This exception is thrown when you set the Value
property of a SQL structure to null . To prevent
throwing this exception, you should check the
IsNull property of the structure before accessing
the Value property.
public sealed class SqlNullValueException : SqlTypeException {
// Public Constructors
public SqlNullValueException( );
public SqlNullValueException( string message);
public SqlNullValueException(string message, Exception e);
}