in my code I have

Public dateFormat  as string = "dd/MMM/yy"

3 M's not 2. That forces the user to enter 13/dec/11. There is no ambiguity there.


>sorry, i try your code , but it always return false........ eg(13/12/2011 or 12/13/2011)
>how can i do to check date ?
>
>

>Imports System.Threading
>Imports System.Globalization
>
>Public dateFormat As String = "dd/MM/yy"
>
>    Function checkDate(ByVal c As String) As Boolean
>        Dim d As Date
>        Return Date.TryParseExact(c, dateFormat, CultureInfo.CurrentCulture, DateTimeStyles.AssumeLocal, d)
>    End Function
>