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ADO Open Method

❮ Complete Connection Object Reference

The Open method opens a connection to a data source. When the connection is open, you can execute commands against the data source.


connection.Open connectionstring,userID,password,options

Parameter Description
connectionstring Optional. A string value that contains information about the connection. The string is composed of a series of parameter=value statements separated by semicolons.

Provider= the name of the provider
File Name= the file that contains the connection information
Remote Provider= the name of the provider to open a client-side connection
Remote Server= the path name to the server to open a client-side connection
URL= the absolute URL address to use for the connection. 

See the ConnectionString property for details.

userID Optional. A String value that contains a user name for the connection
password Optional. A String value that contains a password for the connection
options Optional. A ConnectOptionEnum value that determines whether this method should return after or before the connection is established.


A DSN-less connection:

set conn=Server.CreateObject("ADODB.Connection")
conn.Open "c:/webdata/northwind.mdb"

A DSN-less connection with userID and password
(write the conn.open statement in ONE line):

set conn=Server.CreateObject("ADODB.Connection")
conn.Open "Provider=Microsoft.Jet.OLEDB.4.0;
data source=c:/webdata/northwind.mdb;

An ODBC Database Connection:

set conn=Server.CreateObject("ADODB.Connection")
conn.Open "northwind"


Constant Value Description
adConnectUnspecified -1 Default. Opens the connection synchronously (after).
adAsyncConnect 16 Opens the connection asynchronously (before).

❮ Complete Connection Object Reference