C# webBrowser禁止在新窗口打开，强制在本窗口打开 （转载）

进行webBrower开发的时候，肯定都会遇到一个问题。

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

{

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