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FtpWebRequest.ClientCertificates Property

Gets or sets the certificates used for establishing an encrypted connection to the FTP server.

Namespace:  System.Net
Assembly:  System (in System.dll)

public X509CertificateCollection ClientCertificates { get; set; }

Property Value

Type: System.Security.Cryptography.X509Certificates.X509CertificateCollection
An X509CertificateCollection object that contains the client certificates.

ExceptionCondition
ArgumentNullException

The value specified for a set operation is null.

Client certificates are used to authenticate the client during the initial SSL connection negotiation. For more information, see EnableSsl.

NoteNote

The .NET Framework caches SSL sessions as they are created and attempts to reuse a cached session for a new request, if possible. When attempting to reuse an SSL session, the .NET Framework uses the first element of ClientCertificates (if there is one), or tries to reuse an anonymous session if ClientCertificates is empty.

Windows 95, Windows 98, Windows 98 Second Edition, Windows Millennium Edition Platform Note: The .NET Framework attempts to reuse an SSL session only if a client certificate is not required.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0

.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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