OidCollection Class

using System;
using System.Security.Cryptography;
public class OidSample
{
	public static void Main()
	{
		// Assign values to strings.
		string Value1 = "1.2.840.113549.1.1.1";
		string Name1 = "3DES";
		string Value2 = "1.3.6.1.4.1.311.20.2";
		string InvalidName = "This name is not a valid name";
		string InvalidValue = "1.1.1.1.1.1.1.1";

		// Create new Oid objects using the specified values.
		// Note that the corresponding Value or Friendly Name property is automatically added to the object.
		Oid o1 = new Oid(Value1);
		Oid o2 = new Oid(Name1);

		// Create a new Oid object using the specified Value and Friendly Name properties.
		// Note that the two are not compared to determine if the Value is associated 
		//  with the Friendly Name.
		Oid o3 = new Oid(Value2, InvalidName);

		//Create a new Oid object using the specified Value. Note that if the value
		//  is invalid or not known, no value is assigned to the Friendly Name property.
		Oid o4 = new Oid(InvalidValue);

		//Write out the property information of the Oid objects.
		Console.WriteLine("Oid1: Automatically assigned Friendly Name: {0}, {1}", o1.FriendlyName, o1.Value);
		Console.WriteLine("Oid2: Automatically assigned Value: {0}, {1}", o2.FriendlyName, o2.Value);
		Console.WriteLine("Oid3: Name and Value not compared: {0}, {1}", o3.FriendlyName, o3.Value);
		Console.WriteLine("Oid4: Invalid Value used: {0}, {1} {2}", o4.FriendlyName, o4.Value, Environment.NewLine);

		//Create an Oid collection and add several Oid objects.
		OidCollection oc = new OidCollection();
		oc.Add(o1);
		oc.Add(o2);
		oc.Add(o3);
		Console.WriteLine("Number of Oids in the collection: {0}", oc.Count);
		Console.WriteLine("Is synchronized: {0} {1}", oc.IsSynchronized, Environment.NewLine);

		//Create an enumerator for moving through the collection.
		OidEnumerator oe = oc.GetEnumerator();
		//You must execute a MoveNext() to get to the first item in the collection.
		oe.MoveNext();
		// Write out Oids in the collection.
		Console.WriteLine("First Oid in collection: {0},{1}", oe.Current.FriendlyName,oe.Current.Value);
		oe.MoveNext();
		Console.WriteLine("Second Oid in collection: {0},{1}", oe.Current.FriendlyName, oe.Current.Value);
		//Return index in the collection to the beginning.
		oe.Reset();
	}
}