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X509Certificate.Equals Method (Object)

Updated: September 2010

Compares two X509Certificate objects for equality.

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

'Declaration
<ComVisibleAttribute(False)> _
Public Overrides Function Equals ( _
	obj As Object _
) As Boolean
'Usage
Dim instance As X509Certificate 
Dim obj As Object 
Dim returnValue As Boolean 

returnValue = instance.Equals(obj)

Parameters

obj
Type: System.Object

An X509Certificate object to compare to the current object.

Return Value

Type: System.Boolean
true if the current X509Certificate object is equal to the object specified by the other parameter; otherwise, false.

Two objects are considered equal if they are X509Certificate objects and they have the same issuer and serial number.

The following example compares two certificates for equality.

Imports System
Imports System.Security.Cryptography.X509Certificates




Public Class X509


   Public Shared Sub Main()

      ' The path to the certificate. 
      Dim Certificate As String = "Certificate.cer" 
      Dim OtherCertificate As String = "OtherCertificate.cer" 

      ' Load the certificate into an X509Certificate object. 
      Dim cert As X509Certificate = X509Certificate.CreateFromCertFile(Certificate)

      ' Load the certificate into an X509Certificate object. 
      Dim certTwo As X509Certificate = X509Certificate.CreateFromCertFile(OtherCertificate)

      ' Get the value. 
      Dim result As Boolean = cert.Equals(certTwo)

      ' Display the value to the console.
      Console.WriteLine(result)
   End Sub   
End Class

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, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC

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

.NET Compact Framework

Supported in: 3.5

Date

History

Reason

September 2010

Added information about how equality is determined.

Customer feedback.

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