Issue: how to handle Long values in DataSource and ListGrid

[atomatom]

It does not appear to be possible to specify a long value in a DataSource definition. Pretty much all of my keys are Long types. How should I specify this in DataSourceField and ListGridField? There is no Long type in the FieldType enums.

[Isomorphic]

A field of type integer is represented as a Long. DataSource fields are logical types, Long is a representation.