C# List泛型转换，int,string 转字符，转数组

List<string> List = new List<string>();
string strArray = string.Join(",", List);

string str = "2,4,4,4";
List<string> List=new List<string> (str.Split(','))

string str = "2,4,4,4";
int[] list = Array.ConvertAll<string, int>(str.Split(','), s => int.Parse(s));

List<string> List = new List<string>();
string strArray = string.Join(",", List);int[] list = Array.ConvertAll<string, int>(strArray.Split(','), s => int.Parse(s));