NaN in Decimal Column? Dynamic Class

[hoffmanc]

Here is what I'm trying to do:

Code:

var cb = new DelimitedClassBuilder(tableName, "\t"); cb.AddField("myCol", typeof(System.Decimal)); cb.LastField.FieldNullValue = new FieldNullValueAttribute(typeof(System.String), "NaN");

When I try to run this code, I receive the following error:

Code:

Invalid cast from 'System.String' to 'FileHelpers.FieldNullValueAttribute'.

Is there some other way to set a non-System.Decimal NullValue?