如何在C中扩充匿名类型对象#

例如,我经常需要用一个属性来扩充一个对象。直到现在(厌倦了)我也这么做了:

var someListOfObjects = ...;

var objectsWithMyProperty = from o in someListOfObjects
                            select new
                            {
                                o.Name,    /* Just copying all the attributes I need */
                                o.Address, /* which may be all of them. */

                                SomeNewProperty = value
                            };

有什么聪明的办法吗?我以前做过的事情是这样的:

var objectsWithMyProperty = from o in someListOfObjects
                            select new
                            {
                                OldObject = o,           /* I access all of the old properties from here */    
                                SomeNewProperty = value
                            };

我想这可以通过一些思考来完成,但是我想有一种更快的方法可以使一些东西与第一种麻烦的方法等价。

谢谢,拉丝