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CredentialCache.GetEnumerator Method

Returns an enumerator that can iterate through the CredentialCache instance.

Namespace:  System.Net
Assemblies:   System (in System.dll)
  System.Net.Primitives (in System.Net.Primitives.dll)

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

         // Process response here.

         Console.WriteLine("\nResponse Received.");

      catch(WebException e) 
          if (e.Response != null)
              Console.WriteLine("\r\nFailed to obtain a response. The following error occured : {0}",((HttpWebResponse)(e.Response)).StatusDescription); 
              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, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

.NET for Windows Store apps

Supported in: Windows 8

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8

Windows Phone 8.1, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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