Hi Rex,

The FillSchema method will set the AutoIncrement, AllowDBNull, and MaxLength properties on the columns returned and will also create a primary key on the resulting DataTable if the database indicates that a column or set of columns represents a primary or unique key.

The Fill method, by default does not fetch this information because this information could be costly and may not be needed by the developer. If you need that information with the Fill, you can use the MissingSchemaAction property.


>All,
>
>I am loading a dataset for adding new records. When I use FillSchema and try to add a new row to the DataSet, I get a message that a column cannot be null, but if I use Fill with a parameter that is not in the table and use the same new row method it works. What is the difference?
>
>TIA
>
>Rex