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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

Rückgabewert

Typ: System. . :: . .Boolean
A Boolean containing true if the column is set to nullNothingnullptrunitein NULL-Verweis (Nothing in Visual Basic); false otherwise.

Implementiert

IDataRecord. . :: . .IsDBNull(Int32)

Hinweise

Call this method to check for null Nothing nullptr unit ein 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.