ItemTemplate visual BindingContext getting copied between the Items property of the CarouselView

I use the CarouselView inside a ContentView. This CarouselView has a binding to a list of Weeks (in order to print out the weeks for a certain year). Then, I use the ItemTemplate to print each week as I want to. Each week then has to print its 7 days via a DayCell custom control (another ContentView) to which I assign the BindingContext from the XAML code. Here’s the XAML:

<ContentView xmlns="http://xamarin.com/schemas/2014/forms" 
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="NomadApp.Helpers.Controls.Agenda.Agenda"
             xmlns:Carousel="clr-namespace:PanCardView;assembly=PanCardView"
             xmlns:AgendaHelpers="clr-namespace:NomadApp.Helpers.Controls.Agenda"
             x:Name="this">

    <ContentView.Content>


                <Carousel:CarouselView Grid.Row="1" 
                                       x:Name="carouselView" 
                                       Items="{Binding Source={x:Reference this}, Path=Weeks}"
                                       SwipeThresholdDistance="300" 
                                       VerticalOptions="FillAndExpand" >
                    
                    <Carousel:CarouselView.ItemTemplate>
                        <DataTemplate>

                            <Grid x:Name="daysGrid">

                                <Grid.RowDefinitions>
                                    <RowDefinition Height="*"/>
                                </Grid.RowDefinitions>

                                <Grid.ColumnDefinitions>
                                    <ColumnDefinition/>
                                    <ColumnDefinition/>
                                    <ColumnDefinition/>
                                    <ColumnDefinition/>
                                    <ColumnDefinition/>
                                    <ColumnDefinition/>
                                    <ColumnDefinition/>
                                </Grid.ColumnDefinitions>

                                <AgendaHelpers:DayCell Grid.Column="0" BindingContext="{Binding Days[0]}"/>
                                <AgendaHelpers:DayCell Grid.Column="1" BindingContext="{Binding Days[1]}"/>
                                <AgendaHelpers:DayCell Grid.Column="2" BindingContext="{Binding Days[2]}"/>
                                <AgendaHelpers:DayCell Grid.Column="3" BindingContext="{Binding Days[3]}"/>
                                <AgendaHelpers:DayCell Grid.Column="4" BindingContext="{Binding Days[4]}"/>
                                <AgendaHelpers:DayCell Grid.Column="5" BindingContext="{Binding Days[5]}"/>
                                <AgendaHelpers:DayCell Grid.Column="6" BindingContext="{Binding Days[6]}"/>
                                
                            </Grid>

                        </DataTemplate>

                    </Carousel:CarouselView.ItemTemplate>
                </Carousel:CarouselView>

    </ContentView.Content>
</ContentView>

Each DayCell has a tap gesture recognizer to detect when we tap on the DayCell and when this happens, it draws a circle on this DayCell. Problem is, the drawing is getting made for same DayCell every 4 weeks. So if I select a day, then every 4 weeks, this same day gets selected.

I’m thinking of a problem in the control on how it manages the BindingContext declaration as I do it in the XAML. I know that this is not a problem from my code or the way a manage the ‘selection’ because with this https://github.com/alexrainman/CarouselView Carousel View, I do not have that problem.

Does anyone have a clue on what I can do?

For more context, this is the code for my Weeks collection and object:

Week collection bound to the CarouselView:

        /// <summary>
        /// The weeks that the agenda holds
        /// </summary>
        public ObservableCollection<Week> Weeks { get => _weeks; set { _weeks = value; OnPropertyChanged(nameof(Weeks)); } }

Week object:

    public class Week
    {
        #region Properties

        /// <summary>
        /// This week's number in the year
        /// </summary>
        public int WeekNumber { get; set; }

        /// <summary>
        /// The 7 days a week must have
        /// </summary>
        /// <remarks>
        /// TODO: Don't assign after having done bindings to this week's days, or bindings will be lost! 
        /// </remarks>
        public List<Day> Days { get; set; }

        public DateTime FirstMondayDate
        {
            get => _firstMondayDate;
            set
            {
                FirstMondayNumber = value.Day;
                _firstMondayDate = value;
            }

        }
        /// <summary>
        /// The number  in the month of the first day in this week
        /// </summary>
        /// <remarks>
        /// TODO: Don't assign after having done bindings to this week's days, or bindings will be lost! 
        /// </remarks>
        public int FirstMondayNumber
        {
            get { return _firstMondayNumber; }
            set
            {
                _firstMondayNumber = value;
                UpdateDays();
            }
        }

        /// <summary>
        /// The number in the month of the last day in this week
        /// </summary>
        public int LastSundayNumber
        {
            get { return _lastSundayNumber; }
            set
            {
                _lastSundayNumber = value;
                UpdateDays();
            }
        }


        #endregion
    }

[Juansero29]

I’ll try that and tell you

[AndreiMisiukevich]

ok, i think you can use it as workaround I closed this issue, but if you provide me a sample, i will reopen it)