Which of IsDBNull and IsNull should be used?

Question

If in VB.NET I have DataRow and I want to test whether a column value is Null, should I use:

myDataRow.IsNull(\"Column         


        

Answer 1

From a database design and usage point of view, IsNull is the correct and accepted way to interrogate the value of a column, based on use of various database technologies including SQL, DB2, OLAP, MOLAP, RDBMS, MDBMS, SPSS, Essbase, etc. By definition Null is the absence of a value, a unknown, and Null is not even equal to Null, so any adjunct to Null is just a matter of convenience.