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Move-Methode (Beispiel) (VBScript)

Gilt für: Access 2013, Office 2013

In diesem Beispiel wird Move-Methode verwendet, um den Zeiger für den Datensatz auf der Grundlage der Benutzereingabe zu positionieren.

Verwenden Sie das folgende Beispiel in einer Active Server Page-Datei (ASP).

Use Find to locate the file Adovbs.inc and place it in the directory you plan to use. Cut and paste the following code to Notepad or another text editor, and save it as MoveVBS.asp. You can view the result in any browser.

Versuchen Sie, einen Buchstaben oder einen Nicht-Ganzzahl-Wert ein, um die Behebung des Fehlers anzuzeigen.

 
<!-- BeginMoveVBS --> 
<%@ Language=VBScript %> 
<%' use this meta tag instead of adovbs.inc%> 
<!--METADATA TYPE="typelib" uuid="00000205-0000-0010-8000-00AA006D2EA4" --> 
<HTML> 
<HEAD> 
<TITLE>ADO Move Methods</TITLE> 
<STYLE> 
<!-- 
BODY { 
   font-family: "MS SANS SERIF",sans-serif; 
    } 
.thead1 { 
   background-color: #008080;  
   font-family: 'Arial Narrow','Arial',sans-serif;  
   font-size: x-small; 
   color: white; 
   } 
.tbody {  
   text-align: center; 
   background-color: #f7efde; 
   font-family: 'Arial Narrow','Arial',sans-serif;  
   font-size: x-small; 
    } 
--> 
</STYLE> 
</HEAD> 
<BODY>  
<H3>ADO Move Methods</H3> 
<% ' to integrate/test this code replace the  
   ' Data Source value in the Connection string%> 
<%  
    ' connection and recordset variables 
    Dim Cnxn, strCnxn 
    Dim rsCustomers, strSQLCustomers 
 
    ' 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 
 
    'Check number of user moves this session and increment by entry 
    Session("Clicks") = Session("Clicks") + Request.Form("MoveAmount") 
    Clicks = Session("Clicks") 
    ' Move to last known recordset position plus amount passed  
    rsCustomers.Move CInt(Clicks) 
 
    'Error Handling 
    If rsCustomers.EOF Then 
        Session("Clicks") = rsCustomers.RecordCount 
        Response.Write "This is the Last Record" 
        rsCustomers.MoveLast 
    ElseIf rsCustomers.BOF Then 
        Session("Clicks") = 1 
        rsCustomers.MoveFirst 
        Response.Write "This is the First Record" 
    End If 
    %> 
 
    <H3>Current Record Number is <BR> 
    <%  
    If Session("Clicks") = 0 Then Session("Clicks") = 1 
    Response.Write(Session("Clicks") )%> of <%=rsCustomers.RecordCount%></H3> 
    <HR> 
 
 
    <TABLE COLSPAN=8 CELLPADDING=5 BORDER=0> 
 
    <!-- BEGIN column header row for Customer Table--> 
 
    <TR CLASS=thead1> 
       <TD>Company Name</TD> 
       <TD>Contact Name</TD> 
       <TD>City</TD> 
    </TR> 
        <% 'display%> 
        <TR CLASS=tbody> 
          <TD> <%= rsCustomers("CompanyName")%> </TD> 
          <TD> <%= rsCustomers("ContactName")%></TD> 
          <TD> <%= rsCustomers("City")%> </TD> 
        </TR>  
    </TABLE> 
 
    <HR> 
    <Input Type=Button Name=cmdDown  Value="&lt;  "> 
    <Input Type=Button Name=cmdUp Value=" &gt;"> 
    <H5>Click Direction Arrows for Previous or Next Record 
    <BR> <BR> 
 
    <FORM Method = Post Action="MoveVbs.asp" Name=Form> 
    <TABLE> 
        <TR> 
           <TD><Input Type="Button" Name=Move Value="Move Amount "></TD> 
           <TD></TD> 
           <TD><Input Type="Text" Size="4" Name="MoveAmount" Value=0></TD> 
        <TR> 
    </TABLE> 

    Click Move Amount to use Move Method<br> 
    Enter Number of Records to Move + or - </H5>    </FORM> 
</BODY> 
 
<Script Language = "VBScript"> 
 
Sub Move_OnClick 
   ' Make sure move value entered is an integer 
   If IsNumeric(Document.Form.MoveAmount.Value)Then 
      Document.Form.MoveAmount.Value = CInt(Document.Form.MoveAmount.Value) 
      Document.Form.Submit 
   Else 
      MsgBox "You Must Enter a Number", ,"ADO-ASP Example" 
      Document.Form.MoveAmount.Value = 0 
   End If 
End Sub 
 
Sub cmdDown_OnClick 
   Document.Form.MoveAmount.Value = -1 
   Document.Form.Submit 
End Sub 
 
Sub cmdUp_OnClick 
   Document.Form.MoveAmount.Value = 1 
   Document.Form.Submit 
End Sub 
</Script> 
 
<% 
    ' clean up 
    If rsCustomers.State = adStateOpen then 
        rsCustomers.Close 
    End If 
    If Cnxn.State = adStateOpen then 
        Cnxn.Close 
    End If 
%> 
</HTML> 
<!-- EndMoveVBS -->
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