VistaDB 5






The zero-based column ordinal.
IsDBNull Method (VistaDBDataReader)
Gets a value that indicates whether the column contains nonexistent or missing values.
Syntax
'Declaration
 
Public Overrides NotOverridable Function IsDBNull( _
   ByVal ordinal As System.Integer _
) As System.Boolean
'Usage
 
Dim instance As VistaDBDataReader
Dim ordinal As System.Integer
Dim value As System.Boolean
 
value = instance.IsDBNull(ordinal)
public override System.bool IsDBNull( 
   System.int ordinal
)
public function IsDBNull( 
    ordinal: System.Integer
): System.Boolean; override; 
public override function IsDBNull( 
   ordinal : System.int
) : System.boolean;
public: System.bool IsDBNull( 
   System.int ordinal
) override 
public:
System.bool IsDBNull( 
   System.int ordinal
) override 

Parameters

ordinal
The zero-based column ordinal.

Return Value

true if the specified column is equivalent to DBNull; otherwise false.
Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

See Also