WindowsClientCredential Class
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WindowsClientCredential Class

Allows you to specify properties related to Windows credentials to be used to represent the client.

Namespace:  System.ServiceModel.Security
Assembly:  System.ServiceModel (in System.ServiceModel.dll)

Public NotInheritable Class WindowsClientCredential
Dim instance As WindowsClientCredential

The WindowsClientCredential enables the setting of Windows client properties used when communicating with a service. The AllowedImpersonationLevel sets the level of impersonation the service can assume when impersonating the client. The ClientCredential enables a client to authenticate with username and password to the service. The AllowNtlm determines whether NTLM can be used to authenticate the client if Kerberos is not used.

The following example creates a client and gets a reference to the WindowsClientCredential. The code then changes the AllowedImpersonationLevel to a new value.

' Create a service host. 
Dim ea As New EndpointAddress("http://localhost/Calculator")
Dim b As New WSHttpBinding(SecurityMode.Message)
b.Security.Message.ClientCredentialType = _

' Create a client. The code is not shown here. See the WCF samples 
' for an example of the CalculatorClient code. 
Dim cc As New CalculatorClient(b, ea)
' Get a reference to the Windows client credential object. 
Dim winCred As WindowsClientCredential = cc.ClientCredentials.Windows
Console.WriteLine("AllowedImpersonationLevel: {0}", _
Console.WriteLine("AllowNtlm: {0}", winCred.AllowNtlm)
Console.WriteLine("Domain: {0}", winCred.ClientCredential.Domain)

' Change the AllowedImpersonationLevel.
winCred.AllowedImpersonationLevel = _

Console.WriteLine("Changed AllowedImpersonationLevel: {0}", _
' Open the calculator and use it. 
' cc.Open() 
' Console.WriteLine(cc.Add(11, 11)) 
' Close the client. 
' cc.Close()


Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

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

.NET Framework

Supported in: 3.5, 3.0

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