Status 属性示例 (Recordset) (VB)

适用于：Access 2013、Office 2013

本示例使用 Status 属性显示在批更新发生之前的批操作中修改的记录。

 
'BeginStatusRecordsetVB 
Public Sub Main() 
 On Error GoTo ErrorHandler 
 
 'To integrate this code 
 'replace the data source and initial catalog values 
 'in the connection string 
 
 ' connection and recordset variables 
 Dim rstTitles As ADODB.Recordset 
 Dim Cnxn As ADODB.Connection 
 Dim strCnxn As String 
 Dim strSQLTitles As String 
 
 ' open connection 
 Set Cnxn = New ADODB.Connection 
 strCnxn = "Provider='sqloledb';Data Source='MySqlServer';" & _ 
 "Initial Catalog='Pubs';Integrated Security='SSPI';" 
 Cnxn.Open strCnxn 
 
 ' open recordset for batch update 
 Set rstTitles = New ADODB.Recordset 
 strSQLTitles = "Titles" 
 rstTitles.Open strSQLTitles, Cnxn, adOpenKeyset, adLockBatchOptimistic, adCmdTable 
 
 ' change the type of psychology titles 
 Do Until rstTitles.EOF 
 If Trim(rstTitles!Type) = "psychology" Then rstTitles!Type = "self_help" 
 rstTitles.MoveNext 
 Loop 
 
 ' display Title ID and status 
 rstTitles.MoveFirst 
 Do Until rstTitles.EOF 
 If rstTitles.Status = adRecModified Then 
 Debug.Print rstTitles!title_id & " - Modified" 
 Else 
 Debug.Print rstTitles!title_id 
 End If 
 rstTitles.MoveNext 
 Loop 
 
 ' clean up 
 rstTitles.Close 
 Cnxn.Close 
 Set rstTitles = Nothing 
 Set Cnxn = Nothing 
 Exit Sub 
 
ErrorHandler: 
 ' clean up 
 If Not rstTitles Is Nothing Then 
 If rstTitles.State = adStateOpen Then 
 ' Cancel the update because this is a demonstration 
 rstTitles.CancelBatch 
 rstTitles.Close 
 End If 
 End If 
 Set rstTitles = Nothing 
 
 If Not Cnxn Is Nothing Then 
 If Cnxn.State = adStateOpen Then Cnxn.Close 
 End If 
 Set Cnxn = Nothing 
 
 If Err <> 0 Then 
 MsgBox Err.Source & "-->" & Err.Description, , "Error" 
 End If 
End Sub 
'EndStatusRecordsetVB