Clone Method Example (VBScript)
This example uses the Clone method to create copies of a Recordset and then lets the user position the record pointer of each copy independently.
Use the following example in an Active Server Page (ASP). This example uses the Northwind database distributed with Microsoft Access. Cut and paste the following code to Notepad or another text editor and save it as CloneVBS.asp. You can view the result in any client browser.
To exercise the example, change the line RsCustomerList.Source = "Customers" to RsCustomerList.Source = "Products" to count a larger table.
<!-- BeginCloneVBS -->
<% Language = VBScript %>
<%' use this meta tag instead of adovbs.inc%>
<!--METADATA TYPE="typelib" uuid="00000205-0000-0010-8000-00AA006D2EA4" -->
<HTML>
<HEAD>
<TITLE>ADO Clone Method</TITLE>
</HEAD>
<BODY>
<H1 align="center">ADO Clone Method</H1>
<HR>
<% ' to integrate/test this code replace the
' Data Source value in the Connection string%>
<%
' connection and recordset variables
Dim Cnxn, strCnxn
Dim rsCustomers, strSQLCustomers
Dim rsFirst, rsLast, rsCount
Dim rsClone
Dim CloneFirst, CloneLast, CloneCount
' open connection
Set Cnxn = Server.CreateObject("ADODB.Connection")
strCnxn = "Provider='sqloledb';Data Source=" & _
Request.ServerVariables("SERVER_NAME") & ";" & _
"Integrated Security='SSPI';Initial Catalog='Northwind';"
Cnxn.Open strCnxn
' create and open Recordset using object refs
Set rsCustomers = Server.CreateObject("ADODB.Recordset")
strSQLCustomers = "Customers"
rsCustomers.ActiveConnection = Cnxn
rsCustomers.CursorLocation = adUseClient
rsCustomers.CursorType = adOpenKeyset
rsCustomers.LockType = adLockOptimistic
rsCustomers.Source = strSQLCustomers
rsCustomers.Open
rsCustomers.MoveFirst
rsCount = rsCustomers.RecordCount
rsFirst = rsCustomers("CompanyName")
rsCustomers.MoveLast
rsLast = rsCustomers("CompanyName")
' create clone
Set rsClone = rsCustomers.Clone
rsClone.MoveFirst
CloneCount = rsClone.RecordCount
CloneFirst = rsClone("CompanyName")
rsClone.MoveLast
CloneLast = rsClone("CompanyName")
%>
<!-- Display Results -->
<H3>There Are <%=rsCount%> Records in the original recordset</H3>
<H3>The first record is <%=rsFirst%> and the last record is <%=rsLast%></H3>
<BR><HR>
<H3>There Are <%=CloneCount%> Records in the original recordset</H3>
<H3>The first record is <%=CloneFirst%> and the last record is <%=CloneLast%></H3>
<BR><HR>
<H4>Location of OLEDB Database</H4>
<%
' Show location of DSN data source
Response.Write(Cnxn)
' Clean up
If rsCustomers.State = adStateOpen then
rsCustomers.Close
End If
If rsClone.State = adStateOpen then
rsClone.Close
End If
If Cnxn.State = adStateOpen then
Cnxn.Close
End If
Set rsCustomers = Nothing
Set rsClone = Nothing
Set Cnxn = Nothing
%>
</BODY>
</HTML>
<!-- EndCloneVBS -->