Пример метода Resync (Visual Basic)Resync Method Example (VB)

В этом примере демонстрируется использование метода Resync для обновления данных в статическом наборе записей.This example demonstrates using the Resync method to refresh data in a static recordset.

    'To integrate this code  
    'replace the data source and initial catalog values  
    'in the connection strings  
Public Sub Main()  
    On Error GoTo ErrorHandler  
    'connection and recordset variables  
    Dim Cnxn As ADODB.Connection  
    Dim rstTitles As ADODB.Recordset  
    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 using object refs to set properties  
    ' that allow for updates to the database  
    Set rstTitles = New ADODB.Recordset  
    Set rstTitles.ActiveConnection = Cnxn  
    rstTitles.CursorType = adOpenKeyset  
    rstTitles.LockType = adLockOptimistic  
    strSQLTitles = "titles"  
    rstTitles.Open strSQLTitles  
    'rstTitles.Open strSQLTitles, Cnxn, adOpenKeyset, adLockPessimistic, adCmdTable  
    'the above line of code passes the same refs as the object refs listed above  
    ' Change the type of the first title in the recordset  
    rstTitles!Type = "database"  
    ' Display the results of the change  
    MsgBox "Before resync: " & vbCr & vbCr & _  
        "Title - " & rstTitles!Title & vbCr & _  
        "Type - " & rstTitles!Type  
    ' Resync with database and redisplay results  
    MsgBox "After resync: " & vbCr & vbCr & _  
        "Title - " & rstTitles!Title & vbCr & _  
        "Type - " & rstTitles!Type  
    ' clean up  
    Set rstTitles = Nothing  
    Set Cnxn = Nothing  
    Exit Sub  
    ' clean up  
    If Not rstTitles Is Nothing Then  
        If rstTitles.State = adStateOpen Then  
        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  

См. такжеSee Also

Объект Recordset (ADO) Recordset Object (ADO)
Метод ResyncResync Method