Creating controls

I am designing a silverlight application in which i have a image control in the left top corner and when i click the button and drag it to the form i should get duplicate of that control and dragged into my form.

Please help me with the code

I am trying to create the control dynamically in mouseleftbuttondown event but the controls are not being created.

Xaml

<UserControl xmlns:navigation="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Navigation"  xmlns:controls="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls"  x:Class="Workflow.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
    mc:Ignorable="d" d:DesignWidth="640" d:DesignHeight="480">
    <Canvas x:Name="layout" Width="800" Height="600" Background="AliceBlue">
        <Image x:Name="MyImage" Source="21.jpg" Canvas.Left="10" Canvas.Top="10" Stretch="Uniform" 
             MouseLeftButtonDown="MyImage_MouseLeftButtonDown" ></Image>
    </Canvas>

</UserControl>

Code

private void MyImage_MouseLeftButtonDown(object sender, MouseButton开发者_StackOverflow社区EventArgs e)
        {
            b = cs.LoadControl();
            layout.Children.Add(b);
        }

List<Ellipse> block = new List<Ellipse>();
        public Ellipse LoadControl()
        {
            Ellipse btn = new Ellipse();
            block.Add(btn);
            btn.Height = 50; btn.Width = 100;
            SolidColorBrush mySolidColorBrush = new SolidColorBrush();
            mySolidColorBrush.Color = Color.FromArgb(0, 255, 255, 0);
            btn.Fill = mySolidColorBrush;
            Canvas.SetTop(btn, 50);
            Canvas.SetLeft(btn, 50);
            return btn;
        }

You are using Color.FromArgb(0, 255, 255, 0) which has 0 for alpha, which makes your control transparent. What if you try Color.FromArgb(255, 255, 255, 0)?