Well, I thought I had it beat.

Turn out, after trying to implement data bindings on the business class object, problems re-emerged.  To correct, I had to implement corrective code in the class date property constructor as follows. . .

Private _RevisionDate as Date

Public Property RevisionDate() as Date
Get
 If _RevisionDate.Year=1 Then
  Return CDate(“1/1/1753”)
 Else
  Return _RevisionDate
 End IF
End Get
Set(ByVal value as Date)
 If value = CDate(“1/1/1753”) Then value = Nothing
 _RevisionDate = value
End Set
End Property

Then, after setting the form data bindings on the controls to the business class object, I still had to force a Null value into the date control, like . . .

If CType(Me.RevisionDate.Value, Date) = CType("1/1/1753 12:00:00 AM", Date) Then _
Me.RevisionDate.Value = Nothing

And the control is still not correct, as it does not allow the user to enter and then leave without setting a valid date value.  So am I missing something here?

Regards,
Rob

Hi Mike,

 I kept getting the error " value cannot be set outside the range of the min/max value . . ." something like that.  I found the problem was comming from the fact that the application is using business object class, where a null datetime property will carry a value of  "1/1/001 12:00:00 AM" which, if I am not mistaken,  is different the Infragistics minimum value for this datatype,

Anyway, I corrected the problem by putting a check for Year on in the code that loads the data into form controls.

If myClass.RevisionDate.Date.Year = 1 Then

   myDateControl.Value=Nothing

Else

   myDateControl.Value= MyClass.RevisionDate

End If

I could have put the code in the Class property declaration itself, but then the class cause problems elsewhere accross the solution.

Regards,

Rob