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.
Syntax
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 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. |
Example
A DSN-less connection:
<%
set conn=Server.CreateObject("ADODB.Connection")
conn.Provider="Microsoft.Jet.OLEDB.4.0"
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;
userID=xxx;
password=yyy"
%>
An ODBC Database Connection:
<%
set conn=Server.CreateObject("ADODB.Connection")
conn.Open "northwind"
%>
<%
set conn=Server.CreateObject("ADODB.Connection")
conn.Provider="Microsoft.Jet.OLEDB.4.0"
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;
userID=xxx;
password=yyy"
%>
An ODBC Database Connection:
<%
set conn=Server.CreateObject("ADODB.Connection")
conn.Open "northwind"
%>
ConnectOptionEnum
| Constant | Value | Description |
|---|---|---|
| adConnectUnspecified | -1 | Default. Opens the connection synchronously (after). |
| adAsyncConnect | 16 | Opens the connection asynchronously (before). |
Complete Connection Object Reference
