<Grid x:Name="ImageSlideShow">
           <Grid.RowDefinitions >
               <RowDefinition Height="410*"/>
               <RowDefinition Height="*"/>
   </Grid.RowDefinitions>
</Grid>


Step 2: Make a Stackpanel in Grid row 0 and place an image in Stackpanel.
<StackPanel Grid.Row="0" >
                <Border BorderBrush="White" Grid.Row="0" BorderThickness="4"Width="700">
                    <Image x:Name="ImageSource" Source="uri"AutomationProperties.Name="ImageSource" VerticalAlignment="Top" Stretch="Fill"Height="380" Width="700">
                    </Image>
                </Border>
            </StackPanel>


Step 3: Make a new Grid in main Grid row 1. Add a stackpanel in new Grid then add 4 buttons in stackpanel.
<Grid x:Name="Input" Margin="456,428,455,0" VerticalAlignment="Top"HorizontalAlignment="Center" Height="198">
                 
                <!--Add stack pannel and set its orientation horizontal-->
                <StackPanel Orientation="Horizontal" Grid.ColumnSpan="2"Margin="0,0,0,-45">
                    <!--Add 4 buttns to stack pannel-->
                    <!--You can use style of app bar buttons or you can also use images-->
                    <!--Generate click events of all these buttons-->
                    <Button x:Name="playSlideshow"  Margin="0,0,10,121"Click="playSlideshow_Click" Style="{StaticResource PlayAppBarButtonStyle}"Width="115"/>
                    <Button x:Name="pauseSlideshow" Grid.Row="1" Margin="0,0,10,0" Click="pauseSlideshow_Click" Style="{StaticResource PauseAppBarButtonStyle}"/>
                    <Button x:Name="previousItem" Grid.Row="1" Margin="0,0,10,0"Click="previousItem_Click" Style="{StaticResource PreviousAppBarButtonStyle}"/>
                    <Button x:Name="nextItem" Grid.Row="1"  Margin="0,0,10,0"Click="nextItem_Click" Style="{StaticResource NextAppBarButtonStyle}"/>
                </StackPanel>
            </Grid>
Step 4: Open the MainPage.Xaml.cs from Solution Explorer.

Step 5: Add a Dispatcher Timer 
public MainPage()
       {
           this.InitializeComponent();
       }
      
       //Add Dispatcher Timer
       DispatcherTimer playlistTimer = null;
       //Rightclick to play to Manager and Resolve
       PlayToManager playToManager = null;
       //Rightclick to Coredispatcher and Resolve
       CoreDispatcher dispatcher = null;
       //Make a list of strings
       List<string> Images = new List<string>();


Step 6: Add a method


protected override void OnNavigatedTo(NavigationEventArgs e)
        {
            //add imags thatyou want to show in your slide show
            Images.Add("a.jpg");
            Images.Add("b.jpg");
            Images.Add("c.jpg");
            Images.Add("d.jpg");
            Images.Add("e.jpg");
            Images.Add("f.jpg");
            Images.Add("g.jpg");
            playlistTimer = new DispatcherTimer();
            //Set the Time span in which the IMAGE is changed, like here i set interval of 3 sec
            playlistTimer.Interval = new TimeSpan(0, 0, 3);
            playlistTimer.Tick += playlistTimer_Tick;
             
            playToManager = PlayToManager.GetForCurrentView();
            playToManager.SourceRequested += playToManager_SourceRequested;
            //right click to bitmapimage and reslove
            ImageSource.Source = new BitmapImage(new Uri("ms-appx:///Assets/" + Images[count]));
  }




Step 7: Set the source and count in which image will rotate


private void playToManager_SourceRequested(PlayToManager sender, PlayToSourceRequestedEventArgs args)
       {
           var deferral = args.SourceRequest.GetDeferral();
           var handler = dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
           {
               args.SourceRequest.SetSource(ImageSource.PlayToSource);
               deferral.Complete();
           });
       }
       int count = 0;
Step 8: Method of timer tick


private void playlistTimer_Tick(object sender, object e)
       {
           if (Images != null)
           {
               if (count == Images.Count - 1)
                   count = 0;
               if (count < Images.Count)
               {
                   count++;
                   ImageRotation();
               }
           }
     

 Step 9: Add a method of image Rotation


private void ImageRotation()
       {
           ImageSource.Source = new BitmapImage(new Uri("ms-appx:///Assets/" + Images[count]));
       }




Step 10: Now add the code to Play, Pause, Previous and Next button's click event.


//Add code for "Play Button" click event
        private void playSlideshow_Click(object sender, RoutedEventArgs e)
        {
            {
                if (Images != null)
                {
                    playlistTimer.Start();
                }
            }
        }
        //Add code for "Pause Button" click event
        private void pauseSlideshow_Click(object sender, RoutedEventArgs e)
        {
            if (Images != null)
            {
                playlistTimer.Stop();
            }
        }
         //Add code for "Previous Button" click event
        private void previousItem_Click(object sender, RoutedEventArgs e)
        {
            if (Images != null)
            {
                count--;
                if (count >= 0)
                {
                    ImageRotation();
                }
                else
                {
                    count = Images.Count - 1;
                    ImageRotation();
                }
            }
        }
        //Add code for "Next Button" click event
        private void nextItem_Click(object sender, RoutedEventArgs e)
        {
            if (Images != null)
            {
                count++;
                if (count < Images.Count)
                {
                    ImageRotation();
                }
                else
                {
                    count = 0;
                    ImageRotation();
                }
            }
        }



Output:





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