CredentialCache.GetEnumerator メソッドとは何？わかりやすく解説 Weblio辞書

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.NET Framework クラスライブラリリファレンス

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CredentialCache.GetEnumerator メソッド

CredentialCache インスタンスを反復処理できる列挙子を返します。

名前空間: System.Net
アセンブリ: System (system.dll 内)
構文

Visual Basic (宣言)

Public Function GetEnumerator As
 IEnumerator

Visual Basic (使用法)

Dim instance As CredentialCache
Dim returnValue As IEnumerator

returnValue = instance.GetEnumerator

public IEnumerator GetEnumerator ()

C++

public:
virtual IEnumerator^ GetEnumerator () sealed

public final IEnumerator GetEnumerator ()

JScript

public final function GetEnumerator () : IEnumerator

戻り値
CredentialCache の IEnumerator。

使用例

GetEnumerator メソッドを使用して、CredentialCache インスタンスを反復処理できる列挙子を返すコード例を次に示します。

Visual Basic

    Try
        Dim myCredentialCache As New
 CredentialCache
        ' Dummy Credentials used here.             
        myCredentialCache.Add(New Uri("http://microsoft.com/"),
 "Basic", New NetworkCredential("user1",
 "passwd1", "domain1"))
        myCredentialCache.Add(New Uri("http://msdn.com/"),
 "Basic", New NetworkCredential("user2",
 "passwd2", "domain2"))

        myCredentialCache.Add(New Uri(url), "Basic",
 New NetworkCredential(userName, password, domainName))
        Dim myWebRequest As WebRequest = WebRequest.Create(url)
 'Creates a webrequest with the specified url 
        myWebRequest.Credentials = myCredentialCache
        Dim listCredentials As IEnumerator
 = myCredentialCache.GetEnumerator()
        Console.WriteLine("Displaying credentials stored in CredentialCache:
 ")
        While listCredentials.MoveNext()
            Display(CType(listCredentials.Current, NetworkCredential))
        End While
        Console.WriteLine(ControlChars.Cr + "Now Displaying using 'foreach':
 ")
        ' Can use foreach with CredentialCache(Since GetEnumerator method
 of IEnumerable has been implemented by 'CredentialCache' class.
        Dim credential As NetworkCredential
        For Each credential In
 myCredentialCache
            Display(credential)
        Next credential
        Dim myWebResponse As WebResponse =
 myWebRequest.GetResponse() 'Sends the request and waits for response.
        ' Process the response here
        Console.WriteLine(ControlChars.Cr + "Response Received.")
        myWebResponse.Close()

    Catch e As WebException
        If Not (e.Response Is
 Nothing) Then
            Console.WriteLine(ControlChars.Lf + ControlChars.Cr + "Failed
 to obtain a response. The following error occured : {0}", CType(e.Response,
 HttpWebResponse).StatusDescription)
        Else
            Console.WriteLine(ControlChars.Lf + ControlChars.Cr + "Failed
 to obtain a response. The following error occured : {0}", e.Status)
        End If
    Catch e As Exception
        Console.WriteLine(ControlChars.Cr + "The following exception
 was raised : {0}", e.Message)
    End Try

End Sub 'GetPage

Public Shared Sub Display(credential
 As NetworkCredential)
    Console.WriteLine(ControlChars.Cr + "Username : {0} ,Password
 : {1} ,Domain : {2}", credential.UserName, credential.Password, credential.Domain)
End Sub 'Display

 public static void GetPage(string
 url,string userName,string password,string
 domainName)
   {
      try 
      {
          CredentialCache myCredentialCache = new CredentialCache();
          // Dummy Credentials used here.             
          myCredentialCache.Add(new Uri("http://microsoft.com/"),"Basic",
 new NetworkCredential("user1","passwd1","domain1"));
          myCredentialCache.Add(new Uri("http://msdn.com/"),"Basic",
 new NetworkCredential("user2","passwd2","domain2"));

          myCredentialCache.Add(new Uri(url),"Basic",
 new NetworkCredential(userName,password,domainName));    
          // Creates a webrequest with the specified url.          
       
          WebRequest myWebRequest = WebRequest.Create(url);
          myWebRequest.Credentials = myCredentialCache;            
          IEnumerator listCredentials = myCredentialCache.GetEnumerator();
          
          Console.WriteLine("\nDisplaying credentials stored in
 CredentialCache: ");
          while(listCredentials.MoveNext())
          {
              Display((NetworkCredential)listCredentials.Current);
          }
          Console.WriteLine("\nNow Displaying the same using
 'foreach' : ");
          // Can use foreach with CredentialCache(Since GetEnumerator
 function of IEnumerable has been implemented by 'CredentialCache' class.
          foreach(NetworkCredential credential in
 myCredentialCache)
              Display(credential);
          // Send the request and waits for response.
       WebResponse myWebResponse = myWebRequest.GetResponse(); 
          
         // Process response here.
          
         Console.WriteLine("\nResponse Received.");
          myWebResponse.Close();
                                
      } 
      catch(WebException e) 
      {
          if (e.Response != null)
              Console.WriteLine("\r\nFailed to obtain a response. The following
 error occured : {0}",((HttpWebResponse)(e.Response)).StatusDescription); 
          else
              Console.WriteLine("\r\nFailed to obtain a response. The following
 error occured : {0}",e.Status); 
      }
      catch(Exception e)
      {
          Console.WriteLine("\nThe following exception was raised : {0}"
,e.Message);
      }
}
public static void Display(NetworkCredential
 credential)
{
  Console.WriteLine("\n\tUsername : {0} ,Password : {1} ,Domain : {2}"
,credential.UserName,credential.Password,credential.Domain);
}

C++

void Display( NetworkCredential^ credential )
{
   Console::WriteLine( "\n\tUsername : {0} , Password : {1} , Domain : {2}",
 credential->UserName, credential->Password, credential->Domain );
}

void GetPage( String^ url, String^ userName, String^ password,
 String^ domainName )
{
   try
   {
      CredentialCache^ myCredentialCache = gcnew CredentialCache;

      // Dummy Credentials used here.
      myCredentialCache->Add( gcnew Uri( "http://microsoft.com/"
 ), "Basic", gcnew NetworkCredential( "user1","passwd1","domain1"
 ) );
      myCredentialCache->Add( gcnew Uri( "http://msdn.com/"
 ), "Basic", gcnew NetworkCredential( "user2","passwd2","domain2"
 ) );
      myCredentialCache->Add( gcnew Uri( url ), "Basic", gcnew NetworkCredential(
 userName,password,domainName ) );

      // Creates a webrequest with the specified url.
      WebRequest^ myWebRequest = WebRequest::Create( url );
      myWebRequest->Credentials = myCredentialCache;
      IEnumerator^ listCredentials = myCredentialCache->GetEnumerator();
      Console::WriteLine( "\nDisplaying credentials stored in
 CredentialCache: " );
      while ( listCredentials->MoveNext() )
            Display( dynamic_cast<NetworkCredential^>(listCredentials->Current)
 );
      Console::WriteLine( "\nNow Displaying the same using
 'foreach' : " );

      // Can use foreach with CredentialCache(Since GetEnumerator function
 of IEnumerable* has been implemented by 'CredentialCache' class.
      IEnumerator^ myEnum = myCredentialCache->GetEnumerator();
      while ( myEnum->MoveNext() )
      {
         NetworkCredential^ credential = safe_cast<NetworkCredential^>(myEnum->Current);
         Display( credential );
      }
      WebResponse^ myWebResponse = myWebRequest->GetResponse();

      // Process response here.
      Console::WriteLine( "\nResponse Received." );
      myWebResponse->Close();
   }
   catch ( WebException^ e ) 
   {
      if ( e->Response != nullptr )
            Console::WriteLine( "\r\nFailed to obtain a response. The following
 error occured : {0}", (dynamic_cast<HttpWebResponse^>(e->Response))->StatusDescription
 );
      else
            Console::WriteLine( "\r\nFailed to obtain a response. The following
 error occured : {0}", e->Status );
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( "\nThe following exception was raised : {0}",
 e->Message );
   }
}

public static void GetPage(String
 url, String userName, String password, 
    String domainName)
{
    try {
        CredentialCache myCredentialCache = new CredentialCache();

        // Dummy Credentials used here.             
        myCredentialCache.Add(new Uri("http://microsoft.com/"),
 "Basic", 
            new NetworkCredential("user1", "passwd1",
 "domain1"));
        myCredentialCache.Add(new Uri("http://msdn.com/"),
 "Basic", 
            new NetworkCredential("user2", "passwd2",
 "domain2"));
        myCredentialCache.Add(new Uri(url), "Basic",
 
            new NetworkCredential(userName, password, domainName));

        // Creates a webrequest with the specified url.            
     
        WebRequest myWebRequest = WebRequest.Create(url);
        myWebRequest.set_Credentials(myCredentialCache);
        IEnumerator listCredentials = myCredentialCache.GetEnumerator();
        Console.WriteLine("\nDisplaying credentials stored in
 "
            + "CredentialCache: ");
        while (listCredentials.MoveNext()) {
            Display((NetworkCredential)listCredentials.get_Current());
        }
        Console.WriteLine("\nNow Displaying the same using
 'foreach' : ");
        IEnumerator myEnumerator = myCredentialCache.GetEnumerator();
        while (myEnumerator.MoveNext()) {
            NetworkCredential credential = (NetworkCredential)myEnumerator.
                get_Current();

            // Can use foreach with CredentialCache(Since GetEnumerator
 
            // function of IEnumerable has been implemented by 
            // 'CredentialCache' class.
            Display(credential);
        }

        // Send the request and waits for response.
        WebResponse myWebResponse = myWebRequest.GetResponse();

        // Process response here.
        Console.WriteLine("\nResponse Received.");
        myWebResponse.Close();
    }
    catch (WebException e) {
        if (e.get_Response() != null) {
            Console.WriteLine("\r\nFailed to obtain a response. "
                + "The following error occured : {0}", 
                ((HttpWebResponse)e.get_Response()).get_StatusDescription());
        }
        else {
            Console.WriteLine("\r\nFailed to obtain a response. "
                + "The following error occured : {0}", e.get_Status());
        }
    }
    catch (System.Exception e) {
        Console.WriteLine("\nThe following exception was raised : {0}",
 
            e.get_Message());
    }
} //GetPage

public static void Display(NetworkCredential
 credential)
{
    Console.WriteLine("\n\tUsername : {0} ,Password : {1} ,Domain : {2}",
 
        credential.get_UserName(), credential.get_Password(), credential.
        get_Domain());
} //Display

プラットフォーム

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。

バージョン情報

.NET Framework
サポート対象 : 2.0、1.1、1.0
.NET Compact Framework
サポート対象 : 2.0

参照

関連項目
CredentialCache クラス
CredentialCache メンバ
System.Net 名前空間

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CredentialCache.GetEnumerator メソッドとは？ わかりやすく解説

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CredentialCache.GetEnumerator メソッドとは？わかりやすく解説