Public Function SelectSource( _
   ByVal sourceName As String _
) As DialogResult

Dim instance As TwainSession
Dim sourceName As String
Dim value As DialogResult
 
value = instance.SelectSource(sourceName)

public DialogResult SelectSource( 
   string sourceName
)

public:
DialogResult SelectSource( 
   String^ sourceName
) 

Public Sub SelectSourceExample(ByVal parent As IWin32Window)
   Dim session As TwainSession = New TwainSession()
   session.Startup(parent, "manufacturer", "productFamily", "version", "application", TwainStartupFlags.None)

   If session.SelectSource(String.Empty) <> DialogResult.OK Then
      MessageBox.Show("Error Selecting Source")
   End If

   session.Shutdown()
End Sub

public void SelectSourceExample(IWin32Window parent)
{
   TwainSession session = new TwainSession();
   session.Startup(parent, "manufacturer", "productFamily", "version", "application", TwainStartupFlags.None);

   if (session.SelectSource(string.Empty) != DialogResult.OK)
      MessageBox.Show("Error Selecting Source");

   session.Shutdown();
}