You can use Extension Methods to add methods to existing types without declaring a new derived type, recomelling...

?1?namespace?XuExtensionMethods
?2?{
?3?????public?static?class?XuExtensions
?4?????{
?5?????????public?static?int?GetMagic(this?String?stri)
?6?????????{
?7?????????????return?stri
?8?????????}
?9?????}???
10?}

轉載于:https://www.cnblogs.com/xuxiaoguang/archive/2008/07/31/1257078.html

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