ADO 教程 (VB)

目录

Public Sub main()Dim conn As New ADODB.Connection
Dim cmd As New ADODB.Command
Dim rs As New ADODB.Recordset
‘步骤 1
conn.Open "DSN=pubs;uid=sa;pwd=;database=pubs"
‘步骤 2
Set cmd.ActiveConnection = conn
cmd.CommandText = "SELECT * from authors"
‘步骤 3
rs.CursorLocation = adUseClient
rs.Open cmd, , adOpenStatic, adLockBatchOptimistic
‘步骤 4
rs("au_lname").Properties("Optimize") = True
rs.Sort = "au_lname"
rs.Filter = "phone LIKE '415 5*'"
rs.MoveFirst
Do While Not rs.EOF
    Debug.Print "Name: " & rs("au_fname") & " "; rs("au_lname") & _
        "Phone: "; rs("phone") & vbCr
    rs("phone") = "777" & Mid(rs("phone"), 5, 11)
    rs.MoveNext
Loop‘步骤 5
conn.BeginTrans‘步骤 6 - A
On Error GoTo ConflictHandler
rs.UpdateBatch
On Error GoTo 0conn.CommitTransExit Sub‘ 步骤 6 - B
ConflictHandler:rs.Filter = adFilterConflictingRecords
rs.MoveFirst
Do While Not rs.EOF
    Debug.Print "Conflict: Name: " & rs("au_fname"); " " & rs("au_lname")
    rs.MoveNext
Loop
conn.Rollback
Resume NextEnd Sub

Visual Basic 教程到此结束。

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