杨浪

摘要： 1 string str = "1,2,3,4,5,6,7"; 2 string[] strArray = str.Split(','); //字符串转数组 3 str = string.Empty; 4 str = string.Join(",", strArray);//数组转成字符串 阅读全文

摘要： using System.Linq; List ListA = new List(); List ListB = new List(); List ListResult = new List(); ListResult = ListA.Distinct().ToList();//去重 ListResult = ListA.Except(ListB).ToList(... 阅读全文