AbsolutePosition 和 CursorLocation 属性应用实例(VB)

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本范例演示 AbsolutePosition 属性如何跟踪循环的进度。该循环用于枚举 Recordset 中的所有记录。范例通过将游标设置为客户游标，用 CursorLocation 属性来启用 AbsolutePosition 属性。

Public Sub AbsolutePositionX()

    Dim rstEmployees As ADODB.Recordset
    Dim strCnn As String
    Dim strMessage As String

    ' Open a recordset for the Employee table
    ' using a client cursor.
    strCnn = "Provider=sqloledb;" & _
        "Data Source=srv;Initial Catalog=Pubs;User Id=sa;Password=; "
    Set rstEmployees = New ADODB.Recordset
    ' Use client cursor to enable AbsolutePosition property.
    rstEmployees.CursorLocation = adUseClient
    rstEmployees.Open "employee", strCnn, , , adCmdTable
   
    ' Enumerate Recordset.
    Do While Not rstEmployees.EOF
        ' Display current record information.
        strMessage = "Employee: " & rstEmployees!lName & vbCr & _
            "(record " & rstEmployees.AbsolutePosition & _
            " of " & rstEmployees.RecordCount & ")"
        If MsgBox(strMessage, vbOKCancel) = vbCancel _
            Then Exit Do
        rstEmployees.MoveNext
    Loop

    rstEmployees.Close

End Sub

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