C# 我怎样才能覆盖ie';使用WPF浏览器控件时,是否在导航2之前?
据我所知,WPF的Brwoser控件是ie Active-X控件的包装。后者有一个BeforeNavigate2方法,而我在WPF WebBrowser控件中找不到这个方法。我有办法解决这个问题吗 谢谢!C# 我怎样才能覆盖ie';使用WPF浏览器控件时,是否在导航2之前?,c#,wpf,browser,controls,beforenavigate2,C#,Wpf,Browser,Controls,Beforenavigate2,据我所知,WPF的Brwoser控件是ie Active-X控件的包装。后者有一个BeforeNavigate2方法,而我在WPF WebBrowser控件中找不到这个方法。我有办法解决这个问题吗 谢谢! 马克是的。WPF的WebBrowser控制真是死气沉沉。除此之外,它甚至是密封的 您必须使用Windows.Forms的WebBrowser控件并将其嵌入WindowsFormsHost中 此外,您必须从WebBrowser派生一个类,并在其中执行一些COM魔术 创建如下所示的UserCont
马克是的。WPF的WebBrowser控制真是死气沉沉。除此之外,它甚至是密封的 您必须使用Windows.Forms的WebBrowser控件并将其嵌入WindowsFormsHost中 此外,您必须从WebBrowser派生一个类,并在其中执行一些COM魔术 创建如下所示的UserControl:
<UserControl x:Class="MP.Assistant.WpfClient.DialogContentControls.WebBrowserHost"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:DialogContentControls="clr-namespace:MP.Assistant.WpfClient.DialogContentControls"
mc:Ignorable="d"
d:DesignHeight="300"
d:DesignWidth="300">
<Grid Name="BrowserHost">
<WindowsFormsHost>
<DialogContentControls:ExtendedWinFormsWebBrowser x:Name="WebBrowser" />
</WindowsFormsHost>
</Grid>
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Security.Permissions;
using System.Windows.Forms;
namespace MP.Assistant.WpfClient.DialogContentControls
{
/// Imports the BeforeNavigate2 method from the OLE DWebBrowserEvents2
/// interface.
[ComImport]
[Guid("34A715A0-6587-11D0-924A-0020AFC7AC4D")]
[InterfaceType(ComInterfaceType.InterfaceIsIDispatch)]
[TypeLibType(TypeLibTypeFlags.FHidden)]
public interface DWebBrowserEvents2
{
[PreserveSig]
[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
[DispId(250)]
void BeforeNavigate2([In] [MarshalAs(UnmanagedType.IDispatch)] object pDisp,
[In] [MarshalAs(UnmanagedType.Struct)] ref object URL,
[In] [MarshalAs(UnmanagedType.Struct)] ref object Flags,
[In] [MarshalAs(UnmanagedType.Struct)] ref object TargetFrameName,
[In] [MarshalAs(UnmanagedType.Struct)] ref object PostData,
[In] [MarshalAs(UnmanagedType.Struct)] ref object Headers,
[In] [Out] ref bool Cancel);
}
public class ExtendedWinFormsWebBrowser : WebBrowser
{
// Handles the NavigateError event from the underlying ActiveX
// control by raising the NavigateError event defined in this class.
AxHost.ConnectionPointCookie cookie;
ExtendedWinFormsWebBrowserEventHelper helper;
bool renavigating;
public ExtendedWinFormsWebBrowser()
{
AdditionalHeaders = new string[] {};
}
public string[] AdditionalHeaders { get; set; }
[PermissionSet(SecurityAction.LinkDemand, Name = "FullTrust")]
protected override void CreateSink()
{
base.CreateSink();
// Create an instance of the client that will handle the event
// and associate it with the underlying ActiveX control.
helper = new ExtendedWinFormsWebBrowserEventHelper(this);
cookie = new AxHost.ConnectionPointCookie(ActiveXInstance, helper, typeof (DWebBrowserEvents2));
}
[PermissionSetAttribute(SecurityAction.LinkDemand, Name = "FullTrust")]
protected override void DetachSink()
{
// Disconnect the client that handles the event
// from the underlying ActiveX control.
if (cookie != null)
{
cookie.Disconnect();
cookie = null;
}
base.DetachSink();
}
void OnBeforeNavigate2(object pDisp,
ref object url,
ref object flags,
ref object targetFrameName,
ref object postData,
ref object headers,
ref bool cancel)
{
if (!renavigating)
{
if (AdditionalHeaders.Length > 0)
{
headers += string.Join("\r\n", AdditionalHeaders) + "\r\n";
renavigating = true;
cancel = true;
Navigate((string)url, (string)targetFrameName, (byte[])postData, (string)headers);
}
}
else
{
renavigating = false;
}
}
#region Nested type: ExtendedWinFormsWebBrowserEventHelper
class ExtendedWinFormsWebBrowserEventHelper : StandardOleMarshalObject, DWebBrowserEvents2
{
readonly ExtendedWinFormsWebBrowser parent;
public ExtendedWinFormsWebBrowserEventHelper(ExtendedWinFormsWebBrowser parent)
{
this.parent = parent;
}
#region DWebBrowserEvents2 Members
public void BeforeNavigate2(object pDisp,
ref object URL,
ref object Flags,
ref object TargetFrameName,
ref object PostData,
ref object Headers,
ref bool Cancel)
{
parent.OnBeforeNavigate2(pDisp,
ref URL,
ref Flags,
ref TargetFrameName,
ref PostData,
ref Headers,
ref Cancel);
}
#endregion
}
#endregion
}
}
然后从您的代码隐藏中使用WebBrowser(其名称与XAML中的名称类似),并提供具有所需值的附加标头