C#

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Media;
using System.Windows.Shapes;
//
namespace WpfApplication1 {
   //
   class Program {
      //
      [STAThread]
      static void Main( string[] args ) {
         Window window = new Window() {
            WindowStartupLocation = WindowStartupLocation.CenterScreen,
            SizeToContent = SizeToContent.WidthAndHeight
         };
         //
         Canvas canvas = new Canvas() { Width = 400, Height = 400 };
         Rectangle rect = new Rectangle() {
            Width = 20,
            Height = 20,
            Fill = Brushes.MediumBlue
         };
         canvas.Children.Add( rect );
         //
         Slider sliderY = new Slider() {
            Orientation = Orientation.Vertical,
            Maximum = 300,
            Minimum = 100,
            Value = 200
         };
         Slider sliderX = new Slider() {
            Orientation = Orientation.Horizontal,
            Maximum = 300,
            Minimum = 100,
            Value = 200
         };
         //
         StackPanel sp1 = new StackPanel() { Orientation = Orientation.Horizontal };
         StackPanel sp2 = new StackPanel() { Orientation = Orientation.Vertical };
         sp1.Children.Add( canvas );
         sp1.Children.Add( sliderY );
         sp2.Children.Add( sp1 );
         sp2.Children.Add( sliderX );
         window.Content = sp2;
         //
         Binding bindingX = new Binding();
         bindingX.Source = sliderX;
         bindingX.Path = new PropertyPath( Slider.ValueProperty );
         rect.SetBinding( Canvas.LeftProperty, bindingX );
         //
         Binding bindingY = new Binding();
         bindingY.Source = sliderY;
         bindingY.Path = new PropertyPath( Slider.ValueProperty );
         rect.SetBinding( Canvas.TopProperty, bindingY );
         //
         Application app = new Application();
         app.Run( window );
      }
   }  // end class.
}

mibetty wrote:

I need to use polimorphysm,abstract class,overriding, POO concepts.

public class CanvasManager
{
  private List<Shape> shapes = new List<Shape>();

  public void AddShape(Shape shape)
  {
    shapes.Add(shape);
  }

  public void Paint()
  {
    foreach (Shape shape in shapes)
    {
      shape.Draw();
    }
  }
}

public abstract class Shape
{
  public Shape(int x, int y, int width, int height)
  {
    Bounds = new Rectangle(x, y, width, height);
  }
  public Rectangle Bounds { get; set; }

  public abstract Draw();
}