Single (class) Instances in Multi-tenant Web Application

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;

namespace Testing.Components
{
    public sealed class TryClass
    {
        private static volatile TryClass c;
        private static readonly object sync = new object();

        static TryClass()
        {}

        public string Name
        {
            get;
            set;
        }

        public static TryClass Instance
        {
            get
            {
                if (null == c)
                {
                    lock (sync)
                    {
                        if (null == c)
                        {
                            c = new TryClass();
                        }
                    }
                }

                return c;
            }
        }
    }
}