[C#]在WebBrowser中截获弹出对话框内容并将其屏蔽

目的：在WebBrowser控件中截获用alert、msgbox等弹出的对话框，获取其内容并将其屏蔽，不予显示

参考：《对ExtendedWebBrowser的再扩展(续)》

         《对ExtendedWebBrowser的再扩展》

         Extended .NET 2.0 WebBrowser Control

         csEXWB2

 

最初是参考对《ExtendedWebBrowser的再扩展(续)》一文，在Extended .NET 2.0 WebBrowser Control基础上添加部分代码来实现此功能，但是实际使用下来发现时灵时不灵，不能完美解决此问题，之后在使用csEXWB过程中发现此程序中可以正常实现此功能，但是由于整个控件与WebBrowser相差较大，难以直接更换，因此研究其代码后将相关部分提取出来用在Extended .NET 2.0 WebBrowser Control上，并增加了少许功能。相关代码如下：

 

IDocHostShowUI：

其实扩展一文主要就是这里有点问题

#region IDocHostShowUI Interface //MIDL_INTERFACE("c4d244b0-d43e-11cf-893b-00aa00bdce1a") //IDocHostShowUI : public IUnknown //{ //public: // virtual HRESULT STDMETHODCALLTYPE ShowMessage( // /* [in] */ HWND hwnd, // /* [in] */ LPOLESTR lpstrText, // /* [in] */ LPOLESTR lpstrCaption, // /* [in] */ DWORD dwType, // /* [in] */ LPOLESTR lpstrHelpFile, // /* [in] */ DWORD dwHelpContext, // /* [out] */ LRESULT *plResult) = 0; // virtual HRESULT STDMETHODCALLTYPE ShowHelp( // /* [in] */ HWND hwnd, // /* [in] */ LPOLESTR pszHelpFile, // /* [in] */ UINT uCommand, // /* [in] */ DWORD dwData, // /* [in] */ POINT ptMouse, // /* [out] */ IDispatch *pDispatchObjectHit) = 0; //}; [ComImport, ComVisible(true)] [Guid("C4D244B0-D43E-11CF-893B-00AA00BDCE1A")] [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] public interface IDocHostShowUI { [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int ShowMessage( IntPtr hwnd, [MarshalAs(UnmanagedType.LPWStr)] string lpstrText, [MarshalAs(UnmanagedType.LPWStr)] string lpstrCaption, [MarshalAs(UnmanagedType.U4)] uint dwType, [MarshalAs(UnmanagedType.LPWStr)] string lpstrHelpFile, [MarshalAs(UnmanagedType.U4)] uint dwHelpContext, [In, Out] ref int lpResult); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int ShowHelp( IntPtr hwnd, [MarshalAs(UnmanagedType.LPWStr)] string pszHelpFile, [MarshalAs(UnmanagedType.U4)] uint uCommand, [MarshalAs(UnmanagedType.U4)] uint dwData, [In, MarshalAs(UnmanagedType.Struct)] tagPOINT ptMouse, [Out, MarshalAs(UnmanagedType.IDispatch)] object pDispatchObjectHit); } #endregion

 

ExtendedBrowserMessageEventArgs：

各枚举用于返回弹出对话框的各种状态

#region ExtendedBrowserMessageEventArgs /// <summary> /// Used in the new showmessage events /// </summary> public class ExtendedBrowserMessageEventArgs : CancelEventArgs { private int _plResult; public int pResult { get { return _plResult; } } public System.Windows.Forms.DialogResult DlgResult { set { _plResult = (int)value; } } private IntPtr _hwnd; public IntPtr hwnd { get { return _hwnd; } } private string _lpstrText; public string Text { get { return _lpstrText; } } private string _lpstrCaption; public string Caption { get { return _lpstrCaption; } } private uint _dwType; public System.Windows.Forms.MessageBoxButtons DlgButtons { get { switch (_dwType & (int)MsgBoxButton.MASK) { case (int)MsgBoxButton.MB_OKCANCEL: return System.Windows.Forms.MessageBoxButtons.OKCancel; case (int)MsgBoxButton.MB_ABORTRETRYIGNORE: return System.Windows.Forms.MessageBoxButtons.AbortRetryIgnore; case (int)MsgBoxButton.MB_YESNOCANCEL: return System.Windows.Forms.MessageBoxButtons.YesNoCancel; case (int)MsgBoxButton.MB_YESNO: return System.Windows.Forms.MessageBoxButtons.YesNo; case (int)MsgBoxButton.MB_RETRYCANCEL: return System.Windows.Forms.MessageBoxButtons.RetryCancel; case (int)MsgBoxButton.MB_OK: default: return System.Windows.Forms.MessageBoxButtons .OK; } } } public System.Windows.Forms.MessageBoxIcon DlgIcon { get { switch (_dwType & (int)MsgBoxIcon.MASK) { case (int)MsgBoxIcon.MB_ICONHAND: return System.Windows.Forms.MessageBoxIcon.Hand; //case (int)MsgBoxIcon.MB_ICONSTOP: // return System.Windows.Forms.MessageBoxIcon.Stop; //case (int)MsgBoxIcon.MB_ICONERROR: // return System.Windows.Forms.MessageBoxIcon.Error; case (int)MsgBoxIcon.MB_ICONQUESTION: return System.Windows.Forms.MessageBoxIcon.Question; case (int)MsgBoxIcon.MB_ICONEXCLAMATION: return System.Windows.Forms.MessageBoxIcon.Exclamation; //case (int)MsgBoxIcon.MB_ICONWARNING: // return System.Windows.Forms.MessageBoxIcon.Warning; case (int)MsgBoxIcon.MB_ICONASTERISK: return System.Windows.Forms.MessageBoxIcon.Asterisk; //case (int)MsgBoxIcon.MB_ICONINFORMATION: // return System.Windows.Forms.MessageBoxIcon.Information; case (int)MsgBoxIcon.MB_ICONNONE: case (int)MsgBoxIcon.MB_USERICON: default: return System.Windows.Forms.MessageBoxIcon.None; } } } public System.Windows.Forms.MessageBoxDefaultButton DlgDefaultButtons { get { switch (_dwType & (int)MsgBoxDefButton.MASK) { case (int)MsgBoxDefButton.MB_DEFBUTTON2: return System.Windows.Forms.MessageBoxDefaultButton.Button2; case (int)MsgBoxDefButton.MB_DEFBUTTON3: return System.Windows.Forms.MessageBoxDefaultButton.Button3; case (int)MsgBoxDefButton.MB_DEFBUTTON1: default: return System.Windows.Forms.MessageBoxDefaultButton.Button1; } } } public System.Windows.Forms.MessageBoxOptions DlgOptions { get { switch (_dwType & (int)MsgBoxOption.MASK) { case (int)MsgBoxOption.MB_DEFAULT_DESKTOP_ONLY: return System.Windows.Forms.MessageBoxOptions.DefaultDesktopOnly; case (int)MsgBoxOption.MB_RIGHT: return System.Windows.Forms.MessageBoxOptions.RightAlign; case (int)MsgBoxOption.MB_RTLREADING: return System.Windows.Forms.MessageBoxOptions.RtlReading; case (int)MsgBoxOption.MB_SERVICE_NOTIFICATION1: case (int)MsgBoxOption.MB_SERVICE_NOTIFICATION2: return System.Windows.Forms.MessageBoxOptions.ServiceNotification; default: return 0; } } } public bool displayHelpButton { get { return (_dwType & (int)MsgBoxHelpButton.MASK) == (int)MsgBoxHelpButton.MB_HELP; } } private string _lpstrHelpFile; public string lpstrHelpFile { get { return _lpstrHelpFile; } } private uint _dwHelpContext; public uint dwHelpContext { get { return _dwHelpContext; } } public ExtendedBrowserMessageEventArgs(IntPtr Hwnd, string LpstrText, string LpstrCaption, uint DwType, string LpstrHelpFile, uint DwHelpContext) //public ExtendedBrowserMessageEventArgs(ref IntPtr Hwnd, string LpstrText, string LpstrCaption, uint DwType, string LpstrHelpFile, uint DwHelpContext) : base() { this._hwnd = Hwnd; _lpstrText = LpstrText; _lpstrCaption = LpstrCaption; _dwType = DwType; _lpstrHelpFile = LpstrHelpFile; _dwHelpContext = DwHelpContext; switch (DlgButtons) { case System.Windows.Forms.MessageBoxButtons.OKCancel: case System.Windows.Forms.MessageBoxButtons.RetryCancel: case System.Windows.Forms.MessageBoxButtons.YesNoCancel: DlgResult = System.Windows.Forms.DialogResult.Cancel; break; case System.Windows.Forms.MessageBoxButtons.YesNo: DlgResult = System.Windows.Forms.DialogResult.No; break; case System.Windows.Forms.MessageBoxButtons.AbortRetryIgnore: DlgResult = System.Windows.Forms.DialogResult.Abort; break; case System.Windows.Forms.MessageBoxButtons.OK: default: DlgResult = System.Windows.Forms.DialogResult.OK; break; } } } public enum MsgBoxButton { MASK = 0x0000000F, MB_OK = 0x00000000, MB_OKCANCEL = 0x00000001, MB_ABORTRETRYIGNORE = 0x00000002, MB_YESNOCANCEL = 0x00000003, MB_YESNO = 0x00000004, MB_RETRYCANCEL = 0x00000005 } public enum MsgBoxIcon { MASK = 0x000000F0, MB_ICONNONE = 0x00000000, MB_ICONHAND = 0x00000010, MB_ICONSTOP = 0x00000010, MB_ICONERROR = 0x00000010, MB_ICONQUESTION = 0x00000020, MB_ICONEXCLAMATION = 0x00000030, MB_ICONWARNING = 0x00000030, MB_ICONASTERISK = 0x00000040, MB_ICONINFORMATION = 0x00000040, MB_USERICON = 0x00000080 } public enum MsgBoxDefButton { MASK = 0x00000F00, MB_DEFBUTTON1 = 0x00000000, MB_DEFBUTTON2 = 0x00000100, MB_DEFBUTTON3 = 0x00000200 //MB_DEFBUTTON4 = 0x00000300 } public enum MsgBoxOption { MASK = 0x003F0000, //MB_SETFOREGROUND = 0x00010000, MB_DEFAULT_DESKTOP_ONLY = 0x00020000, //MB_TOPMOST = 0x00040000, MB_RIGHT = 0x00080000, MB_RTLREADING = 0x00100000, MB_SERVICE_NOTIFICATION1 = 0x00200000, MB_SERVICE_NOTIFICATION2 = 0x00040000 } public enum MsgBoxHelpButton { MASK = 0x00004000, MB_HELP = 0x00004000 } #region

 

主体部分：

插入位置参考扩展一文

#region ExtendedWebBrowserSite public delegate void DocHostShowUIShowMessageEventHandler(object sender, ExtendedBrowserMessageEventArgs e); public event DocHostShowUIShowMessageEventHandler WBDocHostShowUIShowMessage = null; protected override WebBrowserSiteBase CreateWebBrowserSiteBase() { return new ExtendedWebBrowserSite(this); } class ExtendedWebBrowserSite : WebBrowser.WebBrowserSite, IDocHostShowUI//, IDocHostUIHandler { private ExWebBrowser _Browser; public ExtendedWebBrowserSite(ExWebBrowser host) : base(host) { _Browser = host; } #region IDocHostShowUI int IDocHostShowUI.ShowMessage(IntPtr hwnd, string lpstrText, string lpstrCaption, uint dwType, string lpstrHelpFile, uint dwHelpContext, ref int lpResult) { //Initially //lpResult is set 0 //S_OK //Host did not display its UI. MSHTML displays its message box. int iRet = Hresults.S_FALSE; //raise event? if (_Browser.WBDocHostShowUIShowMessage != null) { //Refer to http://msdn2.microsoft.com/en-us/library/ms645505.aspx //for possible values of dwType ExtendedBrowserMessageEventArgs args = new ExtendedBrowserMessageEventArgs(hwnd, lpstrText, lpstrCaption, dwType, lpstrHelpFile, dwHelpContext); _Browser.WBDocHostShowUIShowMessage(this, args); if (args.Cancel == true) { //Host displayed its user interface (UI). MSHTML does not display its message box. iRet = Hresults.S_OK; lpResult = args.pResult; } } ////uncomment to use //else //{ // lpResult = (int)WinApis.MessageBox(hwnd, lpstrText, lpstrCaption, dwType); // iRet = Hresults.S_OK; //} return iRet; } int IDocHostShowUI.ShowHelp(IntPtr hwnd, string pszHelpFile, uint uCommand, uint dwData, tagPOINT ptMouse, object pDispatchObjectHit) { return Hresults.E_NOTIMPL; } #endregion } #endregion

 

调用：

void exwb_WBDocHostShowUIShowMessage(object sender, ExtendedBrowserMessageEventArgs e) { e.Cancel = true; if (e.Text == "确定?") { e.DlgResult = DialogResult.Yes; } else { e.DlgResult = MessageBox.Show(e.Text, e.Caption, e.DlgButtons, e.DlgIcon, e.DlgDefaultButtons, e.DlgOptions, e.displayHelpButton); } }

 

时间太长，已经不记得改动了哪些部分了，如有遗漏还请见谅

以上代码为在ExtendedWebBrowser2中的扩展，如有不明，或者没有找到声明的部分请参考扩展一文，再找不到的话可以在csExWB2中找一下。

 

将 网上另一段代码略作改造用于完整演示：

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;using System.Runtime.InteropServices;using System.Runtime.CompilerServices;namespace WindowsFormsApplication1{ public partial class Form1 : Form { public Form1() { InitializeComponent(); MyWebBrowser1.WBDocHostShowUIShowMessage += new MyWebBrowser.DocHostShowUIShowMessageEventHandler(MyWebBrowser1_WBDocHostShowUIShowMessage); } MyWebBrowser MyWebBrowser1 = new MyWebBrowser(); private void Form1_Load(object sender, EventArgs e) { this.Controls.Add(MyWebBrowser1); MyWebBrowser1.Visible = true; MyWebBrowser1.Navigate("about:blank"); MyWebBrowser1.Document.Write("<mce:script type="text/javascript"><!--alert('我就是确定按钮啊')// --></mce:script>"); } void MyWebBrowser1_WBDocHostShowUIShowMessage(object sender, ExtendedBrowserMessageEventArgs e) { e.Cancel = true;//屏蔽弹出，自行处理 if (MessageBox.Show("是否要屏蔽Alert对话框", "提示", MessageBoxButtons.YesNo) == DialogResult.No) { MessageBox.Show(e.Text, e.Caption); } } } public class MyWebBrowser : WebBrowser { //委托、事件 public delegate void DocHostShowUIShowMessageEventHandler(object sender, ExtendedBrowserMessageEventArgs e); public event DocHostShowUIShowMessageEventHandler WBDocHostShowUIShowMessage = null; #region ExtendedWebBrowserSite class ExtendedWebBrowserSite : WebBrowser.WebBrowserSite, UnsafeNativeMethods.IDocHostShowUI { private MyWebBrowser _Browser; public ExtendedWebBrowserSite(MyWebBrowser host) : base(host) { _Browser = host; } int UnsafeNativeMethods.IDocHostShowUI.ShowMessage(IntPtr hwnd, string lpstrText, string lpstrCaption, uint dwType, string lpstrHelpFile, uint dwHelpContext, ref int lpResult) { int iRet = 1; //Hresults.S_FALSE if (_Browser.WBDocHostShowUIShowMessage != null) { ExtendedBrowserMessageEventArgs args = new ExtendedBrowserMessageEventArgs(hwnd, lpstrText, lpstrCaption, dwType, lpstrHelpFile, dwHelpContext); _Browser.WBDocHostShowUIShowMessage(this, args); if (args.Cancel == true) { iRet = 0;//Hresults.S_OK; lpResult = args.pResult; } } return iRet; } int UnsafeNativeMethods.IDocHostShowUI.ShowHelp(IntPtr hwnd, string pszHelpFile, uint uCommand, uint dwData, UnsafeNativeMethods.tagPOINT ptMouse, object pDispatchObjectHit) { return unchecked((int)0x80004001);//Hresults.E_NOTIMPL } } protected override WebBrowserSiteBase CreateWebBrowserSiteBase() { return new ExtendedWebBrowserSite(this); } #endregion } public class UnsafeNativeMethods { #region IDocHostShowUI [StructLayout(LayoutKind.Explicit, Pack = 4)] public struct __MIDL_IWinTypes_0009 { // Fields [FieldOffset(0)] public int hInproc; [FieldOffset(0)] public int hRemote; } [StructLayout(LayoutKind.Sequential, Pack = 4)] public struct _RemotableHandle { public int fContext; public __MIDL_IWinTypes_0009 u; } [StructLayout(LayoutKind.Sequential, Pack = 4)] public struct tagPOINT { public int x; public int y; } [ComImport, ComVisible(true)] [Guid("C4D244B0-D43E-11CF-893B-00AA00BDCE1A")] [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] public interface IDocHostShowUI { [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int ShowMessage( IntPtr hwnd, [MarshalAs(UnmanagedType.LPWStr)] string lpstrText, [MarshalAs(UnmanagedType.LPWStr)] string lpstrCaption, [MarshalAs(UnmanagedType.U4)] uint dwType, [MarshalAs(UnmanagedType.LPWStr)] string lpstrHelpFile, [MarshalAs(UnmanagedType.U4)] uint dwHelpContext, [In, Out] ref int lpResult); [return: MarshalAs(UnmanagedType.I4)] [PreserveSig] int ShowHelp( IntPtr hwnd, [MarshalAs(UnmanagedType.LPWStr)] string pszHelpFile, [MarshalAs(UnmanagedType.U4)] uint uCommand, [MarshalAs(UnmanagedType.U4)] uint dwData, [In, MarshalAs(UnmanagedType.Struct)] tagPOINT ptMouse, [Out, MarshalAs(UnmanagedType.IDispatch)] object pDispatchObjectHit); } #endregion } #region ExtendedBrowserMessageEventArgs public class ExtendedBrowserMessageEventArgs : CancelEventArgs { private int _plResult; public int pResult { get { return _plResult; } } public System.Windows.Forms.DialogResult DlgResult { set { _plResult = (int)value; } } private IntPtr _hwnd; public IntPtr hwnd { get { return _hwnd; } } private string _lpstrText; public string Text { get { return _lpstrText; } } private string _lpstrCaption; public string Caption { get { return _lpstrCaption; } } private uint _dwType; public System.Windows.Forms.MessageBoxButtons DlgButtons { get { switch (_dwType & (int)MsgBoxButton.MASK) { case (int)MsgBoxButton.MB_OKCANCEL: return System.Windows.Forms.MessageBoxButtons.OKCancel; case (int)MsgBoxButton.MB_ABORTRETRYIGNORE: return System.Windows.Forms.MessageBoxButtons.AbortRetryIgnore; case (int)MsgBoxButton.MB_YESNOCANCEL: return System.Windows.Forms.MessageBoxButtons.YesNoCancel; case (int)MsgBoxButton.MB_YESNO: return System.Windows.Forms.MessageBoxButtons.YesNo; case (int)MsgBoxButton.MB_RETRYCANCEL: return System.Windows.Forms.MessageBoxButtons.RetryCancel; case (int)MsgBoxButton.MB_OK: default: return System.Windows.Forms.MessageBoxButtons.OK; } } } public System.Windows.Forms.MessageBoxIcon DlgIcon { get { switch (_dwType & (int)MsgBoxIcon.MASK) { case (int)MsgBoxIcon.MB_ICONHAND: return System.Windows.Forms.MessageBoxIcon.Hand; case (int)MsgBoxIcon.MB_ICONQUESTION: return System.Windows.Forms.MessageBoxIcon.Question; case (int)MsgBoxIcon.MB_ICONEXCLAMATION: return System.Windows.Forms.MessageBoxIcon.Exclamation; case (int)MsgBoxIcon.MB_ICONASTERISK: return System.Windows.Forms.MessageBoxIcon.Asterisk; case (int)MsgBoxIcon.MB_ICONNONE: case (int)MsgBoxIcon.MB_USERICON: default: return System.Windows.Forms.MessageBoxIcon.None; } } } public System.Windows.Forms.MessageBoxDefaultButton DlgDefaultButtons { get { switch (_dwType & (int)MsgBoxDefButton.MASK) { case (int)MsgBoxDefButton.MB_DEFBUTTON2: return System.Windows.Forms.MessageBoxDefaultButton.Button2; case (int)MsgBoxDefButton.MB_DEFBUTTON3: return System.Windows.Forms.MessageBoxDefaultButton.Button3; case (int)MsgBoxDefButton.MB_DEFBUTTON1: default: return System.Windows.Forms.MessageBoxDefaultButton.Button1; } } } public System.Windows.Forms.MessageBoxOptions DlgOptions { get { switch (_dwType & (int)MsgBoxOption.MASK) { case (int)MsgBoxOption.MB_DEFAULT_DESKTOP_ONLY: return System.Windows.Forms.MessageBoxOptions.DefaultDesktopOnly; case (int)MsgBoxOption.MB_RIGHT: return System.Windows.Forms.MessageBoxOptions.RightAlign; case (int)MsgBoxOption.MB_RTLREADING: return System.Windows.Forms.MessageBoxOptions.RtlReading; case (int)MsgBoxOption.MB_SERVICE_NOTIFICATION1: case (int)MsgBoxOption.MB_SERVICE_NOTIFICATION2: return System.Windows.Forms.MessageBoxOptions.ServiceNotification; default: return 0; } } } public bool displayHelpButton { get { return (_dwType & (int)MsgBoxHelpButton.MASK) == (int)MsgBoxHelpButton.MB_HELP; } } private string _lpstrHelpFile; public string lpstrHelpFile { get { return _lpstrHelpFile; } } private uint _dwHelpContext; public uint dwHelpContext { get { return _dwHelpContext; } } public ExtendedBrowserMessageEventArgs(IntPtr Hwnd, string LpstrText, string LpstrCaption, uint DwType, string LpstrHelpFile, uint DwHelpContext) : base() { this._hwnd = Hwnd; _lpstrText = LpstrText; _lpstrCaption = LpstrCaption; _dwType = DwType; _lpstrHelpFile = LpstrHelpFile; _dwHelpContext = DwHelpContext; switch (DlgButtons) { case System.Windows.Forms.MessageBoxButtons.OKCancel: case System.Windows.Forms.MessageBoxButtons.RetryCancel: case System.Windows.Forms.MessageBoxButtons.YesNoCancel: DlgResult = System.Windows.Forms.DialogResult.Cancel; break; case System.Windows.Forms.MessageBoxButtons.YesNo: DlgResult = System.Windows.Forms.DialogResult.No; break; case System.Windows.Forms.MessageBoxButtons.AbortRetryIgnore: DlgResult = System.Windows.Forms.DialogResult.Abort; break; case System.Windows.Forms.MessageBoxButtons.OK: default: DlgResult = System.Windows.Forms.DialogResult.OK; break; } } } public enum MsgBoxButton { MASK = 0x0000000F, MB_OK = 0x00000000, MB_OKCANCEL = 0x00000001, MB_ABORTRETRYIGNORE = 0x00000002, MB_YESNOCANCEL = 0x00000003, MB_YESNO = 0x00000004, MB_RETRYCANCEL = 0x00000005 } public enum MsgBoxIcon { MASK = 0x000000F0, MB_ICONNONE = 0x00000000, MB_ICONHAND = 0x00000010, MB_ICONSTOP = 0x00000010, MB_ICONERROR = 0x00000010, MB_ICONQUESTION = 0x00000020, MB_ICONEXCLAMATION = 0x00000030, MB_ICONWARNING = 0x00000030, MB_ICONASTERISK = 0x00000040, MB_ICONINFORMATION = 0x00000040, MB_USERICON = 0x00000080 } public enum MsgBoxDefButton { MASK = 0x00000F00, MB_DEFBUTTON1 = 0x00000000, MB_DEFBUTTON2 = 0x00000100, MB_DEFBUTTON3 = 0x00000200 } public enum MsgBoxOption { MASK = 0x003F0000, MB_DEFAULT_DESKTOP_ONLY = 0x00020000, MB_RIGHT = 0x00080000, MB_RTLREADING = 0x00100000, MB_SERVICE_NOTIFICATION1 = 0x00200000, MB_SERVICE_NOTIFICATION2 = 0x00040000 } public enum MsgBoxHelpButton { MASK = 0x00004000, MB_HELP = 0x00004000 } #endregion }

PS:MyWebBrowser1.Document.Write("<script>alert('我就是确定按钮啊')</script>");一行无法正常显示