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CredentialCache.GetEnumerator Method

Returns an enumerator that can iterate through the CredentialCache instance.

Namespace:  System.Net
Assembly:  System (in System.dll)

public IEnumerator GetEnumerator()

Implements

IEnumerable.GetEnumerator()

The following code example uses the GetEnumerator method to return an enumerator that can iterate through the CredentialCache instance.

 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);
}

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8
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