X509ChainElement.Information Property

Definition

Namespace:

System.Security.Cryptography.X509Certificates

Assemblies:

netstandard.dll, System.Security.Cryptography.dll

Source:

X509ChainElement.cs

Gets additional error information from an unmanaged certificate chain structure.

C#

public string Information { get; }

Property Value

String

A string representing the pwszExtendedErrorInfo member of the unmanaged CERT_CHAIN_ELEMENT structure in the Crypto API.

Examples

The following code example opens the current user's personal certificate store, allows the user to select a certificate, then writes certificate and certificate chain information to the console. The output depends on the certificate the user selects.

C#

    //Output chain element information.
    Console.WriteLine ("Chain Element Information");
    Console.WriteLine ("Number of chain elements: {0}", ch.ChainElements.Count);
    Console.WriteLine ("Chain elements synchronized? {0} {1}", ch.ChainElements.IsSynchronized, Environment.NewLine);

    foreach (X509ChainElement element in ch.ChainElements)
    {
        Console.WriteLine ("Element issuer name: {0}", element.Certificate.Issuer);
        Console.WriteLine ("Element certificate valid until: {0}", element.Certificate.NotAfter);
        Console.WriteLine ("Element certificate is valid: {0}", element.Certificate.Verify ());
        Console.WriteLine ("Element error status length: {0}", element.ChainElementStatus.Length);
        Console.WriteLine ("Element information: {0}", element.Information);
        Console.WriteLine ("Number of element extensions: {0}{1}", element.Certificate.Extensions.Count, Environment.NewLine);

        if (ch.ChainStatus.Length > 1)
        {
            for (int index = 0; index < element.ChainElementStatus.Length; index++)
            {
                Console.WriteLine (element.ChainElementStatus[index].Status);
                Console.WriteLine (element.ChainElementStatus[index].StatusInformation);
            }
        }
    }
    store.Close();

Remarks

This string is available only on computers with Windows XP Professional or later operating systems. An empty string ("") is returned if the operating system is not Windows XP Professional or later.

Applies to