Page load captcha not load in webbrowser

Question

I am using webbrowser into Windows application. When webbrowser navigate first time, there is no problem. But calling second time webbrowser navigate captcha does not change.

private void button1_Click(object sender, EventArgs e)
{
    webBrowser1.Navigate("uyg.sgk.gov.tr/SgkTescil4a");
    webBrowser1.ScriptErrorsSuppressed = true;
    webBrowser1.AllowNavigation = true;
}

Answer 1

To prevent page caching on your client, which may be the reason why you see the Captcha not changing use

webbrowser1.Refresh(WebBrowserRefreshOption.Completely).

to clear the cache. If its not a client side caching issue, then its a problem with the website.