How to check give value or string is datetime or not ?

See more:

VB

ASP.NET

Hi How to check given value or string is datetime or not in vb.
E.g:User can give value like this 100-10-6-1,actually "100-10-6-1" is serial no,so how to check this is datetime or not in asp.net using vb.

'Below all not working correctly

 Dim value1 As String = "100-10-6-1"
 Dim inta As DateTime
 If (Not DateTime.TryParse(value1, inta)) Then
 ShowMessage("This is not date field !")
 Exit Sub
 End If
'--------------------------------------
  Dim value1 As String = "100-10-6-1" 'Here if give "11-11-11" also goes else part
 If stringSplit(inti).[GetType]() Is GetType(DateTime) Then
  ShowMessage("This is  date field !")
  Else
  ShowMessage("This is not date field !")
 End If

What I have tried:

http://stackoverflow.com/questions/3998685/how-to-determine-if-an-object-is-a-datetime-in-vb-net

I try this link ,but it show error
http://prntscr.com/a4rwsk




Regards
Aravind