AdoDotNetReader Class

Artículo
02/28/2011

Provides an implementation of the DataReader class based on the IVsDataReader and IVsDataReaderDescriptor interfaces. This implementation uses the ADO.NET DbDataReader object.

Inheritance Hierarchy

System.Object
Microsoft.VisualStudio.Data.Framework.DataReader
Microsoft.VisualStudio.Data.Framework.AdoDotNet.AdoDotNetReader

Namespace: Microsoft.VisualStudio.Data.Framework.AdoDotNet
Assembly: Microsoft.VisualStudio.Data.Framework (in Microsoft.VisualStudio.Data.Framework.dll)

Syntax

'Declaración
Public Class AdoDotNetReader _
    Inherits DataReader

public class AdoDotNetReader : DataReader

public ref class AdoDotNetReader : public DataReader

type AdoDotNetReader =  
    class
        inherit DataReader
    end

public class AdoDotNetReader extends DataReader

The AdoDotNetReader type exposes the following members.

Constructors

	Name	Description
	AdoDotNetReader(DbDataReader)	Initializes a parameterized instance of the AdoDotNetReader class with an ADO.NET data reader object.
	AdoDotNetReader(DbDataReader, DbCommand)	Initializes a parameterized instance of the AdoDotNetReader class with an ADO.NET data reader object and a command object.

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Properties

	Name	Description
	Descriptor	Gets information that describes the data from a data source. (Inherited from DataReader.)
	HasDescriptor	Gets a value indicating whether the data parameter exposes its IVsDataReaderDescriptor implementation through the Descriptor() property. (Overrides DataReader.HasDescriptor.)
	IsClosed	Gets a value indicating whether the specified data reader instance is closed. (Overrides DataReader.IsClosed.)
	ItemCount	Gets the number of items in the current block of data. (Overrides DataReader.ItemCount.)
	Status	Gets a numerical status code returned by the method currently providing data to the data reader. (Overrides DataReader.Status.)
	UnderlyingReader	Gets the underlying DbDataReader object instance that is used by this class.

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Methods

	Name	Description
	Close	Closes the current DbDataReader object instance. (Overrides DataReader.Close().)
	Dispose()	Releases managed resources held for the current DataReader instance. (Inherited from DataReader.)
	Dispose(Boolean)	Cleans up resources associated with the current DataReader instance, both when the public Dispose method is called and when the object is finalized with a call to the Finalize method. (Inherited from DataReader.)
	Equals	Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
	Finalize	Finalizes the current DataReader instance. (Inherited from DataReader.)
	GetBytes(String, array<Byte[], Int32, Int32)	Retrieves a specified number of bytes of raw binary data. (Inherited from DataReader.)
	GetBytes(Int32, array<Byte[], Int32, Int32)	Retrieves a specified number of bytes of binary data. (Overrides DataReader.GetBytes(Int32, array<Byte[], Int32, Int32).)
	GetHashCode	Serves as a hash function for a particular type. (Inherited from Object.)
	GetItem(Int32)	Retrieves an object instance representing the retrievable item, as determined by an index in the current block of data. (Overrides DataReader.GetItem(Int32).)
	GetItem(String)	Retrieves an object instance representing the retrievable item as specified by name. (Overrides DataReader.GetItem(String).)
	GetItemIndex	Retrieves the index of the item for the given item name, such as the index of a column for a given column name. (Overrides DataReader.GetItemIndex(String).)
	GetItemMaxLength	Retrieves the maximum length, in characters, of data items at the specified index. (Overrides DataReader.GetItemMaxLength(Int32).)
	GetItemName	Retrieves the name assigned to the data item at the specified index, if any. (Overrides DataReader.GetItemName(Int32).)
	GetItemType(Int32)	Retrieves the data type of a data item, or items, at the specified index for the default format Default. (Inherited from DataReader.)
	GetItemType(Int32, DataItemTypeFormat)	Retrieves the data type of a data item, or items, at the specified index in a specified format. (Overrides DataReader.GetItemType(Int32, DataItemTypeFormat).)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	IsNullItem(String)	Indicates whether the value of the given data item is unspecified, that is, nulla null reference (Nothing in Visual Basic). (Inherited from DataReader.)
	IsNullItem(Int32)	Indicates whether the value of the data item at the specified index is unspecified, that is, nulla null reference (Nothing in Visual Basic). (Overrides DataReader.IsNullItem(Int32).)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	NextResult	Advances the data reader to the next result if the reader contains multiple results. (Overrides DataReader.NextResult().)
	Read	Advances the reader to the next block of data if the reader contains more than one block. (Overrides DataReader.Read().)
	Terminate	Terminates the data reader immediately, without necessarily returning all of the data or setting output parameters. (Overrides DataReader.Terminate().)
	ToString	Returns a string that represents the current object. (Inherited from Object.)

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Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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