進行webBrower開發的時候，肯定都會遇到一個問題。
那就是怎么樣強制在本窗口打開新窗口的問題。
網上最常見的解決方法就是，
在NewWindow事件中取得要打開的網址，取消打開新窗口，然后在本窗口打開要轉向的網址
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;??
}???????

雖然這種方法能夠解決大部分的要求，但是治標不治本。
而且當網址里面還有漢字的時候就更加麻煩了，比如在百度MP3，歌曲名字都是漢字，和百度空間里面，大部分用戶名都是漢字，所以取的網址都用亂碼。雖然，可以對網址進行編碼，但是并不是所有網頁都是uft-8編碼，對于如何得知網頁的編碼又是一個課題了。

最根本的方法就是重寫了。
新建一個類
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換成我們重寫的ExtendedWebBrowser，添加事件處理
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----------------------

?

要解決這個問題，可以使用下面的方法：

在日常的開發中，大家有時需要用WebBrowser加載URL，來實現某些功能。而這時，我們就不希望所打開的頁面中的鏈接，在新窗口中打開，因為這樣的話，實際上是用系統默認的瀏覽器打開了，從而脫離了你的WebBrowser，也就不能被你所控制了。

假設WebBrowser的Name是 webBrowser1

******* void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)

{????//將所有的鏈接的目標，指向本窗體????

foreach (HtmlElement archor in this.webBrowser1.Document.Links)????

{???

archor.SetAttribute("target", "_self");????

}????//將所有的FORM的提交目標，指向本窗體????foreach (HtmlElement form in this.webBrowser1.Document.Forms){????????form.SetAttribute("target", "_self");????}}

******* void webBrowser1_NewWindow(object sender, CancelEventArgs e){???? e.Cancel = true;}

?

記得將 WebBrowser 的 AllowWebBrowserDrop 設為 false

將 WebBrowser 的 WebBrowserShortcutsEnabled 設為 false

將 WebBrowser 的 IsWebBrowserContextMenuEnabled 設為 false

轉載于:https://www.cnblogs.com/hackpig/archive/2010/02/15/1668396.html

總結

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