在同一个WebBrowser 中打开网页

轉身遇見沵 · 发表于 2013-4-20 18:49:47

剧网络资料显示 NewWindow 事件中可以实现这个功能，browser.StatusText 就是新窗口的url，为什么我得到的StatusText 的值会是“完成”? 附上代码
   browser.NewWindow+=new CancelEventHandler(browser_NewWindow);
   ……
   ……
   void browser_NewWindow(object sender,CancelEventArgs e)
      {
         string newurl = ((WebBrowser)sender).StatusText;
         MessageBox.Show(newurl);
         browser.Navigate(newurl);
         e.Cancel = true;
      }

站长苏飞 · 发表于 2013-4-20 20:12:59

这里有个例子参数一下吧

ExtendWebBrowser_VS2005.rar (14.78 KB, 下载次数: 282)

2013-4-20 20:12 上传

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这个本身就有一些问题，有时候可能会取不到，解决方法如下
[code=csharp]ExtendedWebBrowser webBrowser;

      private void webBrowser_BeforeNavigate(object sender, EventArgs e)
      {

      }

      //增加了这个事件,可以替代原来的NewWindow事件.
      private void webBrowser_BeforeNewWindow(object sender, EventArgs e)
      {
//使用这个类可以获取
         WebBrowserExtendedNavigatingEventArgs eventArgs = e as WebBrowserExtendedNavigatingEventArgs;
         webBrowser.Navigate(eventArgs.Url);
         eventArgs.Cancel = true;
      }

      private void FrmWebBrowser_Load(object sender, EventArgs e)
      {
         webBrowser.Navigate("http://www.sufeinet.com/");
      }[/code]

WebBrowserExtendedNavigatingEventArgs 类如下
[code=csharp]public class WebBrowserExtendedNavigatingEventArgs : 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;
      }
}

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 BeforeNavigate;
      public event EventHandler BeforeNewWindow;

      protected void OnBeforeNewWindow(string url, out bool cancel)
      {
         EventHandler 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 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);
      }
}[/code]
本类来自 http://vsug.jp/tabid/63/forumid/ ... /topic/Default.aspx

轉身遇見沵 · 发表于 2013-4-21 15:10:23

站长苏飞发表于 2013-4-20 20:12
这里有个例子参数一下吧

这个本身就有一些问题，有时候可能会取不到，解决方法如下

谢谢你，我已经解决了

站长苏飞 · 发表于 2013-4-21 15:13:21

轉身遇見沵发表于 2013-4-21 15:10
谢谢你，我已经解决了

怎么解决的

轉身遇見沵 · 发表于 2013-4-21 15:29:56

那个网页中一个Submit按钮，点击了会在新的窗口中打开网页，把这个按钮所在的表单<form>的target属性设置成“_self”，它就不在新窗口中打开了

站长苏飞 · 发表于 2013-4-21 15:54:14

轉身遇見沵发表于 2013-4-21 15:29
那个网页中一个Submit按钮，点击了会在新的窗口中打开网页，把这个按钮所在的表单的target属性设置成“_sel ...

你是这个意思啊，理解了。

轉身遇見沵 · 发表于 2013-4-21 16:01:17

我又遇到一个问题，麻烦您帮我看一下

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