Property value not saved



I have a custom DataGridViewTextBoxColumn.
I've added the following property.

<Description("Specifies a data type for validation."), _
Category("Behavior"), _
RefreshProperties(RefreshProperties.All), _

DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)>
_
Public Property DataType() As DbType
Get
Return _Type
End Get
Set(ByVal Value As DbType)
_Type = Value
End Set
End Property

When I modify the property at design time in the editor window, the
value is not saved to Designer.vb.
Any ideas why this is happening?

Mike

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