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X509ServiceCertificateAuthentication.CertificateValidationMode Property

Gets or sets the certificate validation mode.

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

'Declaration
Public Property CertificateValidationMode As X509CertificateValidationMode

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.

				Dim creds As 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: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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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