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<h1>ADO Open Method</h1>
<hr />
<a href="ado_ref_connection.asp"><img class="navup" src="../images/up.gif" alt="Connection Object Reference" border="0" /> Complete Connection Object Reference</a>
<hr />
<p>The Open method opens a connection to a data source. When the connection
is open, you can execute commands against the data source.
</p>
<h3>Syntax</h3>
<table class="ex" cellspacing="0" border="1" width="100%" cellpadding="3">
<tr>
<td valign="top">
<pre>connection.Open connectionstring,userID,password,options</pre>
</td>
</tr>
</table>
<br />
<table class="ex" cellspacing="0" border="1" width="100%" cellpadding="3">
<tr>
<th align="left" valign="top" width="20%">Parameter</th>
<th align="left" valign="top" width="80%">Description</th>
</tr>
<tr>
<td valign="top">connectionstring </td>
<td valign="top"> Optional. A string value that contains information about the connection.
The string is composed of a series of parameter=value statements separated by semicolons.
<p>Provider= the name of the provider<br />
File Name= the file that contains the connection information<br />
Remote Provider= the name of the provider to open a client-side connection<br />
Remote Server= the path name to the server to open a client-side
connection<br />
URL= the absolute URL address to use for the connection. </p>
<p>See the <a href="prop_conn_connectionstring.asp">ConnectionString</a> property for details.</p>
</td>
</tr>
<tr>
<td valign="top">userID </td>
<td valign="top"> Optional. A String value that contains a user name for the connection
</td>
</tr>
<tr>
<td valign="top">password </td>
<td valign="top"> Optional. A String value that contains a password for the connection
</td>
</tr>
<tr>
<td valign="top">options </td>
<td valign="top"> Optional. A <a href="#connectoptionenum">ConnectOptionEnum</a>
value that determines whether this method should return after or before
the connection is established.
</td>
</tr>
</table>
<h3>Example</h3>
<table class="ex" cellspacing="0" border="1" width="100%" cellpadding="3">
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<td valign="top">
A DSN-less connection:
<pre><%
set conn=Server.CreateObject("ADODB.Connection")
conn.Provider="Microsoft.Jet.OLEDB.4.0"
conn.Open "c:/webdata/northwind.mdb"
%></pre>
<p>A DSN-less connection with userID and password<br />
(write the conn.open statement in ONE line): </p>
<pre><%
set conn=Server.CreateObject("ADODB.Connection")
conn.Open "Provider=Microsoft.Jet.OLEDB.4.0;
data source=c:/webdata/northwind.mdb;
userID=xxx;
password=yyy"
%></pre>
<p>An ODBC Database Connection:</p>
<pre><%
set conn=Server.CreateObject("ADODB.Connection")
conn.Open "northwind"
%></pre>
</td>
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<br />
<hr />
<a name="connectoptionenum"><h3>ConnectOptionEnum</h3></a>
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<tr valign="top" align="left">
<th width="30%">Constant</th>
<th width="10%">Value</th>
<th width="60%">Description</th>
</tr>
<tr valign="top">
<td>adConnectUnspecified</td>
<td>-1</td>
<td>Default. Opens the connection synchronously (after).</td>
</tr>
<tr>
<td valign="top">adAsyncConnect</td>
<td>16</td>
<td>Opens the connection asynchronously (before).</td>
</tr>
</table>
<br />
<hr />
<a href="ado_ref_connection.asp"><img class="navup" src="../images/up.gif" alt="Connection Object Reference" border="0" /> Complete Connection Object Reference</a>
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