Add Method (Uri, String, NetworkCredential)

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)

public void Add(
	Uri uriPrefix,
	string authType,
	NetworkCredential cred


Type: System.Uri

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

Type: System.String

The authentication scheme used by the resource named in uriPrefix.

Type: System.Net.NetworkCredential

The NetworkCredential to add to the credential cache.

Exception Condition

uriPrefix is null.


authType is null.


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.

CredentialCache myCache = new CredentialCache();

myCache.Add(new Uri(""),"Basic",new NetworkCredential(UserName,SecurelyStoredPassword));
myCache.Add(new Uri(""),"Digest", new NetworkCredential(UserName,SecurelyStoredPassword,Domain));

wReq.Credentials = myCache;

Universal Windows Platform
Available since 4.5
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Windows Phone Silverlight
Available since 8.1
Windows Phone
Available since 8.1
Return to top
© 2015 Microsoft