CredentialCache.Add Method (Uri, String, NetworkCredential)

Adds a NetworkCredential instance to the credential cache and associates it with a Uniform Resource Identifier (URI) prefix and authentication protocol.

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

void Add (
	Uri^ uriPrefix, 
	String^ authType, 
	NetworkCredential^ cred
public void Add (
	Uri uriPrefix, 
	String authType, 
	NetworkCredential cred
public function Add (
	uriPrefix : Uri, 
	authType : String, 
	cred : NetworkCredential



A Uri that specifies the URI prefix of the resources that the credential grants access to.


The authentication scheme used by the resource named in uriPrefix.


The NetworkCredential to add to the credential cache.

Exception typeCondition


uriPrefix is a null reference (Nothing in Visual Basic).


authType is a null reference (Nothing in Visual Basic).


The same credentials are added more than once.

The Add method places a NetworkCredential instance into the CredentialCache. The cache stores credentials in the order in which they are added to it. When the GetCredential(Uri,String) method is called, it returns the proper matching NetworkCredential instance.

The following code example initializes a CredentialCache with multiple security credentials and uses those credentials with a WebRequest.

CredentialCache^ myCache = gcnew CredentialCache;

myCache->Add( gcnew Uri( "" ), "Basic", gcnew NetworkCredential( UserName,SecurelyStoredPassword ) );
myCache->Add( gcnew Uri( "" ), "Digest", gcnew NetworkCredential( UserName,SecurelyStoredPassword,Domain ) );

wReq->Credentials = myCache;

CredentialCache myCache = new CredentialCache();
myCache.Add(new Uri(""), "Basic", 
    new NetworkCredential(userName, securelyStoredPassword));
myCache.Add(new Uri(""), "Digest", 
    new NetworkCredential(userName, securelyStoredPassword, domain)); 

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

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

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0