IsDBNull méthode

Specifies whether the specified column is set to null.

Espace de noms : Microsoft.SqlServer.Management.Trace
Assembly : Microsoft.SqlServer.ConnectionInfoExtended (dans Microsoft.SqlServer.ConnectionInfoExtended.dll)

Syntaxe

'Déclaration
Public Function IsDBNull ( _
    ordinal As Integer _
) As Boolean
'Utilisation
Dim instance As TraceReader
Dim ordinal As Integer
Dim returnValue As Boolean

returnValue = instance.IsDBNull(ordinal)

public bool IsDBNull(
    int ordinal
)

public:
virtual bool IsDBNull(
    int ordinal
) sealed

abstract IsDBNull : 
        ordinal:int -> bool 
override IsDBNull : 
        ordinal:int -> bool

public final function IsDBNull(
    ordinal : int
) : boolean

Paramètres

ordinal
Type : System. . :: . .Int32

Valeur de retour

Type : System. . :: . .Boolean
A Boolean value that specifies whether the specified column is set to null.
If True, the value is null.
If False, the is not null.