C#动态创建单例类的对象

单例类

public class snappingclass : isnappingenvironment, iextension
    {
       
        //
        private static readonly snappingclass instance = null;
        static snappingclass()
        {
            instance = new snappingclass();            
        }

        private snappingclass()
        {
            
        }

        public static snappingclass instance
        {
            get
            {
                return instance;
            }
        }

动态创建：

void iextensionmanageradmin.startupextensions(string componentcategory, string jitcategory, ref object initializationdata)
        {
            var typeinfos = appdomain.currentdomain.getassemblies().selectmany(a => a.gettypes().where(t => t.getinterfaces().contains(typeof(iextension)))).toarray();
            foreach (var typeinfo in typeinfos)
            {
                //console.writeline(typeinfo.fullname);
                //iextension pextension = typeinfo.assembly.createinstance(v.fullname) as iextension;

                //methodinfo methodinfo = typeinfo.getmethod("instance", bindingflags.nonpublic | bindingflags.static, null, new type[] { }, null);
                //iextension pextension = methodinfo.invoke(null, null) as iextension;
                //
                propertyinfo propertyinfo = typeinfo.getproperty("instance", bindingflags.public |  bindingflags.nonpublic | bindingflags.static);
                //
                //propertyinfo[] propertyinfos = typeinfo.getproperties(bindingflags.public | bindingflags.nonpublic | bindingflags.static);
                //foreach (propertyinfo propertyinfo in propertyinfos)
                //{
                //    console.writeline(propertyinfo.name);
                //}
                iextension pextension = propertyinfo.getvalue(null, null) as iextension;
                //
                pextension.startup(ref initializationdata);
                this.pextensionlist.add(new keyvaluepair<string, iextension>(pextension.name, pextension));
            }
        }

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