Represents a null value.
Object
DBNull
[Visual Basic] NotInheritable Public Class DBNull Implements ISerializable, IConvertible [C#] public sealed class DBNull : ISerializable, IConvertible [C++] public __gc __sealed class DBNull : public ISerializable, IConvertible [JScript] public class DBNull implements ISerializable, IConvertible
This class is used to indicate that a parameter is missing or nonexistent. DBNull is never equal to anything. It is used in DBNull for default arguments.
DBNull is a singleton class, which means only one instance of this class can exist.
Namespace: System
Assembly: mscorlib.dll