ContrastAdjustEffect Class

public class ContrastAdjustEffect : System.Windows.Media.Effects.ShaderEffect, System.Windows.Media.Animation.IAnimatable  

class ContrastAdjustEffectExampleWindow : Window
   {
      public ContrastAdjustEffectExampleWindow()
      {
         StackPanel sp = new StackPanel();
         Content = sp;
         ImageViewer theViewer = new ImageViewer();

         theViewer.HorizontalAlignment = HorizontalAlignment.Center;
         theViewer.VerticalAlignment = VerticalAlignment.Top;
         theViewer.ImageHorizontalAlignment = HorizontalAlignment.Left;
         theViewer.ImageVerticalAlignment = VerticalAlignment.Top;

         sp.Children.Add(theViewer);

         // Create the sliders
         TextBlock tb = new TextBlock();
         tb.HorizontalAlignment = HorizontalAlignment.Center;
         tb.Text = "Brightness:";
         sp.Children.Add(tb);

         Slider brightnessSlider = new Slider();
         brightnessSlider.Minimum = 0.0;
         brightnessSlider.Maximum = 2.0;
         brightnessSlider.Width = 400;
         brightnessSlider.Orientation = Orientation.Horizontal;
         brightnessSlider.IsSnapToTickEnabled = true;
         brightnessSlider.TickPlacement = System.Windows.Controls.Primitives.TickPlacement.BottomRight;
         brightnessSlider.TickFrequency = 0.1;
         brightnessSlider.AutoToolTipPrecision = 2;
         brightnessSlider.AutoToolTipPlacement = System.Windows.Controls.Primitives.AutoToolTipPlacement.BottomRight;

         sp.Children.Add(brightnessSlider);

         tb = new TextBlock();
         tb.HorizontalAlignment = HorizontalAlignment.Center;
         tb.Text = "Contrast:";
         sp.Children.Add(tb);

         Slider contrastSlider = new Slider();
         contrastSlider.Minimum = 0.0;
         contrastSlider.Maximum = 2.0;
         contrastSlider.Width = 400;
         contrastSlider.Orientation = Orientation.Horizontal;
         contrastSlider.IsSnapToTickEnabled = true;
         contrastSlider.TickPlacement = System.Windows.Controls.Primitives.TickPlacement.BottomRight;
         contrastSlider.TickFrequency = 0.1;
         contrastSlider.AutoToolTipPrecision = 2;
         contrastSlider.AutoToolTipPlacement = System.Windows.Controls.Primitives.AutoToolTipPlacement.BottomRight;

         sp.Children.Add(contrastSlider);

         // Load an image into the viewer
         theViewer.Source = new BitmapImage(new Uri(System.IO.Path.Combine(LEAD_VARS.ImagesDir, "Cannon.jpg")));

         // Create the effect
         ContrastAdjustEffect effect = new ContrastAdjustEffect();
         effect.Brightness = 0.0;
         effect.Contrast = 1.2;
         theViewer.ImageEffect = effect;

         // Bind the properties
         Binding bind = new Binding();
         bind.Source = effect;
         bind.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged;
         bind.Path = new PropertyPath("Brightness");
         brightnessSlider.SetBinding(Slider.ValueProperty, bind);

         bind = new Binding();
         bind.Source = effect;
         bind.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged;
         bind.Path = new PropertyPath("Contrast");
         contrastSlider.SetBinding(Slider.ValueProperty, bind);

         Title = "Using ContrastAdjustEffect";
      }
   }

static class LEAD_VARS
{
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}