Объект потока ADO
Потоковый объект (ADO версии 2.5)
Объект ADO Stream используется для чтения, записи и управления потоком двоичных данных или текста.
Объект Stream можно получить тремя способами:
- Из URL-адреса, указывающего на документ, папку или объект Record
- Создавая экземпляр объекта Stream для хранения данных для вашего приложения.
- Открыв объект Stream по умолчанию, связанный с объектом Record
Синтаксис
objectname.property
objectname.method
Характеристики
| 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 |
Методы
| 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 |