(vb.net) Format()

Dim TestDateTime As Date = #1/27/2001 5:04:23 PM#
Dim TestStr As String 
' Returns current system time in the system-defined long time format.
TestStr = Format(Now(), "Long Time")
' Returns current system date in the system-defined long date format.
TestStr = Format(Now(), "Long Date")
' Also returns current system date in the system-defined long date  
' format, using the single letter code for the format.
TestStr = Format(Now(), "D")

' Returns the value of TestDateTime in user-defined date/time formats. 
' Returns "5:4:23".
TestStr = Format(TestDateTime, "h:m:s")
' Returns "05:04:23 PM".
TestStr = Format(TestDateTime, "hh:mm:ss tt")
' Returns "Saturday, Jan 27 2001".
TestStr = Format(TestDateTime, "dddd, MMM d yyyy")
' Returns "17:04:23".
TestStr = Format(TestDateTime, "HH:mm:ss")
' Returns "23".
TestStr = Format(23)

' User-defined numeric formats. 
' Returns "5,459.40".
TestStr = Format(5459.4, "##,##0.00")
' Returns "334.90".
TestStr = Format(334.9, "###0.00")
' Returns "500.00%".
TestStr = Format(5, "0.00%")참고


MessageBox.Show(String.Format("{0:D4}", 23))

{0:D4} 4글자 길이로 23을 제외하고 0으로 채운다 -> "0023"



참고 : http://idunno.org/archive/2004/07/14/122.aspx