Webbrowser navigation canceled even if the file exists

Question

I already browse this question but it was not very useful: WebBrowser control page load error (or maybe I didn't catch the thing)

I use a WebBrowser to display the content of a PDF in my application (C# .NET 4.5). I try to navigate into the local URL of the file (which I can open with the explorer) with this code:

m_path = pdfDoc.CreateReportFile();
try
{
   webBrowser1.Navigate(new Uri(m_path));
}
catch (Exception e)
{
    Console.WriteLine("{0} Exception caught.", e);
}

But the navigation is always canceled, even if I try to reload the page. No exception is thrown.

What can I do?

Here's the URL: C:\\Users\\me\\AppData\\Local\\Temp\\LY20_2014-11-25_06#22M1[1].pdf

If I paste it in IE, remove the escaping \, the file does open.

Update:

The webbrowser works fine when entering the string @"http://www.google.fr"
When using the PDF file address it opens it in Acrobat Reader after the Navigation Canceled message

You do know that catching and rethrowing like that is of no use, don't you? Can you post the complete url? — Andrew, Dec 01 '14 at 15:50
no. Test your code without calling pdfDoc.CreateReportFile() and assign to *m_path* a valid PDF file path. — Martin Delille, Dec 01 '14 at 19:16
Beware of double backslashes. Those should NOT be part of the string. Double backslashes are ONLY needed when you are typing a literal string in your code in order to escape the backslash and you are not using `@` before the quotes. Make sure your string is actually `C:\Users\me\AppData\Local\Temp\LY20_2014-11-25_06#22M1[1].pdf`. — Andrew, Dec 01 '14 at 20:09
@Andrew the path is provided using `Path.GetTempPath()` so I assume the double backslashes are not an issue, furthermore when I right-click => Address the webbrowser, the right address is displayed — Thomas Ayoub, Dec 02 '14 at 08:05
When you create the pdfDoc is it in read only mode or are freeing it to be use by any application ? — Maxime Mangel, Dec 02 '14 at 08:25
@MaximeMangel I'm pretty sure it's not read only but I'll check again. I just updated the post — Thomas Ayoub, Dec 02 '14 at 08:30
@Thomas Then I'll suggest you to remove the line concerning pdfDoc if you think it is not related to your problem. — Martin Delille, Dec 02 '14 at 12:26

score 0 · Accepted Answer · answered Dec 02 '14 at 15:43

0

Thanks to dear Adobe and Microsoft, we can't display a 32bits ActiveX in a 64bits WebBrowser at least, they are honest :

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

answered Dec 02 '14 at 15:43

Thomas Ayoub

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Webbrowser navigation canceled even if the file exists

Update:

1 Answers1