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List<string> 转 List<int>
var list = (new[]{"1","2","3"}).ToList();
var newlist = list.Select<string,int>(x =>Convert.ToInt32(x));
List<int> 转List<string>
List<int> list = new List<int>(new int[] { 1,2,3 } );
List<string> newList = list.ConvertAll<string>(x => x.ToString());
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原文地址：http://www.cnblogs.com/flywing/p/5912258.html
