Parameters of datetime. tostring () method about time format conversion in ASP. NET

Sometimes we need to convert the time to achieve different display effects. Default format: 14:33:34 What should I do if I want to convert it to 200506, 06--6-6 or more? We need to use the datetime. tostring method (string, iformatprovider) Using system; Using system. Globalization; String format = "D "; Datetime date = datatime, now; Response. Write (date. tostring (format, datetimeformatinfo. invariantinfo )); Result output Thursday, June 16,200 5 detailed usage of the format parameter /description D shortdatepattern D longdatepattern F complete date and time (long date and short time) F fulldatetimepattern (long date and long time) G General (short date and short time) G General (short date and long time) M, M monthdaypattern R, R rfc1123pattern S uses the local time sortabledatetimepattern (based on ISO 8601) T shorttimepattern T longtimepattern U universalsortabledatetimepattern is used to display the format of universal time U uses the complete date and time of Universal Time (long date and long time) Y, y yearmonthpattern