When you start creating Silverlight based applications, one of first things you will need to choose how your Silverlight application layout. Silverlight provides five layout panels. The default panel is Grid panel.

Canvas Panel

Canvas is one of the Silverlight panel, that enables layout of your Silverlight applications. Control positing inside Canvas in controlled by specifying the X and Y coordinates of  controls. These coordinates are in pixel. Canvas.Left and Canvas.Top properties can also be use for specifying X and Y coordinates. Canvas objects can also be nested. Each child element must be UIElementChildren property is used for accessing Canvas child elements in code. Sometimes Canvas is used as a container for other objects in that Canvas does not have any visible property. A Canvas is not visible if any of the following conditions are true:

  • The Height property is equal to 0.
  • The Width property is equal to 0.
  • The Background property is equal to nullNothingnullptrunita null reference (Nothing in Visual Basic).
  • The Opacity property is equal to 0.
  • The Visibility property is equal to Visibility..::..Collapsed.
  • One of the ancestor objects of the Canvas is not visible.

Canvas Example

<Canvas Width="640" Height="480" Background="White">
    <Rectangle Canvas.Left="30" Canvas.Top="30" 
           Fill="blue" Width="250" Height="150" />
    <Rectangle x:Name ="CanvasRect" Canvas.Left="60" Canvas.Top="60"  Height="50" Width="100" Fill="Red" ></Rectangle>
</Canvas>

Canvas Example

In Next we will discuss about Silverlight  Dock Panel Container