We are using typed datasets for all our business class. When trying to
reterive data which contain null values using ASADataAdapter.Fill (dataset
as Dataset,srcTable as string) method by passing in typed dataset and a
table name the object throws an invalid cast exception. Our typed dataset
contain columns which are defined to accept nulls. The version that I am
currently running is 8.0.2 Build 4239 and the platform is Windows.

Thanks in advance for your help.