If the virtual directory does not require authentication, this property does not need to be set. Otherwise, the credentials of the user must be supplied.

Different credentials can be associated with different URIs and added to a credential cache. The credentials can then be used to check authentication for different URIs, regardless of the original source of the XML.

The following C# code shows how to set the Credentials property to a credential cache.

NetworkCredential myCred = new NetworkCredential(UserName,SecurelyStoredPassword,Domain); 
CredentialCache myCache = new CredentialCache(); 
myCache.Add(new Uri("http://www.contoso.com/"), "Basic", myCred); 
myCache.Add(new Uri("http://app.contoso.com/"), "Basic", myCred);
XmlUrlResolver resolver = new XmlUrlResolver();
resolver.Credentials = myCache;

The following example creates an XmlUrlResolver object with credentials. The XmlReader uses the credentials on the XmlUrlResolver object to access a network resource.

' Create a resolver and specify the necessary credentials.
Dim resolver As New XmlUrlResolver()
Dim myCred As System.Net.NetworkCredential
myCred = New System.Net.NetworkCredential(UserName, SecurelyStoredPassword, Domain)
resolver.Credentials = myCred

// Create a resolver and specify the necessary credentials.
XmlUrlResolver resolver = new XmlUrlResolver();
System.Net.NetworkCredential myCred;
myCred  = new System.Net.NetworkCredential(UserName,SecurelyStoredPassword,Domain);  
resolver.Credentials = myCred;

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

.NET Framework

.NET Compact Framework

XNA Framework

Reference