public static TypeDes CreateType(IDictionary<string, Type> propertys, Type parent)
        {
            StringBuilder sb = new StringBuilder();
            var e = propertys.GetEnumerator();
            while (e.MoveNext())
            {
                sb.Append(e.Current.Key + ":" + e.Current.Value.FullName + ",");
            }
            string pname = MD5Core.GetHashString(sb.ToString(0, sb.Length - 1));
            TypeDes typedes;
            if (!typeCache.TryGetValue(pname, out typedes))
            {
                AssemblyName aName = new AssemblyName(Guid.NewGuid().ToString());
                AssemblyBuilder ab = AppDomain.CurrentDomain.DefineDynamicAssembly(aName, AssemblyBuilderAccess.Run);
                ModuleBuilder mb = ab.DefineDynamicModule(aName.Name);
                TypeBuilder tb = mb.DefineType(pname, TypeAttributes.Public, parent);//parent就是所需继承的父类
                ConstructorBuilder ctor0 = tb.DefineConstructor(MethodAttributes.Public, CallingConventions.Standard, Type.EmptyTypes);
                ILGenerator ctor0IL = ctor0.GetILGenerator();
                ctor0IL.Emit(OpCodes.Ldarg_0);
                ctor0IL.Emit(OpCodes.Call, typeof(object).GetConstructor(Type.EmptyTypes));
                ctor0IL.Emit(OpCodes.Ret);
                MethodAttributes getSetAttr = MethodAttributes.Public | MethodAttributes.SpecialName | MethodAttributes.HideBySig;
                FieldBuilder fb = null;
                PropertyBuilder pb = null;
                MethodBuilder mba = null;
                ILGenerator il = null;
                foreach (string key in propertys.Keys)
                {
                    //创建私有字段，存放属性值
                    fb = tb.DefineField("_" + key, propertys[key], FieldAttributes.Private);
                    //创建公有属性
                    pb = tb.DefineProperty(key, PropertyAttributes.HasDefault, propertys[key], null);
                    //设置GET方法
                    mba = tb.DefineMethod("get_" + key, getSetAttr, propertys[key], Type.EmptyTypes);
                    il = mba.GetILGenerator();
                    il.Emit(OpCodes.Ldarg_0);
                    il.Emit(OpCodes.Ldfld, fb);
                    il.Emit(OpCodes.Ret);
                    pb.SetGetMethod(mba);
                    //设置SET方法
                    mba = tb.DefineMethod("set_" + key, getSetAttr, null, new Type[] { propertys[key] });
                    il = mba.GetILGenerator();