I seem to be missing something wrt nullable types.
I have a class that has a property (forgive the VB):
Private _dateRangeFrom As Nullable(Of DateTime)
Public Overridable Property DateRangeFrom() As Nullable(Of DateTime)
Get
Return _dateRangeFrom
End Get
Set(ByVal value As Nullable(Of DateTime))
_dateRangeFrom = value
End Set
End Property
My mapping for the property is:
<property name="DateRangeFrom" />
The column in the database (Sql Server 2005) is a datetime that permits nulls.
The problem seems to be when I try to retrieve a record from the table
where DateRangeFrom is NULL. I keep getting the exception:
NHibernate.PropertyAccessException : Invalid Cast (check your mapping
for property type mismatches); setter of
ProSanos.Works.Model.EraSelectionDef
----> System.InvalidCastException : Specified cast is not valid.
I'm certain that this is the property where the exception is
occurring, since I have set breakpoints on the properties, and this is
where it fails.
One other piece of information: when I step into the Set method of the
offending property and look at the value of the nullable type,
HasValue returns false.
Did I leave something out? Everything that I've found by google-ing
seems to indicate that the above code should be enough.
Thanks,
Mark
--
You received this message because you are subscribed to the Google Groups
"nhusers" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/nhusers?hl=en.
