C# 4 and .NET 4

Displaying output as an HTMl Page ❘ 651
Printing using the Webbrowser Control
Not only can users use the WebBrowser control to view pages and documents, but they can also use the
control to send these pages and documents to the printer for printing. To print the page or document being
viewed in the control, simply use the following construct:
webBrowser1.Print();
As before, you do not need to view the page or document to print it. For instance, you can use the
WebBrowser class to load an HTML document and print it without even displaying the loaded document.
This can be accomplished as shown here:
WebBrowser wb = new WebBrowser();
wb.Navigate("http://www.wrox.com");
wb.Print();
displaying the Code of a requested Page
In the beginning of this chapter, you used the WebRequest and the Stream classes to get at a remote page to
display the code of the requested page. You used this code to accomplish this task:
public Form1()
{
InitializeComponent();
System.Net.WebClient Client = new WebClient();
Stream strm = Client.OpenRead("http://www.reuters.com");
StreamReader sr = new StreamReader(strm);
string line;
}
while ( (line=sr.ReadLine()) != null )
{
listBox1.Items.Add(line);
}
strm.Close();
Now, however, with the introduction of the WebBrowser control, it is quite easy to accomplish the
same results. To accomplish this, change the browser application that you have been working on thus far in
this chapter. To make this change, simply add a single line to the Document_Completed event, as
illustrated here:
private void webBrowser1_DocumentCompleted(object sender,
WebBrowserDocumentCompletedEventArgs e)
{
buttonStop.Enabled = false;
textBox2.Text = webBrowser1.DocumentText;
}
In the application itself, add another TextBox control below the WebBrowser control. The idea is
that when the end user requests a page, you display not only the visual aspect of the page but also
the code for the page, in the TextBox control. The code of the page is displayed simply by using the
DocumentText property of the WebBrowser control, which will give you the entire page’s content as
a String. The other option is to get the contents of the page as a Stream using the DocumentStream
property. The end result of adding the second TextBox to display the contents of the page as a String is
shown in Figure 24-8.
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