Question

I have a simple webpage with only 3 links displayed in my webbrowser component:

<a href="/newpage1.html" id="el-1">Go to new page 1</a>
<a href="/newpage2.html" id="el-2">Go to new page 2</a>
<a href="/file.zip" id="el-1">Download file</a>

I register an event handler for the click event on a list of elements

foreach (HtmlElement e in this.webBrowserMain.Document.GetElementsByTagName("a")){
    e.Click += this.SingleElementClickHandler;
}

Let’s assume that server side the following headers are sent for the file /file.zip

header('Content-type: application/zip');
header('Content-Disposition: attachment; filename="file.zip"');

How can I write the SingleElementClickHandler to pop up a message box with the text “Hello” when a file is downloaded and not when another web page is opened?

I can’t use any third party component.

Answer 1

Simply

this.webBrowserMain.FileDownload += 
    new EventHandler((x, y) => MessageBox.Show("Hello"));

Found this after a bit more of search here and in this SO question (even if it is wpf component and not winforms component).