C# 数组、集合和字符串之间的相互转换

字符串转为数组

string str = "1,2,3,4";

string[] strArr = str.Split(',');

数组转为字符串

string[] scoresArr = { "1", "2", "3", "4", "5" };
string scores = string.Join(",", scoresArr);

字符串转为集合

string str = "a,b,c";

List<string> strList = str.Split(',').ToList();

集合转为字符串

List<string> abcList = new List<string> { "a", "b", "c", "d" };
string str = string.Join(",", abcList);