ActiveConnection、CommandText、CommandTimeout、CommandType、Size 和 Direction

本范例使用 ActiveConnection、CommandText、CommandTimeout、CommandType、Size 和 Direction 属性来执行存储过程。

Public Sub ActiveConnectionX()

    Dim cnn1 As ADODB.Connection
    Dim cmdByRoyalty As ADODB.Command
    Dim prmByRoyalty As ADODB.Parameter
    Dim rstByRoyalty As ADODB.Recordset
    Dim rstAuthors As ADODB.Recordset
    Dim intRoyalty As Integer
    Dim strAuthorID As String
    Dim strCnn As String

    ' Define a command object for a stored procedure.
    Set cnn1 = New ADODB.Connection
    strCnn = "Provider=sqloledb;" & _
        "Data Source=srv;Initial Catalog=Pubs;User Id=sa;Password=; "
    cnn1.Open strCnn
    Set cmdByRoyalty = New ADODB.Command
    Set cmdByRoyalty.ActiveConnection = cnn1
    cmdByRoyalty.CommandText = "byroyalty"
    cmdByRoyalty.CommandType = adCmdStoredProc
    cmdByRoyalty.CommandTimeout = 15
       
    ' Define the stored procedure's input parameter.
    intRoyalty = Trim(InputBox( _
        "Enter royalty:"))
    Set prmByRoyalty = New ADODB.Parameter
    prmByRoyalty.Type = adInteger
    prmByRoyalty.Size = 3
    prmByRoyalty.Direction = adParamInput
    prmByRoyalty.Value = intRoyalty
    cmdByRoyalty.Parameters.Append prmByRoyalty
 
    ' Create a recordset by executing the command.
    Set rstByRoyalty = cmdByRoyalty.Execute()
       
    ' Open the Authors table to get author names for display.
    Set rstAuthors = New ADODB.Recordset
    rstAuthors.Open "Authors", strCnn, , , adCmdTable
   
    ' Print current data in the recordset, adding
    ' author names from Authors table.
    Debug.Print "Authors with " & intRoyalty & _
        " percent royalty"
    Do While Not rstByRoyalty.EOF
        strAuthorID = rstByRoyalty!au_id
        Debug.Print , rstByRoyalty!au_id & ", ";
        rstAuthors.Filter = "au_id = '" & strAuthorID & "'"
        Debug.Print rstAuthors!au_fname & " " & _
            rstAuthors!au_lname
        rstByRoyalty.MoveNext
    Loop