Статья
04/01/2012

Метод IsDBNull

Specifies whether the specified column is set to null.

Пространство имен: Microsoft.SqlServer.Management.Trace
Сборка: Microsoft.SqlServer.ConnectionInfoExtended (в Microsoft.SqlServer.ConnectionInfoExtended.dll)

Синтаксис

'Декларация
Public Function IsDBNull ( _
    ordinal As Integer _
) As Boolean
'Применение
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

Параметры

ordinal
Тип: System. . :: . .Int32
An Int32 value that specifies the column position of the data.

Возвращаемое значение

Тип: 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.