                    case 3:
                        VARIABLE.Time = " 10:\r\n\r\n 00\r\n\r\n -\r\n\r\n 13:\r\n\r\n 00";
                        VARIABLE.Day = " 27.\n\n 04/ \n\n ср";
                        break;
                    case 4:
                        VARIABLE.Time = " 14:\r\n\r\n 00\r\n\r\n -\r\n\r\n 17:\r\n\r\n 00";
                        VARIABLE.Day = " 27.\n\n 04/ \n\n ср";
                        break;
                    case 6:
                        VARIABLE.Time = " 10:\r\n\r\n 00\r\n\r\n -\r\n\r\n 13:\r\n\r\n 00";
                        VARIABLE.Day = " 28.\n\n 04/ \n\n чт";
                        break;
                    case 7:
                        VARIABLE.Time = " 14:\r\n\r\n 00\r\n\r\n -\r\n\r\n 17:\r\n\r\n 00";
                        VARIABLE.Day = " 28.\n\n 04/ \n\n чт";
                        break;
                    case 8:
                        VARIABLE.Time = " 18:\r\n\r\n 00\r\n\r\n -\r\n\r\n 21:\r\n\r\n 00";
                        VARIABLE.Day = " 28.\n\n 04/ \n\n чт";
                        break;
                    case 9:
                        VARIABLE.Time = " 10:\r\n\r\n 00\r\n\r\n -\r\n\r\n 13:\r\n\r\n 00";
                        VARIABLE.Day = " 29.\n\n 04/ \n\n пт";
                        break;
                }
                if (number < 10)
                    VARIABLE.Number = "0" + number++ + ".";
                else
                {
                    VARIABLE.Number = number++ + ".";
                }
            }
            InitializeComponent();
            //SpisokLst.ItemSelected += (sender, e) =>
            //{
            //  ((ListView)sender).SelectedItem = null;
            //};

            SpisokLst.ItemsSource = listSt;
        }

        private void SpisokLst_OnItemTapped(object sender, ItemTappedEventArgs e)
        {
            var dataitem = (ItSect)(e.Item);
            if (SpisokLst.SelectedItem == dataitem && !calledSelect)
            {
                //SpisokLst.SelectedItem = null;
                selectedItem = dataitem;
                SpisokLst_OnItemSelected(sender, null);
            }
        }

        private void SpisokLst_OnItemSelected(object sender, SelectedItemChangedEventArgs e)
        {
            calledSelect = true;
            ItSect dataItem;
            if (e != null)
            {
                if (e.SelectedItem == null)
                {
                    return; //ItemSelected is called on deselection, which results in SelectedItem being set to null
                }
                dataItem = (ItSect)(e.SelectedItem);
            }
            else
            {
                dataItem = selectedItem;
            }
            
            foreach (var section in Parsing.SectionSet)
            {

                if (section.Name.ToUpper() == dataItem.Name)
                {
                    App.MasterDetailPage.Detail.Navigation.PushAsync(new SectionPage(section));
                    break;
                }
            }
        }

       
    }
}