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Clone Method Example (VBScript)

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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 -->

See Also

Clone Method (ADO)
Recordset Object (ADO)