Date problem

my app. closed when a user type a wrong DATE in the form - i used MASK Edit control , what is a problem ?
ahmedaliAsked:
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greenoCommented:
To solve your problem I would change the mask edit control to a normal edit control and then use the controls  Validate event. The Validate event will stop the control from losing focus if invalid data is entered.

Change the maskedit to a normal textbox called txtDate

Implement the Validate event.

Private Sub txtDateValidate(Cancel As Boolean)
  If Not IsDate(txtDate) or txtDate = "" Then
    MsgBox "Not a valid date."
    Cancel = True  
  Else If DateDiff("d", txtDate, Now) < 0 Then
    MsgBox "Date must be before today"
    Cancel = True
  End If
End Sub
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ahmedaliAuthor Commented:
Adjusted points from 5 to 15
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pjknibbsCommented:
What error did you get?
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BobbyOwensCommented:
It may be a problem in that the format of the date was correct, but the date itself isn't.

e.g. 31/02/2000

Your best bet is to use the CDate function in the validate event.

eg:
dim dtmDate as date

on error resume next
dtmDate = cdate(mskDate.Text)
if err <> 0 then
  cancel = true
end if
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lochianoCommented:
Another solution is to use the DTPicker control.  The adventage of this is that the value returned is a data.  You can set a Min and a Max date for a value range.

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Jeremy_DCommented:
The problem is that you didn't have an error handler. Unhandled errors cause the application to close down.
In the sub you assign the returned value from the control (probaly some Change-event) to a variable, include an errorhandler:

Private Sub MyControl_Change(...)
    On Error Goto ErrHandler

    'Your code goes here

    Exit Sub

ErrHandler:
    MsgBox "You typed in an invalid date, try again."
    Resume
End Sub


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ahmedaliAuthor Commented:
Hello   Thank you for your comment ,i have accept it as an answer and i give you the points and Excellent grade .
note:
there is no seperator .
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