WinFormプロジェクト開発におけるWebBrowser使用例の概要

この例では、WinFormプロジェクト開発におけるWebBrowserの使い方をまとめています.
1.

[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);
}
}

2.バックグラウンドでJavascriptスクリプトを呼び出す

function ErrorMessage(message) {
  document.getElementById("error").innerText = message;
}

    

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("    ，  :{0}！", ErrorMsg) });
}

3.JavaScriptスクリプト呼び出しバックグラウンドメソッド
スクリプトコード

  

 

          .....
 

   

 
 
 
 
  
 
 
 
  

 
   
   

   
 
バックグラウンドコード

public void DoSvrWebDbBack()
{
  try
  {
  }
  catch (TimeoutException)
  {
 ErrorMsg = "  ，      ！";
  }
  catch (Exception ex)
  {
 ErrorMsg = ex.Message.ToString();
  }
}

  
4.クッキーの  

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);

  
5.  リンク   り  

public class HttpWebRequestToolV2
{
public delegate HttpWebRequest RequestRule(string url);
/// 

///   HttpWebResponse  
/// 
///     
///     
///     『  』，     NULL   ，    ；        HttpWebRequest
/// HttpWebResponse
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;
}

/// 

///       
/// eg:
/// IDictionary _requestCredentials = new Dictionary();
///_requestCredentials.Add("UserName", _userName);
///_requestCredentials.Add("PassWord", _userPwd);
///_requestCredentials.Add("MacAddress", _macAddress);
///byte[] _credentials = HttpWebRequestToolV2.CreateCredentials(_requestCredentials, Encoding.UTF8);
/// 
/// 
public static byte[] CreateCredentials(IDictionary 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 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;//    
  _request.CookieContainer = new CookieContainer();
  return _request;
}

/// 

///   web    
/// 
///    
///    
///   
/// MAC  
///   
///           『  ，             』
public bool ProcessRemoteLogin(string url, string _userName, string _userPwd, string _macAddress, out Cookie sessionID)
{

  bool _checkResult = false;
  string _errorMessage = string.Empty;
  //--------------------      --------------------
  IDictionary _requestCredentials = new Dictionary();
  _requestCredentials.Add("UserName", _userName);
  _requestCredentials.Add("PassWord", _userPwd);
  _requestCredentials.Add("MacAddress", _macAddress);

  byte[] _credentials = HttpWebRequestToolV2.
CreateCredentials

(_requestCredentials, Encoding.UTF8);
  //-----------------------------------------------------

  CookieCollection _cookie = null;
  /*
   *LoginType 1:   0：   
   *Err     
   */
  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    ，     ！";
  }
  if (!string.IsNullOrEmpty(_errorMessage))
 throw new Exception(_errorMessage);
  return _checkResult;
}

  
6.WebBrowserからCookieContainerを  

/// 

///  WebBrowser   CookieContainer
/// 
/// WebBrowser  
/// CookieContainer
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;
}