//静态构造函数的单例模式
public sealed class Singleton
{
private static readonly Singleton _instance = new Singleton();
static Singleton()
{
}
private Singleton()
{
}
public static Singleton Instance
{
get
{
return _instance;
}
}
}
//延迟构造对象的单例模式
/// <summary>
/// 在.Net4.0或以上版本才行
/// </summary>
public sealed class Singleton
{
private static readonly Lazy<Singleton> lazy =
new Lazy<Singleton>(() => new Singleton());
public static Singleton Instance { get { return lazy.Value; } }
private Singleton()
{
}
}
原文：http://www.cnblogs.com/zzq-include/p/4309186.html