.NET API Reference

Example

The following code example demonstrates how to retrieve and display the issuer name of an X.509 certificate.

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

public class CertificateIssuerExample
{
    public static void Main(string[] args)
    {
        try
        {
            // Load a certificate from the CurrentUser/My store
            X509Store store = new X509Store(StoreName.My, StoreLocation.CurrentUser);
            store.Open(OpenFlags.ReadOnly);

            if (store.Certificates.Count > 0)
            {
                // Take the first certificate for demonstration
                X509Certificate2 certificate = store.Certificates[0];

                Console.WriteLine($"Certificate Subject: {certificate.Subject}");
                Console.WriteLine($"Certificate Issuer:  {certificate.Issuer}");
                Console.WriteLine($"Certificate Thumbprint: {certificate.Thumbprint}");
            }
            else
            {
                Console.WriteLine("No certificates found in the CurrentUser/My store.");
            }

            store.Close();
        }
        catch (Exception ex)
        {
            Console.WriteLine($"An error occurred: {ex.Message}");
        }
    }
}