Setting foreign key values to null using property set that is a long

[Ratman]

I have this...

Public Property MetalID() As Long
Get
Return lMetalID
End Get
Set(ByVal Value As Long)
lMetalID = Value
End Set
End Property

on my webform I have this...

oPiece.MetalID = CType(ddlMetalID.SelectedValue, Long)

The prolem is that this value can be null and the top item in the
dropdown has a value of "". If I set it to 0, it will make it into
the property but still needs to be set to null somehow.

Any ideas?

Thanks in advance,

Ratman