WinForm项目开发中WebBrowser用法实例汇总

[PermissionSet(SecurityAction.Demand, Name = "FullTrust")][ComVisibleAttribute(true)]public partial class frmWebData : Form{public frmWebData(){  InitializeComponent();}protected override void OnLoad(EventArgs e){  wbService.ObjectForScripting = this;  base.OnLoad(e);}}

<script type="text/javascript" language="javascript">function ErrorMessage(message) {  document.getElementById("error").innerText = message;}</script>后台代码static string ErrorMsg = string.Empty;private void wbService_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e){  if (!string.IsNullOrEmpty(ErrorMsg)) wbService.Document.InvokeScript("ErrorMessage", new object[1] { string.Format("操作失败，原因:{0}！", ErrorMsg) });}

  <div id="content"> <h2 id="error">   操作正在响应中.....</h2> <div class="utilities">   <a class="button right" onclick="window.external.DoSvrWebDbBack()">

</a>    <!--<a class="button right" onclick="window.external.NavigateToLogin()">重新登录</a>-->   <div class="clear">   </div> </div>  </div>

public void DoSvrWebDbBack(){  try  {  }  catch (TimeoutException)  { ErrorMsg = "超时，请稍候再尝试！";  }  catch (Exception ex)  { ErrorMsg = ex.Message.ToString();  }}

Cookie _cookie = BaseWinForm.LoginMessage.SessionID2;   InternetSetCookie(BaseWinForm.LoginMessage.SvrWebDbBack, "ASP.NET_SessionId", _cookie.Value);   wbService.Navigate(BaseWinForm.LoginMessage.SvrWebDbBack, null, null, string.Format("Referer:{0}", BaseWinForm.LoginMessage.SvrWebDbLoingUrl));[DllImport("wininet.dll", CharSet = CharSet.Auto, SetLastError = true)]public static extern bool InternetSetCookie(string urlName, string cookieName, string cookieData);

public class HttpWebRequestToolV2{public delegate HttpWebRequest RequestRule(string url);/// <summary>/// 发起HttpWebResponse请求/// </summary>/// <param name="url">请求连接</param>/// <param name="credentials">请求参数</param>/// <param name="httpWebRequestRule">请求设置『委托』，当委托等于NULL的时候，默认请求；否则使用所设置的HttpWebRequest</param>/// <returns>HttpWebResponse</returns>public static HttpWebResponse CreateHttpWebRequest(string url, byte[] credentials, RequestRule httpWebRequestRule){  if (string.IsNullOrEmpty(url)) throw new ArgumentNullException("url");  HttpWebRequest _request = null;  if (httpWebRequestRule != null)  { _request = httpWebRequestRule(url);  }  else  { _request = WebRequest.Create(url) as HttpWebRequest; _request.Method = "POST"; _request.ContentType = "application/x-www-form-urlencoded"; _request.CookieContainer = new CookieContainer();  }  if (credentials != null)  { _request.ContentLength = credentials.Length; using (var requestStream = _request.GetRequestStream()) {   requestStream.Write(credentials, 0, credentials.Length); }  }  return _request.GetResponse() as HttpWebResponse;}/// <summary>/// 创建验证凭证/// eg:/// IDictionary<string, string> _requestCredentials = new Dictionary<string, string>();///_requestCredentials.Add("UserName", _userName);///_requestCredentials.Add("PassWord", _userPwd);///_requestCredentials.Add("MacAddress", _macAddress);///byte[] _credentials = HttpWebRequestToolV2.CreateCredentials(_requestCredentials, Encoding.UTF8);/// </summary>/// <returns></returns>public static byte[] CreateCredentials(IDictionary<string, string> credentials, Encoding encoding){  if (credentials == null) throw new ArgumentNullException("credentials");  if (credentials.Count == 0) throw new ArgumentException("credentials");  if (encoding == null) throw new ArgumentNullException("encoding");  StringBuilder _credentials = new StringBuilder();  foreach (KeyValuePair<string, string> credential in credentials)  { _credentials.AppendFormat("{0}={1}&", credential.Key, credential.Value);  }  string _credentialsString = _credentials.ToString().Trim();  int _endIndex = _credentialsString.LastIndexOf('&');  if (_endIndex != -1) _credentialsString = _credentialsString.Substring(0, _endIndex);  return encoding.GetBytes(_credentialsString);}

public static HttpWebRequest RequestSetting(string url){  HttpWebRequest _request = null;  _request = WebRequest.Create(url) as HttpWebRequest;  _request.Method = "POST";  _request.ContentType = "application/x-www-form-urlencoded";  _request.Timeout = 1000 * 10;//超时五秒  _request.CookieContainer = new CookieContainer();  return _request;}/// <summary>/// 登录web网页验证/// </summary>/// <param name="url">超链接</param>/// <param name="_userName">用户名</param>/// <param name="_userPwd">密码</param>/// <param name="_macAddress">MAC地址</param>/// <param name="sessionID">会话</param>/// <returns>网页登录验证是否成功『失败，将抛出网页验证验证失败信息』</returns>public bool ProcessRemoteLogin(string url, string _userName, string _userPwd, string _macAddress, out Cookie sessionID){  bool _checkResult = false;  string _errorMessage = string.Empty;  //--------------------创建登录凭证--------------------  IDictionary<string, string> _requestCredentials = new Dictionary<string, string>();  _requestCredentials.Add("UserName", _userName);  _requestCredentials.Add("PassWord", _userPwd);  _requestCredentials.Add("MacAddress", _macAddress);  byte[] _credentials = HttpWebRequestToolV2.CreateCredentials(_requestCredentials, Encoding.UTF8);  //-----------------------------------------------------  CookieCollection _cookie = null;  /*   *LoginType 1:成功 0：失败    *Err 失败原因   */  using (HttpWebResponse _httpRespone = HttpWebRequestToolV2.CreateHttpWebRequest(url, _credentials, RequestSetting))  { _cookie = new CookieCollection(); if (_httpRespone.Cookies.Count > 0)   _cookie.Add(_httpRespone.Cookies);  }  //-------------------------------------------------------  Cookie _loginType = _cookie["LoginType"];  sessionID = _cookie["ASP.NET_SessionId"];  Cookie _err = _cookie["Err"];  if (_loginType != null && _err != null && sessionID != null)  { _checkResult = _loginType.Value.Equals("1"); if (!_checkResult)   _errorMessage = HttpUtility.UrlDecode(_err.Value);  }  else  { _errorMessage = "Web服务异常，请稍候在试！";  }  if (!string.IsNullOrEmpty(_errorMessage)) throw new Exception(_errorMessage);  return _checkResult;}

/// <summary>/// 从WebBrowser中获取CookieContainer/// </summary>/// <param name="webBrowser">WebBrowser对象</param>/// <returns>CookieContainer</returns>public static CookieContainer GetCookieContainer(this WebBrowser webBrowser){  if (webBrowser == null) throw new ArgumentNullException("webBrowser");  CookieContainer _cookieContainer = new CookieContainer();  string _cookieString = webBrowser.Document.Cookie;  if (string.IsNullOrEmpty(_cookieString)) return _cookieContainer;  string[] _cookies = _cookieString.Split(';');  if (_cookies == null) return _cookieContainer;  foreach (string cookieString in _cookies)  { string[] _cookieNameValue = cookieString.Split('='); if (_cookieNameValue.Length != 2) continue; Cookie _cookie = new Cookie(_cookieNameValue[0].Trim().ToString(), _cookieNameValue[1].Trim().ToString()); _cookieContainer.Add(_cookie);  }  return _cookieContainer;}