Oggetto connessione ADO

Oggetto di connessione

L'oggetto connessione ADO viene utilizzato per creare una connessione aperta a un'origine dati. Attraverso questa connessione è possibile accedere e manipolare un database.

Se si desidera accedere a un database più volte, è necessario stabilire una connessione utilizzando l'oggetto Connessione. Puoi anche stabilire una connessione a un database passando una stringa di connessione tramite un oggetto Command o Recordset. Tuttavia, questo tipo di connessione è valido solo per una singola query specifica.

ProgID

set objConnection=Server.CreateObject("ADODB.connection")

Proprietà

Property	Description
Attributes	Sets or returns the attributes of a Connection object
CommandTimeout	Sets or returns the number of seconds to wait while attempting to execute a command
ConnectionString	Sets or returns the details used to create a connection to a data source
ConnectionTimeout	Sets or returns the number of seconds to wait for a connection to open
CursorLocation	Sets or returns the location of the cursor service
DefaultDatabase	Sets or returns the default database name
IsolationLevel	Sets or returns the isolation level
Mode	Sets or returns the provider access permission
Provider	Sets or returns the provider name
State	Returns a value describing if the connection is open or closed
Version	Returns the ADO version number

Metodi

Method	Description
BeginTrans	Begins a new transaction
Cancel	Cancels an execution
Close	Closes a connection
CommitTrans	Saves any changes and ends the current transaction
Execute	Executes a query, statement, procedure or provider specific text
Open	Opens a connection
OpenSchema	Returns schema information from the provider about the data source
RollbackTrans	Cancels any changes in the current transaction and ends the transaction

Eventi

Nota: non è possibile gestire gli eventi utilizzando VBScript o JScript (solo i linguaggi Visual Basic, Visual C++ e Visual J++ possono gestire gli eventi).

Event	Description
BeginTransComplete	Triggered after the BeginTrans operation
CommitTransComplete	Triggered after the CommitTrans operation
ConnectComplete	Triggered after a connection starts
Disconnect	Triggered after a connection ends
ExecuteComplete	Triggered after a command has finished executing
InfoMessage	Triggered if a warning occurs during a ConnectionEvent operation
RollbackTransComplete	Triggered after the RollbackTrans operation
WillConnect	Triggered before a connection starts
WillExecute	Triggered before a command is executed

Collezioni

Collection	Description
Errors	Contains all the Error objects of the Connection object
Properties	Contains all the Property objects of the Connection object

❮ Precedente Prossimo ❯

Esercitazioni ASP

Esercitazione WP

Rasoio ASP.NET

ASP classico

Riferimento ASP

Esercitazione ADO