Вот код, который должен делать именно то, что вы хотите с комментариями, чтобы объяснить, что происходит:
public partial class MainWindow : Window
{
/// <summary>
/// This is a helper class. It appears that we can't mark the Window as ComVisible
/// so instead, we'll use this seperate class to be the C# code that gets called.
/// </summary>
[ComVisible(true)]
public class ComVisibleObjectForScripting
{
public void ButtonClicked()
{
//Do whatever you need to do. For now, we'll just show a message box
MessageBox.Show("Button was clicked in web page");
}
}
public MainWindow()
{
InitializeComponent();
//Pass an instance of our helper class as the target object for scripting
webBrowser1.ObjectForScripting = new ComVisibleObjectForScripting();
}
private void Window_Loaded(object sender, RoutedEventArgs e)
{
//Navigate to your page somehow
webBrowser1.Navigate("http://www.somewhere.com/");
}
private void webBrowser1_LoadCompleted(object sender, NavigationEventArgs e)
{
//Once the document is loaded, we need to inject some custom JavaScript.
//Here is the JavaScript
var javascript = @"
//This is the JavaScript method that will forward the click to the WPF app
function htmlButtonClicked()
{
//Do any other procession...here we just always call to the WPF app
window.external.ButtonClicked();
}
//Find the button that you want to watch for clicks
var searchButton = document.getElementById('theButton');
//Attach an onclick handler that executes our function
searchButton.attachEvent('onclick',htmlButtonClicked);
";
//Grab the current document and cast it to a type we can use
//NOTE: This interface is defined in the MSHTML COM Component
// You need to add a Reference to it in the Add References window
var doc = (IHTMLDocument2)webBrowser1.Document;
//Once we have the document, execute our JavaScript in it
doc.parentWindow.execScript(javascript);
}
}
Часть этого была взята из http://beensoft.blogspot.com/2010/03/two-way-interaction-with-javascript-in.html