Somebody come to this site by searching for "how to get day in asp.net"

well, here you go.

Response.Write(DateTime.Now.Day.ToString());

It will return day of the month (integer)

Response.Write(DateTime.Now.DayOfWeek.ToString());

It will return day of the week e.g. Sunday,Monday, Tuesday, etc.

Response.Write(DateTime.Now.DayOfYear.ToString());

It will return day of the year like 133 day out of 365