实例介绍
【实例简介】
【实例截图】
【核心代码】
using System;
using System.Drawing;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Windows.Forms;
using Microsoft.Win32;
using mshtml;
namespace SpiderTool
{
#region COM Interfaces
[ComImport,
Guid("00000112-0000-0000-C000-000000000046"),
InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOleObject
{
void SetClientSite(IOleClientSite pClientSite);
void GetClientSite(IOleClientSite ppClientSite);
void SetHostNames(object szContainerApp, object szContainerObj);
void Close(uint dwSaveOption);
void SetMoniker(uint dwWhichMoniker, object pmk);
void GetMoniker(uint dwAssign, uint dwWhichMoniker, object ppmk);
void InitFromData(IDataObject pDataObject, bool
fCreation, uint dwReserved);
void GetClipboardData(uint dwReserved, IDataObject ppDataObject);
void DoVerb(uint iVerb, uint lpmsg, object pActiveSite,
uint lindex, uint hwndParent, uint lprcPosRect);
void EnumVerbs(object ppEnumOleVerb);
void Update();
void IsUpToDate();
void GetUserClassID(uint pClsid);
void GetUserType(uint dwFormOfType, uint pszUserType);
void SetExtent(uint dwDrawAspect, uint psizel);
void GetExtent(uint dwDrawAspect, uint psizel);
void Advise(object pAdvSink, uint pdwConnection);
void Unadvise(uint dwConnection);
void EnumAdvise(object ppenumAdvise);
void GetMiscStatus(uint dwAspect, uint pdwStatus);
void SetColorScheme(object pLogpal);
}
[ComImport,
Guid("00000118-0000-0000-C000-000000000046"),
InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOleClientSite
{
void SaveObject();
void GetMoniker(uint dwAssign, uint dwWhichMoniker, object ppmk);
void GetContainer(object ppContainer);
void ShowObject();
void OnShowWindow(bool fShow);
void RequestNewObjectLayout();
}
[ComImport,
Guid("6d5140c1-7436-11ce-8034-00aa006009fa"),
InterfaceType(ComInterfaceType.InterfaceIsIUnknown),
ComVisible(false)]
public interface IServiceProvider
{
[return: MarshalAs(UnmanagedType.I4)]
[PreserveSig]
int QueryService(ref Guid guidService, ref Guid riid, out IntPtr
ppvObject);
}
[ComImport, Guid("79EAC9D0-BAF9-11CE-8C82-00AA004BA90B"),
InterfaceType(ComInterfaceType.InterfaceIsIUnknown),
ComVisible(false)]
public interface IAuthenticate
{
[return: MarshalAs(UnmanagedType.I4)]
[PreserveSig]
int Authenticate(ref IntPtr phwnd,
ref IntPtr pszUsername,
ref IntPtr pszPassword
);
}
#endregion
public static class WebBrowserExtend
{
#region 代理安培版本
[DllImport(@"wininet",
SetLastError = true,
CharSet = CharSet.Auto,
EntryPoint = "InternetSetOption",
CallingConvention = CallingConvention.StdCall)]
public static extern bool InternetSetOption
(
int hInternet,
int dmOption,
IntPtr lpBuffer,
int dwBufferLength
);
/// <summary>
/// 设置代理
/// </summary>
/// <param name="webBrowser"></param>
/// <param name="ip"></param>
public static void SetProxy(this WebBrowser webBrowser, string ip)
{
//打开注册表
RegistryKey regKey = Registry.CurrentUser;
string SubKeyPath = @"Software\Microsoft\Windows\CurrentVersion\Internet Settings";
RegistryKey optionKey = regKey.OpenSubKey(SubKeyPath, true);
//更改健值，设置代理，
optionKey.SetValue("ProxyEnable", 1);
optionKey.SetValue("ProxyServer", ip);
//激活代理设置
InternetSetOption(0, 39, IntPtr.Zero, 0);
InternetSetOption(0, 37, IntPtr.Zero, 0);
}
/// <summary>
/// 取消代理
/// </summary>
/// <param name="webBrowser"></param>
public static void Cancelproxy(this WebBrowser webBrowser)
{
//打开注册表
RegistryKey regKey = Registry.CurrentUser;
const string subKeyPath = @"Software\Microsoft\Windows\CurrentVersion\Internet Settings";
RegistryKey optionKey = regKey.OpenSubKey(subKeyPath, true);
//更改健值，取消代理
if (optionKey != null) optionKey.SetValue("ProxyEnable", 0);
//激活代理设置
InternetSetOption(0, 39, IntPtr.Zero, 0);
InternetSetOption(0, 37, IntPtr.Zero, 0);
}
#endregion
#region 代理
public static Guid IID_IAuthenticate = new Guid("79eac9d0-baf9-11ce-8c82-00aa004ba90b");
public const int INET_E_DEFAULT_ACTION = unchecked((int)0x800C0011);
public const int S_OK = unchecked((int)0x00000000);
#region IOleClientSite Members
#endregion
#region IServiceProvider Members
public static int QueryService(this WebBrowser webBrowser, ref Guid guidService, ref Guid riid, out IntPtr ppvObject)
{
int nRet = guidService.CompareTo(IID_IAuthenticate); // Zero returned if the compared objects are equal
if (nRet == 0)
{
nRet = riid.CompareTo(IID_IAuthenticate); // Zero returned if the compared objects are equal
if (nRet == 0)
{
ppvObject = Marshal.GetComInterfaceForObject(webBrowser, typeof(IAuthenticate));
return S_OK;
}
}
ppvObject = new IntPtr();
return INET_E_DEFAULT_ACTION;
}
#endregion
#region IAuthenticate Members
private static string userName = "";
private static string passWord = "";
public static int Authenticate(this WebBrowser webBrowser, ref IntPtr phwnd, ref IntPtr pszUsername, ref IntPtr pszPassword)
{
IntPtr sUser = Marshal.StringToCoTaskMemAuto(userName);
IntPtr sPassword = Marshal.StringToCoTaskMemAuto(passWord);
pszUsername = sUser;
pszPassword = sPassword;
return S_OK;
}
#endregion
public struct Struct_INTERNET_PROXY_INFO
{
public int dwAccessType;
public IntPtr proxy;
public IntPtr proxyBypass;
};
[DllImport("wininet.dll", SetLastError = true)]
private static extern bool InternetSetOption(IntPtr hInternet, int dwOption, IntPtr lpBuffer, int lpdwBufferLength);
private static void RefreshIESettings(this WebBrowser webBrowser, string strProxy)
{
const int INTERNET_OPTION_PROXY = 38;
const int INTERNET_OPEN_TYPE_PROXY = 3;
Struct_INTERNET_PROXY_INFO struct_IPI;
// Filling in structure
struct_IPI.dwAccessType = INTERNET_OPEN_TYPE_PROXY;
struct_IPI.proxy = Marshal.StringToHGlobalAnsi(strProxy);
struct_IPI.proxyBypass = Marshal.StringToHGlobalAnsi("local");
// Allocating memory
IntPtr intptrStruct = Marshal.AllocCoTaskMem(Marshal.SizeOf(struct_IPI));
// Converting structure to IntPtr
Marshal.StructureToPtr(struct_IPI, intptrStruct, true);
bool iReturn = InternetSetOption(IntPtr.Zero, INTERNET_OPTION_PROXY, intptrStruct, Marshal.SizeOf(struct_IPI));
}
#endregion
#region 委托
private delegate void NoParam();
private delegate void OneStringParam(string str);
private delegate void TwoSstringParam(string str1, string str2);
private delegate void ThreeStringParam(string str1, string str2, string str3);
private delegate void FourStringParam(string str1, string str2, string str3, string str4);
private delegate void FiveStringparam(string str1, string str2, string str3, string str4, string str5);
//private delegate void OnParam();
private delegate Bitmap ReturnBitMapOnParam();
private delegate HtmlDocument GetHtmlDocumentDelegate();
private delegate string GetStringDelegate();
private delegate bool GetBoolDelegate();
private delegate WebBrowserReadyState GetWebBrowserReadyState();
#endregion
#region 屏蔽弹框
private const string Js = "window.alert = null;\r\nwindow.confirm = null;\r\nwindow.open = null;\r\nwindow.showModalDialog = null;";
#endregion
#region 获得页面htmlSource
/// <summary>
/// 当前页面的Document(异步成员)
/// </summary>
public static HtmlDocument Document(this WebBrowser webBrowser)
{
if (webBrowser.InvokeRequired)//控件的 Handle 是在与调用线程不同的线程上创建的（说明您必须通过 Invoke 方法对控件进行调用），为 true；否则为 false。
{
IAsyncResult iar = webBrowser.BeginInvoke(new GetHtmlDocumentDelegate(delegate() { return webBrowser.Document; }));
return (HtmlDocument)webBrowser.EndInvoke(iar);
}
else
{
return webBrowser.Document;
}
//set { _WebHtml = value; }
}
/// <summary>
/// 当前页面的HtmlSource(异步成员)
/// </summary>
public static string DocumentText(this WebBrowser webBrowser)
{
if (webBrowser.InvokeRequired)//控件的 Handle 是在与调用线程不同的线程上创建的（说明您必须通过 Invoke 方法对控件进行调用），为 true；否则为 false。
{
IAsyncResult iar = webBrowser.BeginInvoke(new GetStringDelegate(delegate() { return webBrowser.DocumentText; }));
return webBrowser.EndInvoke(iar).ToString();
}
else
{
return webBrowser.DocumentText;
}
}
/// <summary>
/// 当前页面的HtmlSource(异步成员)
/// </summary>
public static string InnerBodyHtml(this WebBrowser webBrowser)
{
if (webBrowser.InvokeRequired)//控件的 Handle 是在与调用线程不同的线程上创建的（说明您必须通过 Invoke 方法对控件进行调用），为 true；否则为 false。
{
IAsyncResult iar = webBrowser.BeginInvoke(new GetStringDelegate(() => InnerBodyHtml(webBrowser)));
return webBrowser.EndInvoke(iar).ToString();
}
else
{
try
{
HtmlDocument document = webBrowser.Document;
if (document != null) if (document.Body != null) return document.Body.InnerHtml;
}
catch (Exception)
{
}
return "";
}
}
/// <summary>
/// 得到当前页面的Html如果页面没加载完.会自动等待(异步成员)
/// </summary>
public static string WaitInnerBodyHtml(this WebBrowser webBrowser)
{
while (webBrowser.ReadyState != WebBrowserReadyState.Complete || IsBusy(webBrowser))
{
System.Threading.Thread.Sleep(50);
}
return InnerBodyHtml(webBrowser);
}
/// <summary>
/// 得到当前控件的状态(异步成员)
/// </summary>
public static WebBrowserReadyState ReadyState(this WebBrowser webBrowser)
{
if (webBrowser.InvokeRequired)
{
IAsyncResult iar = webBrowser.BeginInvoke(new GetWebBrowserReadyState(() => ReadyState(webBrowser)));
return (WebBrowserReadyState)webBrowser.EndInvoke(iar);
}
else
{
return webBrowser.ReadyState;
}
}
/// <summary>
/// 指示当前控件是否在加载新文档(异步成员)
/// </summary>
public static bool IsBusy(this WebBrowser webBrowser)
{
if (webBrowser.InvokeRequired)
{
IAsyncResult iar = webBrowser.BeginInvoke(new GetBoolDelegate(() => IsBusy(webBrowser)));
return (bool)webBrowser.EndInvoke(iar);
}
else
{
return IsBusy(webBrowser);
}
}
#endregion
#region 内存回收
[DllImport("kernel32.dll", EntryPoint = "SetProcessWorkingSetSize")]
public static extern int SetProcessWorkingSetSize(IntPtr process, int minSize, int maxSize);
/// <summary>
/// 释放内存
/// </summary>
public static void ClearMemory()
{
GC.Collect();
GC.WaitForPendingFinalizers();
if (Environment.OSVersion.Platform == PlatformID.Win32NT)
{
SetProcessWorkingSetSize(System.Diagnostics.Process.GetCurrentProcess().Handle, -1, -1);
}
}
#endregion
#region 控制页面元素 Js版本已注释不用
// /// <summary>
// /// 根据ID设置TextBox的value
// /// </summary>
// /// <param name="webkitForm"></param>
// /// <param name="id"></param>
// /// <param name="value"></param>
// public void SetValueByID(string id, string value)
// {
// string strjs = @"
// document.getElementById('{0}').focus();
// document.getElementById('{0}').value = '{1}';";
// EvaluateJScript(strjs, id, value);
// }
// /// <summary>
// /// 根据标签设置Value
// /// </summary>
// /// <param name="webkitForm"></param>
// /// <param name="tagName"></param>
// /// <param name="AttributeName"></param>
// /// <param name="AttributeValue"></param>
// /// <param name="innerText"></param>
// public void SetValueByAttribute(string tagName, string AttributeName, string AttributeValue, string innerText, string value)
// {
// string strjs = @"
// var hes = document.getElementsByTagName('{0}');
// for (var i = 0; i < hes.length; i ) {{
// var he = hes[i];
// if (he['{1}'] == 'undefined')
// continue;
// if (he['{1}'] == null)
// continue;
// if (he.innerText == 'undefined')
// continue;
// if (he.innerText == null)
// continue;
// if (he['{1}'] == '{2}' && he.innerText.indexOf('{3}')>=0) {{
// he.focus();
// he.innerText = '{4}';
// he.focus();
// break;
// }}
// }}
//";
// EvaluateJScript(strjs, tagName, AttributeName, AttributeValue, innerText, value);
// }
// /// <summary>
// /// 根据ID点击按钮
// /// </summary>
// /// <param name="webkitForm"></param>
// /// <param name="id"></param>
// public void ClickByID(string id)
// {
// string strjs = "document.getElementById('{0}').click();";
// EvaluateJScript(strjs, id);
// }
// /// <summary>
// /// 根据标签点击按钮
// /// </summary>
// /// <param name="tagName"></param>
// /// <param name="AttributeName"></param>
// /// <param name="AttributeValue"></param>
// /// <param name="innerText"></param>
// public void ClickByAttribute(string tagName, string AttributeName, string AttributeValue, string innerText)
// {
// string strjs = @"
// var hes = document.getElementsByTagName('{0}');
// for (var i = 0; i < hes.length; i ) {{
// var he = hes[i];
// if (he['{1}'] == 'undefined')
// continue;
// if (he['{1}'] == null)
// continue;
// if (he.innerText == 'undefined')
// continue;
// if (he.innerText == null)
// continue;
// if (he['{1}'] == '{2}' && he.innerText.indexOf('{3}')>=0) {{
// he.click();
// break;
// }}
// }}
//";
// EvaluateJScript(strjs, tagName, AttributeName, AttributeValue, innerText);
// }
// private delegate void DelEvaluateJs(string strJS, params object[] args);
// /// <summary>
// /// 执行js
// /// </summary>
// /// <param name="strJS"></param>
// private void EvaluateJScript(string strJS, params object[] args)
// {
// if (this.InvokeRequired)
// {
// this.BeginInvoke(new DelEvaluateJs(EvaluateJScript), strJS, args);
// }
// else
// {
// try
// {
// if (args.Length > 0)
// strJS = string.Format(strJS, args);
// //新建Html标记
// HtmlElement he = this.Document.CreateElement("script");
// he.SetAttribute("type", "text/javascript");
// he.SetAttribute("text", strJS);
// //将元素嵌入到动态网页中
// this.Document.Body.AppendChild(he);
// }
// catch
// { }
// }
// }
#endregion
#region 控制页面元素
/// <summary>
/// 根据ID设置TextBox的value
/// </summary>
/// <param name="id"></param>
/// <param name="value"></param>
public static void SetValueById(this WebBrowser webBrowser, string id, string value)
{
if (webBrowser.InvokeRequired)
{
IAsyncResult ir = webBrowser.BeginInvoke(new Action(() => SetValueById(webBrowser, id, value)));
webBrowser.EndInvoke(ir);
}
else
{
HtmlDocument doc = webBrowser.Document;
if (doc != null)
{
HtmlElement ele = FindControlById(webBrowser, id, doc.All);
if (ele != null)
{
HTMLInputElement hie = ele.DomElement as HTMLInputElement;
if (hie != null)
{
hie.value = value;
}
}
}
}
}
/// <summary>
/// 根据标签设置Value
/// </summary>
/// <param name="tagName"></param>
/// <param name="AttributeName"></param>
/// <param name="AttributeValue"></param>
/// <param name="innerText"></param>
/// <param name="value"></param>
public static void SetValueByAttribute(this WebBrowser webBrowser, string tagName, string AttributeName, string AttributeValue, string innerText, string value)
{
if (webBrowser.InvokeRequired)
{
IAsyncResult ir = webBrowser.BeginInvoke(new Action(() => SetValueByAttribute(webBrowser, tagName, AttributeName, AttributeValue, innerText, value)));
webBrowser.EndInvoke(ir);
}
else
{
//if (tagName == "textarea")
//{
//HTMLInputTextElement hae = FindControlByAttValue(tagName, AttributeName, AttributeValue, innerText, this.Document.All).DomElement as HTMLInputTextElement;
//hae.value = value;
//}
//else if (tagName == "input")
//{
if (webBrowser.Document != null)
{
HTMLInputElement hie = FindControlByAttValue(webBrowser, tagName, AttributeName, AttributeValue, innerText, webBrowser.Document.All).DomElement as HTMLInputElement;
if (hie != null) hie.value = value;
}
//}
}
}
/// <summary>
/// 根据ID点击按钮
/// </summary>
/// <param name="id"></param>
public static void ClickByID(this WebBrowser webBrowser, string id)
{
if (webBrowser.InvokeRequired)
{
IAsyncResult ir = webBrowser.BeginInvoke(new Action(() => ClickByID(webBrowser, id)));
webBrowser.EndInvoke(ir);
}
else
{
if (webBrowser.Document != null)
{
HTMLInputElement hie = FindControlById(webBrowser, id, webBrowser.Document.All).DomElement as HTMLInputElement;
HTMLAnchorElement hae = FindControlById(webBrowser, id, webBrowser.Document.All).DomElement as HTMLAnchorElement;
if (hie != null)
{
hie.click();
}
else if (hae != null)
{
hae.click();
}
}
}
}
/// <summary>
/// 根据标签点击按钮
/// </summary>
/// <param name="tagName"></param>
/// <param name="AttributeName"></param>
/// <param name="AttributeValue"></param>
/// <param name="innerText"></param>
public static void ClickByAttribute(this WebBrowser web, string tagName, string AttributeName, string AttributeValue, string innerText)
{
if (web.InvokeRequired)
{
IAsyncResult ir = web.BeginInvoke(new Action(() => ClickByAttribute(web, tagName, AttributeName, AttributeValue, innerText)));
web.EndInvoke(ir);
}
else
{
if (tagName.ToLower() == "a")
{
if (web.Document != null)
{
HtmlElement he = FindControlByAttValue(web, tagName, AttributeName, AttributeValue, innerText, web.Document.All);
if (he == null)
{
return;
}
HTMLAnchorElement ae = he.DomElement as HTMLAnchorElement;
if (ae != null) ae.click();
}
//HTMLAnchorElement hae = he.DomElement as HTMLAnchorElement;
//if (hae != null)
//{
// //if (hae.href != null && hae.href.StartsWith("http"))
// //{
// hae.click();
// //}
// //string onclick = Regex.Match(hae.outerHTML, "(?<=<A onclick=). ?(?=title)").Value;
// //this.Document.InvokeScript(onclick);
//}
}
else if (tagName.ToLower() == "input")
{
if (web.Document != null)
{
HtmlElement he = FindControlByAttValue(web, tagName, AttributeName, AttributeValue, innerText,
web.Document.All);
if (he != null)
{
HTMLInputElement hae = he.DomElement as HTMLInputElement;
if (hae != null) hae.click();
}
}
}
}
}
/// <summary>
/// 反回页面元素
/// </summary>
/// <param name="Tag"></param>
/// <param name="AttName"></param>
/// <param name="AttValue"></param>
/// <param name="innerHtml"></param>
/// <param name="listOfHtmlControls"></param>
/// <returns></returns>
public static HtmlElement FindControlByAttValue(this WebBrowser webBrowser, string Tag, string AttName, string AttValue, string innerText, HtmlElementCollection listOfHtmlControls)
{
try
{
foreach (HtmlElement element in listOfHtmlControls)
{
if (!string.IsNullOrEmpty(element.OuterHtml))
{
if (element.TagName.ToLower() == Tag.ToLower())
{
string OuterHtml = element.OuterHtml;
if (OuterHtml == null) continue;
OuterHtml = OuterHtml.Substring(0, OuterHtml.IndexOf(">"));
OuterHtml = OuterHtml.ToLower();
if (OuterHtml.Contains(AttName.ToLower()) && OuterHtml.Contains(AttValue.ToLower()))
{
string e = element.InnerText;
if (e == null) e = "";
if (e.Trim().ToLower().Contains(innerText.ToLower()))
{
return element;
}
}
}
}
}
}
catch (Exception ex)
{
return null;
}
return null;
}
/// <summary>
/// 根据ID反回页面元素
/// </summary>
/// <param name="id"></param>
/// <param name="listOfHtmlControls"></param>
/// <returns></returns>
private static HtmlElement FindControlById(this WebBrowser webBrowser, string id, HtmlElementCollection listOfHtmlControls)
{
if (listOfHtmlControls == null)
{
return null;
}
foreach (HtmlElement element in listOfHtmlControls)
{
if (element.Id == id)
{
return element;
}
}
return null;
}
#endregion
#region UserAgent
private static string defaultUserAgent = null;
[DllImport("urlmon.dll", CharSet = CharSet.Ansi)]
private static extern int UrlMkSetSessionOption(int dwOption, string pBuffer, int dwBufferLength, int dwReserved);
const int URLMON_OPTION_USERAGENT = 0x10000001;
/// <summary>
/// 在默认的UserAgent后面加一部分
/// </summary>
public static void AppendUserAgent(this WebBrowser web, string appendUserAgent)
{
if (web.InvokeRequired)
{
IAsyncResult ir = web.BeginInvoke(new Action(() => AppendUserAgent(web, appendUserAgent)));
web.EndInvoke(ir);
}
else
{
if (string.IsNullOrEmpty(defaultUserAgent))
{
defaultUserAgent = GetDefaultUserAgent();
}
string ua = defaultUserAgent ";" appendUserAgent;
SetUserAgent(web, ua);
}
}
/// <summary>
/// 修改UserAgent
/// </summary>
public static void SetUserAgent(this WebBrowser webBrowser, string userAgent)
{
if (webBrowser.InvokeRequired)
{
IAsyncResult ir = webBrowser.BeginInvoke(new Action(() => SetUserAgent(webBrowser, userAgent)));
webBrowser.EndInvoke(ir);
}
else
{
UrlMkSetSessionOption(URLMON_OPTION_USERAGENT, userAgent, userAgent.Length, 0);
}
}
/// <summary>
/// 一个很BT的获取IE默认UserAgent的方法
/// </summary>
private static string GetDefaultUserAgent()
{
WebBrowser wb = new WebBrowser();
wb.Navigate("about:blank");
while (wb.IsBusy) Application.DoEvents();
object window = wb.Document.Window.DomWindow;
Type wt = window.GetType();
object navigator = wt.InvokeMember("navigator", BindingFlags.GetProperty,
null, window, new object[] { });
Type nt = navigator.GetType();
object userAgent = nt.InvokeMember("userAgent", BindingFlags.GetProperty,
null, navigator, new object[] { });
return userAgent.ToString();
}
#endregion
#region cookie相关
/// <summary>
/// 清除cookie
/// </summary>
public static void ClearCookie(this WebBrowser webBrowser)
{
if (webBrowser.InvokeRequired)
{
IAsyncResult ir = webBrowser.BeginInvoke(new Action(() => ClearCookie(webBrowser)));
webBrowser.EndInvoke(ir);
}
else
{
webBrowser.Navigate("javascript:void((function(){var a,b,c,e,f;f=0;a=document.cookie.split('; ');for(e=0;e<a.length&&a[e];e ){f ;for(b='.' location.host;b;b=b.replace(/^(?:%5C.|[^%5C.] )/,'')){for(c=location.pathname;c;c=c.replace(/.$/,'')){document.cookie=(a[e] '; domain=' b '; path=' c '; expires=' new Date((new Date()).getTime()-1e11).toGMTString());}}}})())");
}
}
#endregion
#region 滚动条
/// <summary>
/// 滚动条
/// </summary>
public static void ScrollTo(this WebBrowser webBrowser1)
{
if (webBrowser1.InvokeRequired)
{
webBrowser1.BeginInvoke(new Action(() => ScrollTo(webBrowser1)));
}
else
{
HtmlDocument document = webBrowser1.Document;
if (document != null && document.Window != null && webBrowser1.Document != null &&
webBrowser1.Document.Body != null)
{
document.Window.ScrollTo(0, webBrowser1.Document.Body.ScrollRectangle.Height);
}
}
}
#endregion
}
}
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