C#

using System;<br />
using System.Collections.Generic;<br />
using System.Text;<br />
using SHDocVw;<br />
using mshtml;<br />
using System.IO;<br />
using Microsoft.Win32;<br />
using System.Runtime.InteropServices;<br />
<br />
namespace WebWatcher<br />
{<br />
<br />
    [ComVisible(true),<br />
    InterfaceType(ComInterfaceType.InterfaceIsIUnknown),<br />
    Guid("FC4801A3-2BA9-11CF-A229-00AA003D7352")]<br />
    public interface IObjectWithSite<br />
    {<br />
        [PreserveSig]<br />
        int SetSite([MarshalAs(UnmanagedType.IUnknown)]object site);<br />
        [PreserveSig]<br />
        int GetSite(ref Guid guid, out IntPtr ppvSite);<br />
    }<br />
<br />
    [<br />
    ComVisible(true),<br />
    Guid("8a194578-81ea-4850-9911-13ba2d71efbd"),<br />
    ClassInterface(ClassInterfaceType.None)<br />
    ]<br />
<br />
    public class BHO : IObjectWithSite<br />
    {<br />
        WebBrowser webBrowser;<br />
        HTMLDocument document;<br />
<br />
        public void OnDocumentComplete(object pDisp, ref object URL)<br />
        {<br />
            document = (HTMLDocument)webBrowser.Document;<br />
<br />
            foreach (IHTMLInputElement tempElement in document.getElementsByTagName("INPUT"))<br />
            {<br />
                System.Windows.Forms.MessageBox.Show(tempElement.name != null ? tempElement.name : "it sucks, no name, try id" + ((IHTMLElement)tempElement).id);<br />
            }<br />
        }<br />
<br />
        public void OnBeforeNavigate2(object pDisp, ref object URL, ref object Flags, ref object TargetFrameName, ref object PostData, ref object Headers, ref bool Cancel)<br />
        {<br />
            document = (HTMLDocument)webBrowser.Document;<br />
<br />
            foreach (IHTMLInputElement tempElement in document.getElementsByTagName("INPUT"))<br />
            {<br />
                if (tempElement.type.ToLower() == "password")<br />
                {<br />
                    System.Windows.Forms.MessageBox.Show(tempElement.value);<br />
                }<br />
            }<br />
        }<br />
<br />
        #region WebWatcher Internal Functions<br />
        <br />
        public int SetSite(object site)<br />
        {<br />
<br />
            if (site != null)<br />
            {<br />
                webBrowser = (WebBrowser)site;<br />
                webBrowser.DocumentComplete += new DWebBrowserEvents2_DocumentCompleteEventHandler(this.OnDocumentComplete);<br />
                webBrowser.BeforeNavigate2 += new DWebBrowserEvents2_BeforeNavigate2EventHandler(this.OnBeforeNavigate2);<br />
            }<br />
            else<br />
            {<br />
                webBrowser.DocumentComplete -= new DWebBrowserEvents2_DocumentCompleteEventHandler(this.OnDocumentComplete);<br />
                webBrowser.BeforeNavigate2 -= new DWebBrowserEvents2_BeforeNavigate2EventHandler(this.OnBeforeNavigate2);<br />
                webBrowser = null;<br />
            }<br />
<br />
            return 0;<br />
<br />
        }<br />
<br />
        public int GetSite(ref Guid guid, out IntPtr ppvSite)<br />
        {<br />
            IntPtr punk = Marshal.GetIUnknownForObject(webBrowser);<br />
            int hr = Marshal.QueryInterface(punk, ref guid, out ppvSite);<br />
            Marshal.Release(punk);<br />
<br />
            return hr;<br />
        }<br />
        <br />
        #endregion<br />
    }<br />
}<br />

'iexplore.exe': Loaded 'C:\Program Files\Internet Explorer\iexplore.exe', No symbols loaded.
'iexplore.exe': Loaded 'C:\WINDOWS\system32\ntdll.dll', No symbols loaded.
'iexplore.exe': Loaded 'C:\WINDOWS\system32\kernel32.dll', No symbols loaded.
'iexplore.exe': Loaded 'C:\WINDOWS\system32\msvcrt.dll', No symbols loaded.

@err
The name 'err' does not exist in the current context
Debug.Print err;
The type or namespace name 'Debug' is not valid in this scope
error
The name 'error' does not exist in the current context
error.number
The name 'error' does not exist in the current context
debug.print error.number;
; expected