private static void AssertEquals(AsnEncodedDataCollection c, IList <AsnEncodedData> expected)
{
Assert.Equal(expected.Count, c.Count);
for (int i = 0; i < c.Count; i++)
{
Assert.Equal(expected[i], c[i]);
}
int index = 0;
foreach (AsnEncodedData a in c)
{
Assert.Equal(expected[index++], a);
}
Assert.Equal(c.Count, index);
ValidateEnumerator(c.GetEnumerator(), expected);
ValidateEnumerator(((ICollection)c).GetEnumerator(), expected);
AsnEncodedData[] dumped = new AsnEncodedData[c.Count + 3];
c.CopyTo(dumped, 2);
Assert.Null(dumped[0]);
Assert.Null(dumped[1]);
Assert.Null(dumped[dumped.Length - 1]);
Assert.Equal <AsnEncodedData>(expected, dumped.Skip(2).Take(c.Count));
}
private static void AssertEquals(AsnEncodedDataCollection c, IList<AsnEncodedData> expected)
{
Assert.Equal(expected.Count, c.Count);
for (int i = 0; i < c.Count; i++)
{
Assert.Equal(expected[i], c[i]);
}
int index = 0;
foreach (AsnEncodedData a in c)
{
Assert.Equal(expected[index++], a);
}
Assert.Equal(c.Count, index);
ValidateEnumerator(c.GetEnumerator(), expected);
ValidateEnumerator(((ICollection)c).GetEnumerator(), expected);
AsnEncodedData[] dumped = new AsnEncodedData[c.Count + 3];
c.CopyTo(dumped, 2);
Assert.Equal(null, dumped[0]);
Assert.Equal(null, dumped[1]);
Assert.Equal(null, dumped[dumped.Length - 1]);
Assert.Equal<AsnEncodedData>(expected, dumped.Skip(2).Take(c.Count));
}
static void Main()
{
//The following example demonstrates the usage the AsnEncodedData classes.
// Asn encoded data is read from the extensions of an X509 certificate.
try
{
// Open the certificate store.
X509Store store = new X509Store("MY", StoreLocation.CurrentUser);
store.Open(OpenFlags.ReadOnly | OpenFlags.OpenExistingOnly);
X509Certificate2Collection collection = (X509Certificate2Collection)store.Certificates;
X509Certificate2Collection fcollection = (X509Certificate2Collection)collection.Find(X509FindType.FindByTimeValid, DateTime.Now, false);
// Select one or more certificates to display extensions information.
X509Certificate2Collection scollection = X509Certificate2UI.SelectFromCollection(fcollection, "Certificate Select", "Select certificates from the following list to get extension information on that certificate", X509SelectionFlag.MultiSelection);
// Create a new AsnEncodedDataCollection object.
AsnEncodedDataCollection asncoll = new AsnEncodedDataCollection();
for (int i = 0; i < scollection.Count; i++)
{
// Display certificate information.
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("Certificate name: {0}", scollection[i].GetName());
Console.ResetColor();
// Display extensions information.
foreach (X509Extension extension in scollection[i].Extensions)
{
// Create an AsnEncodedData object using the extensions information.
AsnEncodedData asndata = new AsnEncodedData(extension.Oid, extension.RawData);
Console.ForegroundColor = ConsoleColor.Green;
Console.WriteLine("Extension type: {0}", extension.Oid.FriendlyName);
Console.WriteLine("Oid value: {0}", asndata.Oid.Value);
Console.WriteLine("Raw data length: {0} {1}", asndata.RawData.Length, Environment.NewLine);
Console.ResetColor();
Console.WriteLine(asndata.Format(true));
Console.WriteLine(Environment.NewLine);
// Add the AsnEncodedData object to the AsnEncodedDataCollection object.
asncoll.Add(asndata);
}
Console.WriteLine(Environment.NewLine);
}
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("Number of AsnEncodedData items in the collection: {0} {1}", asncoll.Count, Environment.NewLine);
Console.ResetColor();
store.Close();
//Create an enumerator for moving through the collection.
AsnEncodedDataEnumerator asne = asncoll.GetEnumerator();
//You must execute a MoveNext() to get to the first item in the collection.
asne.MoveNext();
// Write out AsnEncodedData in the collection.
Console.ForegroundColor = ConsoleColor.Blue;
Console.WriteLine("First AsnEncodedData in the collection: {0}", asne.Current.Format(true));
Console.ResetColor();
asne.MoveNext();
Console.ForegroundColor = ConsoleColor.DarkBlue;
Console.WriteLine("Second AsnEncodedData in the collection: {0}", asne.Current.Format(true));
Console.ResetColor();
//Return index in the collection to the beginning.
asne.Reset();
}
catch (CryptographicException)
{
Console.WriteLine("Information could not be written out for this certificate.");
}
}
