c# specified cast is not valid while assigning mshtml.HTMLDocument.frames

Question

I'm developing an IE BHO, While accessing frames in a html document i'm getting this error

Here is the code.

foreach (SHDocVw.InternetExplorer objExplorer in objShellWins)
{
   if (objExplorer.Document is HTMLDocument)
   {
      objDocument = (mshtml.HTMLDocument)objExplorer.Document;
      mshtml.HTMLDocument doc = (mshtml.HTMLDocument)objExplorer.Document;
      mshtml.FramesCollection frames = (mshtml.FramesCollection)doc.frames;  //Exception at this line
   }
}

what is the issue here ?

What is the error message from the exception?

noseratio
– noseratio

2013-10-09 09:18:47 +00:00
Commented Oct 9, 2013 at 9:18 — noseratio
– noseratio, Commented Oct 9, 2013 at 9:18

Narayan · Accepted Answer · 2013-10-09 14:43:33Z

3

OK people i got it solved by setting [STAThread] at function calling

answered Oct 9, 2013 at 14:43

Narayan

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2 Comments

Narayan Over a year ago

May be it conflicts with Windows.forms webbrowser control and mshtml webbrowser, also check the access permission for frames. What exception you get ?

Mr.X Over a year ago

The same which you are getting - specified cast is not valid exception. How to check access permission for frames?

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