Building Examples That Use a Demo Method and a TextBlock Control

Start Visual Studio 2008.

On the File menu, point to New, and then click Project.

In the Project Types pane of the New Project dialog box, click Visual C# or Visual Basic.

In the Templates list, click Silverlight Application.

Note:
If Silverlight Application does not appear in the Templates list, install Silverlight Tools for Visual Studio 2010 from the Microsoft Download Center.

Type the application name, enter its location, and then click OK.

In the Add Silverlight Application dialog box, click Dynamically generate an HTML test page to host Silverlight within this project, and then click OK.

Note:
Optionally, you can add a new Web site or link to an existing Web site, but this is not necessary for running these examples. They can be run locally in the browser.

Open the default MainPage.xaml file for your Silverlight project.

Change the width of the default UserControl to 1024 or larger, and change its height to 768 or larger, to accommodate the output from the typical example.

Insert the following TextBlock control into the default Grid control.

<TextBlock x:Name = "outputBlock" FontSize="12" 
    TextWrapping="Wrap" /> 

The following code shows the modified MainPage.xaml file.

<UserControl x:Class="Project1.MainPage"
        xmlns="https://schemas.microsoft.com/winfx/2006/xaml/presentation" 
        xmlns:x="https://schemas.microsoft.com/winfx/2006/xaml" 
        xmlns:d=https://schemas.microsoft.com/expression/blend/2008
        xmlns:mc="https://schemas.openxmlformats.org/markup-compatibility/2006" 
        mc:Ignorable="d" d:DesignWidth="640" d:DesignHeight="480">
    <Grid x:Name="LayoutRoot" Background="White">
          <TextBlock x:Name="outputBlock" FontSize="12" 
              TextWrapping="Wrap" />
    </Grid>
</UserControl>

Open the MainPage.xaml.cs or MainPage.xaml.vb file for your application.

After the InitializeComponent statement in the MainPage() constructor, add a call to the static (Shared in Visual Basic) Example.Demo method. Pass the TextBlock control to the method.

The following code shows the modified MainPage.xaml.cs file:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;

namespace SilverlightApplication
{
    public partial class MainPage : UserControl
    {
        public MainPage()
        {
            InitializeComponent();
            Example.Demo(outputBlock);
        }
    }
}

The following code shows the modified MainPage.xaml.vb file:

Partial Public Class MainPage
   Inherits UserControl

   Public Sub New()
      InitializeComponent()
      Example.Demo(outputBlock)
   End Sub

End Class

Copy the example code from a Silverlight topic.

In Solution Explorer, right-click on the project's name, point to Add, and then click New Item to add a new file to the project.

In the Add New Item dialog box, click Code File from the Templates list, name the file Example.cs or Example.vb, and then click the Add button.

Open the Example.cs or Example.vb file.

Paste the example code into the new code file.

The following code demonstrates Example.cs:

class Example
{
    public static void Demo(System.Windows.Controls.TextBlock outputBlock)
    {
    outputBlock.Text += "This message is never seen by users.\n";
    }
}

The following code demonstrates Example.vb:

Class Example

    Public Shared Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
    outputBlock.Text &= "This message is never seen by users." & vbCrLf
    End Sub

End Class

You are now ready to build and run the example.