Objet de flux ADO
Objet de flux (ADO version 2.5)
L'objet de flux ADO est utilisé pour lire, écrire et gérer un flux de données binaires ou de texte.
Un objet Stream peut être obtenu de trois manières :
- Depuis une URL pointant vers un document, un dossier ou un objet Record
- En instanciant un objet Stream pour stocker des données pour votre application
- En ouvrant l'objet Stream par défaut associé à un objet Record
Syntaxe
objectname.property
objectname.method
Propriétés
| 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 |
Méthodes
| Method | 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 |