Understanding Xamarin's iOS Timer Monitoring Image Display

using System.Timers;
using Xamarin.Forms;

namespaceAssd1Tab.Views
{
    public partial class ReceiveDataPageiOS:ContentPage
    {
        /// <summary>Control for Timer</summary>
        public Timer Timer 1 { get; set; } = null;
        
        public ReceiveDataPageiOS()
        {
            InitializeComponent();
            Timer1 = new Timer();
            Timer 1.Interval = 1000;
            Timer 1.Start();
            Timer1.Elapped+=newElappedEventHandler (OnTimerEvent);
        }

        /// <summary>
        /// Timer Events
        /// </summary>
        /// <param name="source"></param>
        /// <param name="e"></param>
        private void OnTimerEvent(object source, ElapsedEventArgse)
        {
            Image1.Source="http://192.168.0.10/Pic1/Pic0.Jpeg";
            Image2.Source="http://192.168.0.10/Pic1/Pic1.Jpeg";
            Image3.Source="http://192.168.0.10/Pic1/Pic2.Jpeg";
            Image4.Source="http://192.168.0.10/Pic1/Pic3.Jpeg";
            Image5.Source="http://192.168.0.10/Pic1/Pic4.Jpeg";
            Image6.Source="http://192.168.0.10/Pic1/Pic5.Jpeg";
            Image7.Source="http://192.168.0.10/Pic1/Pic6.Jpeg";
            Image8.Source="http://192.168.0.10/Pic1/Pic7.Jpeg";
            
        }

        /// <summary>
        /// Content Load Event (event on this form call)
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void ContentPage_Appearing (System.Object sender, System.EventArgse)
        {
            Image1.Source="http://192.168.0.10/Pic1/Pic0.Jpeg";
        }

        /// <summary>
        /// Content unload event (event when this form is erased)
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void ContentPage_Desappearing (System.Object sender, System.EventArgse)
        {
        }
        private void ContentPage_LayoutChanged (object sender, System.EventArgse)
        {

        }
    }
}


<?xml version="1.0" encoding="UTF-8"?>
<ContentPage
    xmlns="http://xamarin.com/schemas/2014/forms"
    xmlns: x="http://schemas.microsoft.com/winfx/2009/xaml"
    x: Class="Assd1Tab.Views.ReceiveDataPageiOS"
    Appearing="ContentPage_Appearing"Disappearing="ContentPage_Desappearing" LayoutChanged="ContentPage_LayoutChanged">
    <ContentPage.Content>
        <StackLayout Padding="0,0,0,0" VerticalOptions="Center">
            <Gridx: Name="ReciveGrid" RowSpacing="0" ColumnSpacing="0">
                <Grid.RowDefinitions>
                    <RowDefinition Height="100"/>
                    <RowDefinition Height="100"/>
                </Grid.RowDefinitions>
                <Grid.ColumnDefinitions>
                    <ColumnDefinition/>
                    <ColumnDefinition/>
                    <ColumnDefinition/>
                    <ColumnDefinition/>
                    <ColumnDefinition/>
                    <ColumnDefinition/>
                    <ColumnDefinition/>
                    <ColumnDefinition/>
                </Grid.ColumnDefinitions>
                <Image x: Name="Image 1" Grid.Column="1" Grid.Row="0"/>
                <Image x: Name="Image2" Grid.Column="2" Grid.Row="0"/>
                <Image x: Name="Image 3" Grid.Column="3" Grid.Row="0"/>
                <Image x: Name="Image 4" Grid.Column="4" Grid.Row="0"/>
                <Image x: Name="Image 5" Grid.Column="5" Grid.Row="0"/>
                <Image x: Name="Image 6" Grid.Column="6" Grid.Row="0"/>
                <Image x: Name="Image 7" Grid.Column="7" Grid.Row="0"/>
                <Image x: Name="Image8" Grid.Column="8" Grid.Row="0"/>
            </Grid>
        </StackLayout>
    </ContentPage.Content>
</ContentPage>