• Article

Classe AdomdDataReader

Provides a means of reading a forward-only result set that is obtained by running a command, and can be used to access analytical data sources.

Espace de noms :  Microsoft.AnalysisServices.AdomdClient
Assembly :  Microsoft.AnalysisServices.AdomdClient (dans Microsoft.AnalysisServices.AdomdClient.dll)

Syntaxe

'Déclaration
Public NotInheritable Class AdomdDataReader _
    Inherits MarshalByRefObject _
    Implements IDataReader, IDisposable, IDataRecord, IEnumerable
'Utilisation
Dim instance As AdomdDataReader

public sealed class AdomdDataReader : MarshalByRefObject, 
    IDataReader, IDisposable, IDataRecord, IEnumerable

public ref class AdomdDataReader sealed : public MarshalByRefObject, 
    IDataReader, IDisposable, IDataRecord, IEnumerable

[<SealedAttribute>]
type AdomdDataReader =  
    class
        inherit MarshalByRefObject
        interface IDataReader
        interface IDisposable
        interface IDataRecord
        interface IEnumerable
    end

public final class AdomdDataReader extends MarshalByRefObject implements IDataReader, IDisposable, IDataRecord, IEnumerable

Notes

The AdomdDataReader class is the implementation of the [System.Data.IDataReader] interface for ADOMD.NET. All Microsoft .NET Framework data providers implement the [System.Data.IDataReader] interface as a way of quickly reading forward-only result sets.

To create an AdomdDataReader, you must call the ExecuteReader method of the AdomdCommand, rather than directly using a constructor.

While the AdomdDataReader is in use, the AdomdCommand and the associated AdomdConnection is busy serving the AdomdDataReader. While in this state, no operations can be performed on the AdomdConnection or AdomdCommand objects other than closing them. This remains the case until the Close or Dispose method of the AdomdDataReader is called. Changes made to a result set by another process or thread while data is being read may be visible to the user of the AdomdDataReader. However, the precise behavior is timing dependent.

IsClosed and RecordsAffected are the only properties that you can call after the AdomdDataReader is closed.

Hiérarchie d'héritage

System. . :: . .Object
  System. . :: . .MarshalByRefObject
    Microsoft.AnalysisServices.AdomdClient..::..AdomdDataReader

Sécurité des threads

Tous les membres publics static (Shared dans Visual Basic) de ce type sont thread-safe. Il n'est pas garanti que les membres d'instance soient thread-safe.