Silverlight Canvas Control in VB.NET

In this article we will learn how to use canvas control in Silverlight 4.
  • 1914

In this article we will learn how to use canvas control in Silverlight 4.

Canvas Control

Canvas control is a simplest layout control. canvas control are used to defines a area within which you can place other controls by specifying the x and y coordinate position. When controls are placed within a Canvas, the x and y coordinates must be specified for each control using the attributes Canvas.Left and Canvas.Top.

Properties - These are the following properties of the canvas control.

can.gif
 

Figure 1.

Height - Gets the rendered height of this element.  

Width - Gets the rendered width of this element.

Background - Gets or sets a Brush that is used to fill the area between the borders of a Panel.

VerticalAlignment - Gets or sets the vertical alignment characteristics applied to this element when it is composed within a parent element such as a panel or items control.

Fill - fill property are used to fill the color.

For example

Drag a canvas and four Rectangle control on the form. The form looks like this.

can1.gif
 

Figure 2.

Now select the Rectangle controls and set the properties of every Rectangle.

Canvas.Left=25

Canvas.Top=40

Fill=green

Width=100

Height=100

The form looks like this after set the property of each Rectangle control.

can2.gif
 

Figure 3.

XAML Code:

<UserControl x:Class="SilverlightApplication18.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:DesignHeight="300" d:DesignWidth="400">

 

    <Grid x:Name="LayoutRoot" Background="White" HorizontalAlignment="Stretch"VerticalAlignment="Top">

        <Canvas Width="500" Background="#FF22CB76" Margin="0,0,-100,-349">

            <Rectangle Canvas.Left="25" Canvas.Top="40" Fill="green" Width="100" Height="100" />

            <Rectangle Canvas.Left="50" Canvas.Top="65" Fill="yellow" Width="100" Height="100" />

            <Rectangle Canvas.Left="75" Canvas.Top="90" Fill="red" Width="100" Height="100" />

            <Rectangle Canvas.Left="100" Canvas.Top="105" Fill="Purple" Width="100" Height="100" />

        </Canvas>

    </Grid>

</UserControl>

Now Save and run the application.

can3.gif
 

Figure 4.

Categories

More Articles

© 2019 DotNetHeaven. All rights reserved.