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X509Certificate.Export Method (X509ContentType, SecureString)

Exports the current X509Certificate object to a byte array using the specified format and a password.

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

public function Export(
	contentType : X509ContentType, 
	password : SecureString
) : byte[]


Type: System.Security.Cryptography.X509Certificates.X509ContentType

One of the X509ContentType values that describes how to format the output data.

Type: System.Security.SecureString

The password required to access the X.509 certificate data.

Return Value

Type: System.Byte[]
A byte array that represents the current X509Certificate object.


A value other than Cert, SerializedCert, or Pkcs12 was passed to the contentType parameter.


The certificate could not be exported.

The contentType parameter accepts only the following values of the X509ContentType enumeration: Cert, SerializedCert, and Pkcs12. Passing any other value causes a CryptographicException to be thrown.

Security noteSecurity Note:

Never hard code a password within your source code. Hard-coded passwords can be retrieved from an assembly using the MSIL Disassembler (Ildasm.exe), a hex editor, or by simply opening the assembly in a text editor such as Notepad.exe.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

.NET Framework

Supported in: 3.5, 3.0, 2.0