X509Certificate.GetEffectiveDateString Method

Definition

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

C#
public virtual string GetEffectiveDateString();

Returns

The effective date for this X.509 certificate.

Examples

The following example uses the GetEffectiveDateString method to get the effective date of a certificate and displays it to the console.

C#

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.GetEffectiveDateString();

        // Display the value to the console.
        Console.WriteLine(results);
    }
}

Remarks

The effective date is the date after which the X.509 certificate is considered valid.

The GetEffectiveDateString method returns a string that shows the date formatted in Short Date Pattern followed by the time formatted in Long Time Pattern. The date and time are formatted using the current culture and time zone.

Applies to

Product Versions
.NET Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 2.0, 2.1