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X509ServiceCertificateAuthentication.CertificateValidationMode Property

Gets the certificate validation mode.

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

public X509CertificateValidationMode CertificateValidationMode { get; set; }

This enumeration captures the options for determining the validity of the service certificate obtained using SSL/TLS negotiation. For a list of the enumeration members, see X509CertificateValidationMode.

The following code shows how to set this property.


ClientCredentials creds = new ClientCredentials();
// Configure peer trust.
creds.ServiceCertificate.Authentication.CertificateValidationMode =
          X509CertificateValidationMode.PeerTrust;

// Configure chain trust.
creds.ServiceCertificate.Authentication.CertificateValidationMode =
              X509CertificateValidationMode.ChainTrust;

// Configure custom certificate validation.
creds.ServiceCertificate.Authentication.CertificateValidationMode =
              X509CertificateValidationMode.Custom;
creds.ServiceCertificate.Authentication.CustomCertificateValidator =
    new MyCertificateValidator();


The property can also be set in a configuration file.


    <behaviors>
      <endpointBehaviors>
        <behavior name="behave">
          <clientCredentials>
            <serviceCertificate>
              <authentication certificateValidationMode='ChainTrust' />
            </serviceCertificate>
          </clientCredentials>
        </behavior>
      </endpointBehaviors>
    </behaviors>
  </system.serviceModel>
</configuration>


.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.
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