AdomdDataReader.IsDBNull-Methode
Returns a Boolean that contains a value indicating whether the column is set to null.
Namespace: Microsoft.AnalysisServices.AdomdClient
Assembly: Microsoft.AnalysisServices.AdomdClient (in Microsoft.AnalysisServices.AdomdClient.dll)
Syntax
'Declaration
Public Function IsDBNull ( _
ordinal As Integer _
) As Boolean
'Usage
Dim instance As AdomdDataReader
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
Parameter
- ordinal
Typ: System.Int32
The zero-based ordinal position of the column to find.
Rückgabewert
Typ: System.Boolean
A Boolean containing true if the column is set to nullein NULL-Verweis (Nothing in Visual Basic); false otherwise.
Implementiert
Hinweise
Call this method to check for nullein NULL-Verweis (Nothing in Visual Basic) column values before calling the typed methods used to retrieve column values (for example, GetByte, GetChar, and so on), to avoid raising an error.