error handling

I have a form, in which a user enters data. One of the fields on the form is a date field. I want this to happen when a users clicks on "continue":

If the user entered an invalid date, for example the correct format is "12/12/2004". If he enters "12-12-2004" . Then I should highlight the text box for date.


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Hi gbvreddy,

Private Sub Continue_Button_Click()
  ' Validate date field here
  if not valid then
    exit sub
    ' do whatever needs to be done with a valid date
  end if
End Sub

Regards .. Alan
isValidDate will pass both of those, however you can put a date format in a registry key and then copare to that, or you can hard code it into your program though that sucks if you change your mind later on what you want to be accepted, if you use a key you can change it any time. then just focus back to text box when the form fails because of the date error.

like this
<body onload="document.forms['formName'].elements['elementName'].focus()">

where formNAme is the Name of the FORM :
<FORM name="formName" id="formName">

and elementName is the elementNAme :
<input type="text" name="elementName" id="elementName">

then pass the element name back from the validation code.
You could test if the date is valid, then format it as you wish for the user:

Private Sub cmdContinue_Click()

    'validate Text1
    With Text1
    If IsDate(.Text) Then
        .Text = Format(.Text, "MM/DD/YYYY")
        MsgBox "Please enter a valid date"
        .SelStart = 0
        .SelLength = Len(Text1.Text)
    End If
    End With
End Sub

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How about using a calendar control like the DatePicker.  Ensures user can't enter an invalid date and ensures no confusion over proper format.

gbvreddyAuthor Commented:
Thanks a lot everyone !

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Visual Basic Classic

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