C# webBrowser禁止在新窗口打开，强制在本窗口打开

进行webBrower开发的时候，肯定都会遇到一个问题。
那就是怎么样强制在本窗口打开新窗口的问题。
网上最常见的解决方法就是，
在NewWindow 事件中取得要打开的网址，取消打开新窗口，然后在本窗口打开要转向的网址

private   void  webBrowser_1_NewWindow( object  sender, CancelEventArgs e)
{
    WebBrowser webBrowser_temp = (WebBrowser)sender;
     string  newUrl = webBrowser_temp.Document.ActiveElement.GetAttribute( "href" );
    webBrowser_1.Url =  new  Uri(newUrl);
    e.Cancel =  true ;
}

虽然这种方法能够解决大部分的要求，但是治标不治本。
而且当网址里面还有汉字的时候就更加麻烦了，比如在百度MP3，歌曲名字都是汉字，和百度空间里面，大部分用户名都是汉字，所以取的网址都用乱码。虽然，可以对网址进行编码，但是并不是所有网页都是uft-8编码，对于如何得知网页的编码又是一个课题了。

最根本的方法就是重写了。
新建一个类

using  System;
using  System.Collections.Generic;
using  System.Text;

namespace  webTestRecorder
{

     public   class  ExtendedWebBrowser : System.Windows.Forms.WebBrowser
    {
        System.Windows.Forms.AxHost.ConnectionPointCookie cookie;
        WebBrowserExtendedEvents events;

         //This method will be called to give you a chance to create your own event sink
         protected   override   void  CreateSink()
        {
             //MAKE SURE TO CALL THE BASE or the normal events won't fire
             base .CreateSink();
            events =  new  WebBrowserExtendedEvents( this );
            cookie =  new  System.Windows.Forms.AxHost.ConnectionPointCookie( this .ActiveXInstance, events,  typeof (DWebBrowserEvents2));
        }

         protected   override   void  DetachSink()
        {
             if  ( null  != cookie)
            {
                cookie.Disconnect();
                cookie =  null ;
            }
             base .DetachSink();
        }

         //This new event will fire when the page is navigating
         public   event  EventHandler<WebBrowserExtendedNavigatingEventArgs> BeforeNavigate;
         public   event  EventHandler<WebBrowserExtendedNavigatingEventArgs> BeforeNewWindow;

         protected   void  OnBeforeNewWindow( string  url,  out   bool  cancel)
        {
            EventHandler<WebBrowserExtendedNavigatingEventArgs> h = BeforeNewWindow;
            WebBrowserExtendedNavigatingEventArgs args =  new  WebBrowserExtendedNavigatingEventArgs(url,  null );
             if  ( null  != h)
            {
                h( this , args);
            }
            cancel = args.Cancel;
        }

         protected   void  OnBeforeNavigate( string  url,  string  frame,  out   bool  cancel)
        {
            EventHandler<WebBrowserExtendedNavigatingEventArgs> h = BeforeNavigate;
            WebBrowserExtendedNavigatingEventArgs args =  new  WebBrowserExtendedNavigatingEventArgs(url, frame);
             if  ( null  != h)
            {
                h( this , args);
            }
             //Pass the cancellation chosen back out to the events
            cancel = args.Cancel;
        }
         //This class will capture events from the WebBrowser
         class  WebBrowserExtendedEvents : System.Runtime.InteropServices.StandardOleMarshalObject, DWebBrowserEvents2
        {
            ExtendedWebBrowser _Browser;
             public  WebBrowserExtendedEvents(ExtendedWebBrowser browser) { _Browser = browser; }

             //Implement whichever events you wish
             public   void  BeforeNavigate2( object  pDisp,  ref   object  URL,  ref   object  flags,  ref   object  targetFrameName,  ref   object  postData,  ref   object  headers,  ref   bool  cancel)
            {
                _Browser.OnBeforeNavigate(( string )URL, ( string )targetFrameName,  out  cancel);
            }

             public   void  NewWindow3( object  pDisp,  ref   bool  cancel,  ref   object  flags,  ref   object  URLContext,  ref   object  URL)
            {
                _Browser.OnBeforeNewWindow(( string )URL,  out  cancel);
            }

        }
        [System.Runtime.InteropServices.ComImport(), System.Runtime.InteropServices.Guid( "34A715A0-6587-11D0-924A-0020AFC7AC4D" ),
        System.Runtime.InteropServices.InterfaceTypeAttribute(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIDispatch),
        System.Runtime.InteropServices.TypeLibType(System.Runtime.InteropServices.TypeLibTypeFlags.FHidden)]
         public   interface  DWebBrowserEvents2
        {

            [System.Runtime.InteropServices.DispId(250)]
             void  BeforeNavigate2(
                [System.Runtime.InteropServices.In,
                System.Runtime.InteropServices.MarshalAs(System.Runtime.InteropServices.UnmanagedType.IDispatch)]  object  pDisp,
                [System.Runtime.InteropServices.In]  ref   object  URL,
                [System.Runtime.InteropServices.In]  ref   object  flags,
                [System.Runtime.InteropServices.In]  ref   object  targetFrameName, [System.Runtime.InteropServices.In]  ref   object  postData,
                [System.Runtime.InteropServices.In]  ref   object  headers,
                [System.Runtime.InteropServices.In,
                System.Runtime.InteropServices.Out]  ref   bool  cancel);
            [System.Runtime.InteropServices.DispId(273)]
             void  NewWindow3(
                [System.Runtime.InteropServices.In,
                System.Runtime.InteropServices.MarshalAs(System.Runtime.InteropServices.UnmanagedType.IDispatch)]  object  pDisp,
                [System.Runtime.InteropServices.In, System.Runtime.InteropServices.Out]  ref   bool  cancel,
                [System.Runtime.InteropServices.In]  ref   object  flags,
                [System.Runtime.InteropServices.In]  ref   object  URLContext,
                [System.Runtime.InteropServices.In]  ref   object  URL);

        }
    }

     public   class  WebBrowserExtendedNavigatingEventArgs : System.ComponentModel.CancelEventArgs
    {
         private   string  _Url;
         public   string  Url
        {
             get  {  return  _Url; }
        }

         private   string  _Frame;
         public   string  Frame
        {
             get  {  return  _Frame; }
        }

         public  WebBrowserExtendedNavigatingEventArgs( string  url,  string  frame)
            :  base ()
        {
            _Url = url;
            _Frame = frame;
        }
    }
}

 

然后把webBrowser换成我们重写的ExtendedWebBrowser，添加事件处理

ieBrowser =  new  ExtendedWebBrowser();
ieBrowser.BeforeNewWindow +=  new  EventHandler<WebBrowserExtendedNavigatingEventArgs>(ieBrowser_BeforeNewWindow);

然后在其BeforeNewWindow 事件中：

void  ieBrowser_BeforeNewWindow( object  sender, WebBrowserExtendedNavigatingEventArgs e)
{
     e.Cancel= true ;
     ((ExtendedWebBrowser)sender).Navigate(e.Url);
}