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
- p rivate 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
- {
- p rivate string _Url;
- public string Url
- {
- get { return _Url; }
- }
- p rivate 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);
- }
---------------------另一方案下下----------------------
要解决这个问题,可以使用下面的方法:
在日常的开发中,大家有时需要用WebBrowser加载URL,来实现某些功能。而这时,我们就不希望所打开的页面中的链接,在新窗口中打开,因为这样的话,实际上是用系统默认的浏览器打开了,从而脱离了你的WebBrowser,也就不能被你所控制了。
假设WebBrowser的Name是 webBrowser1
- ******* void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
- { //将所有的链接的目标,指向本窗体
- foreach (HtmlElement archor in this.webBrowser1.Document.Links)
- {
- archor.SetAttribute("target", "_self");
- } //将所有的FORM的提交目标,指向本窗体 foreach (HtmlElement form in this.webBrowser1.Document.Forms){ form.SetAttribute("target", "_self"); }}
- ******* void webBrowser1_NewWindow(object sender, CancelEventArgs e){ e.Cancel = true;}
记得将 WebBrowser 的 AllowWebBrowserDrop 设为 false
将 WebBrowser 的 WebBrowserShortcutsEnabled 设为 false
将 WebBrowser 的 IsWebBrowserContextMenuEnabled 设为 false
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