1,引用mshtml.dll
using mshtml;
2,獲取元素屬性值
IHTMLDocument2 doc2=(IHTMLDocument)webbrowser1.Document; IHTMLElement img=(IHTMLElement)doc2.all.item("regimg",0); string imgUrl=(string)img.getAttribute("src");
3,取表單控件
IHTMLElement loginName=(IHTMLElement)doc2.all.item("loginname",0); IHTMLElement loginPW=(IHTMLElement)doc2.all.item("password",0); IHTMLElement loingYZM=(IHTMLElement)doc2.all.item("regcode",0); IHTMLElement loginBT=(IHTMLElement)doc2.all.item("formsubmit",0);
4,填寫表單控件
loginName.setAttribute("value",tbLoginName.Text); loginPW.setAttribute("value",tbLoginPassWord.Password); loginYZM.setAttribute("value",tbYZ.Text);
5,點擊按鈕
loginBT.click();
6,執行js腳本
方法1:
IHTMLwindow win=(IHTMLWindow2)doc2.parentWindows; win.execScript("alert('hello!')","javascript");
方法2:
webbrowser1.InvokeScript("eval","alert('hello!')");
7,屏蔽alert、confirm等,通過重定義實現
private voie webbrowser1_navigated(object sender,WebBroserNavigatedEventArgs e) { IHTMLWindow2 win=(IHTMLWindow2)webbrowser1.Document.Window.DomWindow; string s=@"window.alert=null; window.onerror=null;window.confirm=null; windows.open=null; window.showModalDialg=null;"; win.execScript(s,"javascript"); }
8,接收js消息
[ComVisible(true)] //這句要加到類定義前,可與COM通信 private void webbrowser1_Navigated(objec sender,WebBrowserNavigatedEventargs e) { IHTMLWindow2 win=(IHTMLWindow2)webbrowser1.Document.Window.DomWindow; //假設把alert消息傳出來處理 string s=@"function alert(str){window.external.procMessage(str);}"; win.execScript(s,"javascript"); webbrowser1.ObjectForScripting=this; //指定腳本消息送到當前實例處理 } //處理腳本消息的方法 public void procMessage(string s) { MessageBox.Show("腳本消息:"+s); }
