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X509CertificateInitiatorClientCredential.SetCertificate Method (StoreLocation, StoreName, X509FindType, Object)

Allows you to specify the certificate to use to represent the client by specifying query parameters such as storeLocation, storeName, findType and findValue.

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

public void SetCertificate(
	StoreLocation storeLocation,
	StoreName storeName,
	X509FindType findType,
	Object findValue


Type: System.Security.Cryptography.X509Certificates.StoreLocation
The location of the certificate store the client uses to obtain the client certificate.
Type: System.Security.Cryptography.X509Certificates.StoreName
Specifies the name of the X.509 certificate store to open.
Type: System.Security.Cryptography.X509Certificates.X509FindType
Defines the type of X.509 search to be executed.
Type: System.Object
The value to search for in the X.509 certificate store.

Values for storeLocation are included in the StoreLocation enumeration:

  • LocalMachine: the certificate store assigned to the local machine (default).

  • CurrentUser: the certificate store used by the current user.

If the client application is running under a system account, then the certificate is typically in LocalMachine. If the client application is running under a user account, then the certificate is typically in CurrentUser.

Values for storeName are included in the StoreName enumeration.

Values for findType are included in the X509FindType enumeration.

The most commonly used enumeration is FindBySubjectName, which does a case-insensitive search on the subject name of certificates in the specified store. This can be an imprecise search. If more than one certificate is returned then the first one matching the find is used to represent the client.

The following code specifies the certificate to use.

// Create a WSHttpBinding and set its security properties. The
// security mode is Message, and the client is authenticated with 
// a certificate.
EndpointAddress ea = new EndpointAddress("");
WSHttpBinding b = new WSHttpBinding();
b.Security.Mode = SecurityMode.Message;
b.Security.Message.ClientCredentialType =

// Create the client with the binding and EndpointAddress.
CalculatorClient cc = new CalculatorClient(b, ea);

// Set the client credential value to a valid certificate.

.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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