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CredentialCache.Add Method (Uri, String, NetworkCredential)

Adds a NetworkCredential instance to the credential cache for use with protocols other than SMTP and associates it with a Uniform Resource Identifier (URI) prefix and authentication protocol.

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

'Declaration
Public Sub Add ( _
	uriPrefix As Uri, _
	authType As String, _
	cred As NetworkCredential _
)
'Usage
Dim instance As CredentialCache
Dim uriPrefix As Uri
Dim authType As String
Dim cred As NetworkCredential

instance.Add(uriPrefix, authType, cred)
public void Add (
	Uri uriPrefix, 
	String authType, 
	NetworkCredential cred
)
public function Add (
	uriPrefix : Uri, 
	authType : String, 
	cred : NetworkCredential
)
Not applicable.

Parameters

uriPrefix

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

authType

The authentication scheme used by the resource named in uriPrefix.

cred

The NetworkCredential to add to the credential cache.

Exception typeCondition

ArgumentNullException

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

-or-

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

ArgumentException

The same credentials are added more than once.

The Add method places a NetworkCredential instance for use with protocols other than SMTP 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.

Dim myCache As New CredentialCache()

myCache.Add(New Uri("http://www.contoso.com/"), "Basic", New NetworkCredential(UserName, SecurelyStoredPassword))
myCache.Add(New Uri("http://www.contoso.com/"), "Digest", New NetworkCredential(UserName, SecurelyStoredPassword, Domain))

wReq.Credentials = myCache

CredentialCache myCache = new CredentialCache();
myCache.Add(new Uri("http://www.contoso.com/"), "Basic", 
    new NetworkCredential(userName, securelyStoredPassword));
myCache.Add(new Uri("http://www.contoso.com/"), "Digest", 
    new NetworkCredential(userName, securelyStoredPassword, domain)); 
wReq.set_Credentials(myCache);

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0

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