MDAC 2.5 SDK - ADO


 

Source Property Example (VB)

See Also

This example demonstrates the Source property by opening three Recordset objects based on different data sources.

Public Sub SourceX()

   Dim cnn1 As ADODB.Connection
   Dim rstTitles As ADODB.Recordset
   Dim rstPublishers As ADODB.Recordset
   Dim rstPublishersDirect As ADODB.Recordset
   Dim rstTitlesPublishers As ADODB.Recordset
   Dim cmdSQL As ADODB.Command
   Dim strCnn As String
   Dim strSQL As String

   ' Open a connection.
   Set cnn1 = New ADODB.Connection
   strCnn = "Provider=sqloledb;" & _
      "Data Source=srv;Initial Catalog=Pubs;User Id=sa;Password=; "
   cnn1.Open strCnn
   
   ' Open a recordset based on a command object.
   Set cmdSQL = New ADODB.Command
   Set cmdSQL.ActiveConnection = cnn1
   cmdSQL.CommandText = "Select title, type, pubdate " & _
      "FROM Titles ORDER BY title"
   Set rstTitles = cmdSQL.Execute()
   
   ' Open a recordset based on a table.
   Set rstPublishers = New ADODB.Recordset
   rstPublishers.Open "publishers", strCnn, , , adCmdTable
   
   ' Open a recordset based on a table.
   Set rstPublishersDirect = New ADODB.Recordset
   rstPublishersDirect.Open "publishers", strCnn, , , adCmdTableDirect
   

   ' Open a recordset based on an SQL string.
   Set rstTitlesPublishers = New ADODB.Recordset
   strSQL = "SELECT title_ID AS TitleID, title AS Title, " & _
      "publishers.pub_id AS PubID, pub_name AS PubName " & _
      "FROM publishers INNER JOIN Titles " & _
      "ON publishers.pub_id = Titles.pub_id " & _
      "ORDER BY Title"
   rstTitlesPublishers.Open strSQL, strCnn, , , adCmdText

   ' Use the Source property to display the source of each recordset.
   MsgBox "rstTitles source: " & vbCr & _
      rstTitles.Source & vbCr & vbCr & _
      "rstPublishers source: " & vbCr & _
      rstPublishers.Source & vbCr & vbCr & _
      "rstPublishersDirect source: " & vbCr & _
      rstPublishersDirect.Source & vbCr & vbCr & _
      "rstTitlesPublishers source: " & vbCr & _
      rstTitlesPublishers.Source

   rstTitles.Close
   rstPublishers.Close
   rstTitlesPublishers.Close
   cnn1.Close

End Sub