Errors and Data Binding

[Jeff Mullins]

I am designing a Windows Form application that binds controls to public properties in a component class. For instance, a DateTimePicker control has its value property bound to the component's CourtDate property. If the passed date is invalid I need to throw an execption to notify the client that they chose an incorrect date/time. The problem is that when the execption is thrown in the component the client receives no error notification or I don't know what to do catch it. Any suggestions?

Example:
In the form:
Me.dtpCourtDate.DataBindings.Add(New Binding("Text", oJuror, "CourtDate"))
In the component:
Public Property CourtDate() As DateTime
Get
Return strcJuror.CourtDate
End Get
Set(ByVal Value As DateTime)
Dim dCheck As DateTime
Try
dCheck = Format(Value, "MM/dd/yyyy hh:mm:ss")
If not dCheck < Today Then
Throw New Exception("Court date must be today's date or greater.")
exit property
End If
Catch ex As Exception
Throw New Exception("Date value is incorrect.")
End Try