【設計模式】單例模式

一、前言

      保證一個類僅有一個實例，並提供一個該實例的全局訪問點。

二、代碼

public class ApplicationServices
{
        public static readonly Lazy<ApplicationServices> ServicesInstance
               = new Lazy<ApplicationServices>(() => new 
               ApplicationServices()); //Lazy載入

        private ProjectSettingManager _projectManager;

        public ProjectSettingManager ProjectManager
        {
            get { return _projectManager;
        }

        public static ApplicationServices Instance
        {
            get { return ServicesInstance.Value; }
        }

        public ApplicationServices()
        {
              
        }

}