String.Format
String.Format("{0:#,#0.00##}", 1234123.4567890) "1,234,123.4568" String.Format("{0:#,#0.00##}", 1234123.400) "1,234,123.40" String.Format("{0:#,#0.00##}", 1234123.4100) "1,234,123.41" String.Format("{0:#,#0.00##}", 1234123.4120) "1,234,123.412"
C#
2010. 9. 1. 09:35