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GetExpirationDateString Method

X509Certificate.GetExpirationDateString Method

Returns the expiration date of this X.509v3 certificate.

[Visual Basic]
Public Overridable Function GetExpirationDateString() As String
public virtual string GetExpirationDateString();
public: virtual String* GetExpirationDateString();
public function GetExpirationDateString() : String;

Return Value

The expiration date for this X.509 certificate.


The expiration date is the date after which the X.509 certificate is no longer considered valid.


[Visual Basic] 
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"
      ' Load the certificate into an X509Certificate object.
      Dim cert As X509Certificate = X509Certificate.CreateFromCertFile(Certificate)
      ' Get the value.
      Dim results As String = cert.GetExpirationDateString()
      ' Display the value to the console.
   End Sub  
End Class 


using System;
using System.Security.Cryptography.X509Certificates;

public class X509

    public static void Main()

        // The path to the certificate.
        string Certificate =  "Certificate.cer";

        // Load the certificate into an X509Certificate object.
        X509Certificate cert = X509Certificate.CreateFromCertFile(Certificate);

        // Get the value.
        string results = cert.GetExpirationDateString();
        // Display the value to the console.



#using <mscorlib.dll>
using namespace System;
using namespace System::Security::Cryptography::X509Certificates;

int main()

    // The path to the certificate.
    String* Certificate =  S"Certificate.cer";

    // Load the certificate into an X509Certificate object.
    X509Certificate* cert = X509Certificate::CreateFromCertFile(Certificate);

    // Get the value.
    String* results = cert->GetExpirationDateString();

    // Display the value to the console.


[JScript] No example is available for JScript. To view a Visual Basic, C#, or C++ example, click the Language Filter button Language Filter in the upper-left corner of the page.


Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, .NET Compact Framework

See Also

X509Certificate Class | X509Certificate Members | System.Security.Cryptography.X509Certificates Namespace

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