IDataReaderExtension Interface

Definition

public interface class IDataReaderExtension : IDisposable, Microsoft::ReportingServices::DataProcessing::IDataReader

public interface IDataReaderExtension : IDisposable, Microsoft.ReportingServices.DataProcessing.IDataReader

type IDataReaderExtension = interface
    interface IDataReader
    interface IDisposable

Public Interface IDataReaderExtension
Implements IDataReader, IDisposable

Implements

IDataReader IDisposable

Remarks

The IDataReaderExtension interface enables you to implement an extension of the IDataReader interface, which you can use to provide a report server with aggregation information about your result set. For more information about DataReader classes, see Implementing a DataReader Class for a Data Processing Extension.

An application does not create an instance of the IDataReaderExtension interface directly, but creates an instance of a class that implements IDataReaderExtension.

Classes that implement IDataReaderExtension must also implement the required members, and typically define additional members to add provider-specific functionality. Because IDataReaderExtension inherits from IDataReaderExtension, you must also implement all of the IDataReaderExtension members as part of your DataReader class.

Changes made to a result set by another process or thread while data is being read may be visible to the user of a class that implements an IDataReaderExtension. However, the precise behavior is both provider and timing dependent.

Users do not create an instance of a DataReader class directly. Instead, they obtain the DataReader through the ExecuteReader method of the Command object. Therefore, you should mark DataReader constructors as internal.

Properties

Methods

Applies to