How to perform different actions with a time interval?

Question

WPF

How to make the actions performed in turn and with a time interval of four seconds?
That is, I clicked on the button:

//через 4-е секунды выполнилось это действие
                image2.Source = target;

               //еще четыре секунды следующее 
                image3.Source = target;

               //еще четыре секунды
                image4.Source = target;

               //еще четыре секунды
                image5.Source = target;

All code is like this

Answer 1

If Sumor 's answer doesn't work for you, try using a timer for WPF . It works in the same thread as the interface, so there will be less problems with it.
XAML code:

<Window x:Class="Animator.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition />
            <RowDefinition />
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition />
            <ColumnDefinition />
        </Grid.ColumnDefinitions>
        <Image Grid.Row="0" Grid.Column="0" Name="image1" />
        <Image Grid.Row="0" Grid.Column="1" Name="image2" />
        <Image Grid.Row="1" Grid.Column="0" Name="image3" />
        <Image Grid.Row="1" Grid.Column="1" Name="image4" />
    </Grid>
</Window>

Pair code on sharpe:

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media.Imaging;
using System.Windows.Threading;

namespace Animator
{
  /// <summary>
  /// Interaction logic for MainWindow.xaml
  /// </summary>
  public partial class MainWindow : Window
  {
    public MainWindow()
    {
      InitializeComponent();

      images = new Image[] { image1, image2, image3, image4 };

      bitmap1 = new BitmapImage(new Uri(@"http://урл_на_первую_картинку"));
      bitmap2 = new BitmapImage(new Uri(@"http://урл_на_вторую"));
      bitmap3 = new BitmapImage(new Uri(@"http://на_третью"));
      bitmap4 = new BitmapImage(new Uri(@"http://и_на_четвертую"));

      bitmapSources = new BitmapSource[] { bitmap1, bitmap2, bitmap3, bitmap4 };

      timer = new DispatcherTimer(DispatcherPriority.Normal);
      timer.Interval = new TimeSpan(0, 0, 4);
      timer.Tick += Timer_Tick;
      timer.Start();
    }

    int number = 0;

    private void Timer_Tick(object sender, EventArgs e)
    {
      images[number].Source = bitmapSources[number];
      number++;
      if (number >= 4)
      {
        timer.Stop();
      }
    }

    private BitmapSource bitmap1 = null;
    private BitmapSource bitmap2 = null;
    private BitmapSource bitmap3 = null;
    private BitmapSource bitmap4 = null;

    private BitmapSource[] bitmapSources = null;

    private Image[] images = null;

    private DispatcherTimer timer = null;
  }
}

Answer 2

If you work in Wpf, then look towards the standard animation: General information about animation effects
There are objects of the StoryBoard type in which you can describe the sequence of actions for any element of the window.