Question

How can I get the element value from the web page in C#, with the WPF WebBrowser component?

For example I want to get this value 1.7655 from this page http://www.forexpros.com/currencies/usd-gel.

Thanks

Answer 1

After you call the Navigate method of the WebBrowser component of WPF to open a webpage, the DocumentCompleted event arrives, and you can safely browse the content of the page (note that sometimes this event occurs multiple times). The Document property of WebBrowser contains the HTML in an already processed format, called the DOM tree. Unfortunately, you cannot use this property easily, since it is only an object. This feature has not been completed in WPF (December 2011).

I would use the Winforms version of WebBrowser instead. You can use it in a WPF application if you embed it into a WindowsFormsHost. This class is complete: its Document property is an HtmlDocument object, with a Body property, which is an HtmlElement, which contains the content of the page. You can walk the DOM tree recursively to find the element you want (and read its InnerText), or simply process the text of the whole page using Regex or an HTML parser library.