Delete cookies in webBrowser without restart

Question

Can you say how I can delete all cookies in private System.Windows.Forms.WebBrowser webBrowser1. I used

[DllImport("wininet.dll", SetLastError = true)]
private static extern bool InternetSetOption(IntPtr hInternet, int dwOption, IntPtr lpBuffer, int lpdwBufferLength);

I want do this with button click.

private void button1_Click(object sender, EventArgs e)
{
         InternetSetOption(IntPtr.Zero, INTERNET_OPTION_END_BROWSER_SESSION, IntPtr.Zero, 0);
} 

But it doesn't work. And I know about webBrowser1.Navigate("javascript:void((function(){var a,b,c,e,f;f=0;a=document.cookie.split('; ');for(e=0;e<a.length&&a[e];e++){f++;for(b='.'+location.host;b;b=b.replace(/^(?:%5C.|[^%5C.]+)/,'')){for(c=location.pathname;c;c=c.replace(/.$/,'')){document.cookie=(a[e]+'; domain='+b+'; path='+c+'; expires='+new Date((new Date()).getTime()-1e11).toGMTString());}}}})())"); It isn't suitable for me.

Answer 1

the correct typing is as follows:

dynamic document = webBrowser1.Document;
document.ExecCommand("ClearAuthenticationCache", false, null);

Cheers.