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X509Certificate2.Import Method (String)

Populates an X509Certificate2 object with information from a certificate file.

Namespace:  System.Security.Cryptography.X509Certificates
Assembly:  System (in System.dll)

'Declaration
<PermissionSetAttribute(SecurityAction.LinkDemand, Unrestricted := True)> _
<PermissionSetAttribute(SecurityAction.InheritanceDemand, Unrestricted := True)> _
Public Overrides Sub Import ( _
	fileName As String _
)

Parameters

fileName
Type: System.String

The name of a certificate.

This method uses a certificate file, such as a file with a .cer extension, that represents an X.509 certificate and populates the X509Certificate2 object with the certificate the file contains.

This method can be used with several certificate types, including Base64-encoded or DER-encoded X.509 certificates, PFX/PKCS12 certificates, and signer certificates such as Authenticode. Note that a PFX/PKCS12 certificate can contain more than one certificate. In that case, the first certificate associated with a private key is used or, if no private key is found, the first certificate is used.

.NET Framework

Supported in: 4.6, 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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