DataRow and ColumnError property

[Wokawidget]

How do I utilise this.
I do:

Public Function ValidateFields(ByRef Data As Mowlem.Booking.BusinessRules.BookingData.BookingEditRow) As Boolean
        If Data.AssetKey < 1 Then
            Data.SetColumnError("AssetKey", "Required")
        End If
 
        'Blah blah blah
 
End function

So I validate the row, and add errors to it.
How do i show these in the UI?
What I mean is, can .NET automatically bind these or something, or do i manually have to write code to handle and display these errors?

Woka