Метод AdomdDataReader.IsDBNull
Returns a Boolean that contains a value indicating whether the column is set to null.
Пространство имен: Microsoft.AnalysisServices.AdomdServer
Сборка: msmgdsrv (в msmgdsrv.dll)
Синтаксис
'Декларация
Public Function IsDBNull ( _
i As Integer _
) As Boolean
'Применение
Dim instance As AdomdDataReader
Dim i As Integer
Dim returnValue As Boolean
returnValue = instance.IsDBNull(i)
public bool IsDBNull(
int i
)
public:
virtual bool IsDBNull(
int i
) sealed
abstract IsDBNull :
i:int -> bool
override IsDBNull :
i:int -> bool
public final function IsDBNull(
i : int
) : boolean
Параметры
- i
Тип: System.Int32
The zero-based ordinal position of the column to find.
Возвращаемое значение
Тип: System.Boolean
A Boolean containing true if the column is set to null; false otherwise.
Реализует
Замечания
Call this method to check for null column values before calling the typed methods used to retrieve column values (for example, GetByte, GetChar, and so on), to avoid raising an error.