Wiform combined with WebBrowser controls

Find controls in the WebBrowser control page
HtmlElement btnelement = this.webBrw.Document.GetElementById ("Txtnum");
if (btnelement! = null)
{
string a = Btnelement.innertext;
string B = Btnelement.outertext;

}
Invoke the JS in the WebBrowser control page

You need to reference. Net
Using Mshtml;

IHTMLDocument2 doc = (IHTMLDocument2) webBrw.Document.DomDocument;
IHTMLWindow2 win = (IHTMLWindow2) Doc.parentwindow;
Win.execscript ("Ifdy ()", "JavaScript");

Reassign an event to a button click event in a WebBrowser control page
HtmlElement btnelement = this.webBrowser1.Document.GetElementById ("btn180");
if (btnelement! = null)
{
Btnelement.click + = new Htmlelementeventhandler (button2_click);

}

Wiform combined with WebBrowser controls