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Objet de jet d'AGITATION


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L'objet de jet d'objet de donn�es d'ActiveX (AGITATION) permet d'acc�der � un jet des donn�es des textes ou des donn�es binaires. Par l'acc�s, nous voulons dire la capacit� d'�crire, lisons, et contr�lons le jet.




Une zone-tampon dont la teneur du jet peut �tre lue. La nature du contenu d'un jet pourrait �tre texte ou type binaire d'information, bien que la documentation de Microsoft mentionne juste la partie binaire.


Nous pouvons avons obtenu un objet de jet par trois mani�res :

1. D'un URL se dirigeant � un objet contenant des donn�es des textes ou des donn�es binaires. Cet objet peut �tre un document simple, un objet record repr�sentant un document structur�, ou une chemise.


2. En ouvrant le jet d'AGITATION de d�faut objecter associ� � un objet record. Vous pouvez obtenir le jet de d�faut li� � l'objet record quand le disque est ouvert, pour �liminer un aller-retour juste pour ouvrir le jet.


3. Par instantiating un objet de jet d'AGITATION. Ces objets de jet peuvent �tre employ�s pour stocker des disques ou des donn�es pour les buts de notre application. � la diff�rence d'un jet li� � l'URL, ou du jet de d�faut des disques, instantiated le jet n'a aucune association avec une source fondamentale par d�faut.




Employer l'objet de jet d'AGITATION pour acc�der au jet d'un article.

Par exemple :

Dim Stm As ADODB.Stream
Dim Rec as New ADODB.Record
Dim Conn as New ADODB.Connection
Dim Stm2 as New ADODB.Stream
Dim Url As String

Url = "http://server/public/dataitem.txt"

Conn.Provider = "ExOLEDB.DataSource"
Conn.Open Url
Rec.Open Url, Conn
Set Stm = Rec.Fields(adDefaultStream).Value
' Or, alternately
Stm2.Open Rec, adModeRead, adOpenStreamFromRecord

'...
Conn.Close
Rec.Close
Stm.Close
Stm2.Close
Set Conn = Nothing
Set Rec = Nothing
Set Stm = Nothing
Set Stm2 = Nothing


Propri�t�s d'objet de Stram d'AGITATION.

Property Description
CharSet

Sets or returns a value that specifies into which character set the contents are to be translated. This property is only used with text Stream objects (type is adTypeText)

EOS

Returns whether the current position is at the end of the stream or not

LineSeparator

Sets or returns the line separator character used in a text Stream object

Mode

Sets or returns the available permissions for modifying data

Position

Sets or returns the current position (in bytes) from the beginning of a Stream object

Size

Returns the size of an open Stream object

State

Returns a value describing if the Stream object is open or closed

Type

Sets or returns the type of data in a Stream object


M�thodes d'objet de Stram d'AGITATION.

Methods Description
Cancel Cancels an execution of an Open call on a Stream object
Close Closes a Stream object
CopyTo

Copies a specified number of characters/bytes from one Stream object into another Stream object

Flush

Sends the contents of the Stream buffer to the associated underlying object

LoadFromFile Loads the contents of a file into a Stream object
Open Opens a Stream object
Read

Reads the entire stream or a specified number of bytes from a binary Stream object

ReadText

Reads the entire stream, a line, or a specified number of characters from a text Stream object

SaveToFile Saves the binary contents of a Stream object to a file
SetEOS

Sets the current position to be the end of the stream (EOS)

SkipLine Skips a line when reading a text Stream
Write Writes binary data to a binary Stream object
WriteText Writes character data to a text Stream object




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Mots-cl�s : Objet de jet d'AGITATION, objet de jet d'adodb, objet de base visuel, agitation de base visuelle, filet de l'agitation asp, serveur de l'agitation SQL


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