MDAC 2.5 SDK - ADO

Append and CreateParameter Methods Example (VB)

See Also

This example uses the Append and CreateParameter methods to execute a stored procedure with an input parameter.

Public Sub AppendX()

   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

   ' Open connection.
   Set cnn1 = New ADODB.Connection
   strCnn = "Provider=sqloledb;" & _
      "Data Source=srv;Initial Catalog=Pubs;User Id=sa;Password=; "
   cnn1.Open strCnn
   cnn1.CursorLocation = adUseClient
      
   ' Open command object with one parameter.
   Set cmdByRoyalty = New ADODB.Command
   cmdByRoyalty.CommandText = "byroyalty"
   cmdByRoyalty.CommandType = adCmdStoredProc
   
   ' Get parameter value and append parameter.
   intRoyalty = Trim(InputBox("Enter royalty:"))
   Set prmByRoyalty = cmdByRoyalty.CreateParameter("percentage", _
      adInteger, adParamInput)
   cmdByRoyalty.Parameters.Append prmByRoyalty
   prmByRoyalty.Value = intRoyalty

   ' Create recordset by executing the command.
   Set cmdByRoyalty.ActiveConnection = cnn1
   Set rstByRoyalty = cmdByRoyalty.Execute
   
   ' Open the Authors table to get author names for display.
   Set rstAuthors = New ADODB.Recordset
   rstAuthors.Open "Authors", cnn1, , , 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

   rstByRoyalty.Close
   rstAuthors.Close
   cnn1.Close

End Sub