Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
154 views
in Technique[技术] by (71.8m points)

c# - How to assign List<T> without it being a reference to the original List<T>?

For example

List<string> name_list1 = new List<string>();
List<string> name_list2 = new List<string>();

later in the code:

name_list1.Add("McDonald");
name_list1.Add("Harveys");
name_list1.Add("Wendys");

name_list2 = name_list1; // I make a copy of namelist1 to namelist2

So, from this point I would like to keep adding element or making changes in name_list2 without affecting name_list1. How do I do that?

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)
name_list2 = new List<string>(name_list1);

This will clone the list.

Edit: This solution only works for primitive types. For objects, see other responses below.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...