NextRecordset 方法示例 (VB)

此示例使用 NextRecordset 方法查看记录集中的数据，该记录集使用一个由三个单独的 SELECT 语句组成的复合命令语句。

'BeginNextRecordsetVB  
  
    'To integrate this code  
    'replace the data source and initial catalog values  
    'in the connection string  
  
Public Sub Main()  
    On Error GoTo ErrorHandler  
  
    ' connection and recordset variables  
    Dim rstCompound As ADODB.Recordset  
    Dim Cnxn As ADODB.Connection  
    Dim strCnxn As String  
    Dim SQLCompound As String  
  
    Dim intCount As Integer  
  
    ' Open connection  
    Set Cnxn = New ADODB.Connection  
    strCnxn = "Provider='sqloledb';Data Source='MySqlServer';" & _  
        "Initial Catalog='Pubs';Integrated Security='SSPI';"  
    Cnxn.Open strCnxn  
  
    ' Open compound recordset  
    Set rstCompound = New ADODB.Recordset  
    SQLCompound = "SELECT * FROM Authors; " & _  
        "SELECT * FROM stores; " & _  
        "SELECT * FROM jobs"  
    rstCompound.Open SQLCompound, Cnxn, adOpenStatic, adLockReadOnly, adCmdText  
  
    ' Display results from each SELECT statement  
    intCount = 1  
    Do Until rstCompound Is Nothing  
        Debug.Print "Contents of recordset #" & intCount  
  
        Do Until rstCompound.EOF  
            Debug.Print , rstCompound.Fields(0), rstCompound.Fields(1)  
            rstCompound.MoveNext  
        Loop  
  
        Set rstCompound = rstCompound.NextRecordset  
        intCount = intCount + 1  
    Loop  
  
    ' clean up  
    Cnxn.Close  
    Set rstCompound = Nothing  
    Set Cnxn = Nothing  
    Exit Sub  
  
ErrorHandler:  
    ' clean up  
    If Not rstCompound Is Nothing Then  
        If rstCompound.State = adStateOpen Then rstCompound.Close  
    End If  
    Set rstCompound = 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  
'EndNextRecordsetVB  

另请参阅

NextRecordset 方法 (ADO)
记录集对象 (ADO)