求日期得到今天星期几

Question

int w=(int)DateTime.Now.DayOfWeek

Answer 1

DateTime.Now.DayOfWeek是string型的吧,能强制转换成int?

Answer 2

 string s = "20140506";
                DateTime dt = Convert.ToDateTime(s.Substring(0, 4)+"-" + s.Substring(4, 2)+"-" + s.Substring(6, 2));
                string week = dt.DayOfWeek.ToString();  

Answer 3

string time = "2014-05-06";
string dt=DateTime.Parse(time).DayOfWeek；
string week="":
                switch (dt)
                {
                    case "Monday":
                        week = "1";
                        break;
                    case "Tuesday":
                        week = "2";
                        break;
                    case "Wednesday":
                        week = "3";
                        break;
                    case "Thursday":
                        week = "星期四";
                        break;
                    case "Friday":
                        week = "5";
                        break;
                    case "Saturday":
                        week = "6";
                        break;
                    case "Sunday":
                        week = "7";
                        break;                }

Answer 4

string str = "20100531";
            string temp = DateTime.ParseExact(str, "yyyyMMdd", null).DayOfWeek.ToString();
            Response.Write(temp );