VB.NET Tutorial Code 4: Performing Inference in Influence Diagrams

Public Sub InferenceWithInfluenceDiagram()
 Try
   ' Loading and updating the influence diagram: 
   Dim net As new Network()
   net.ReadFile("tutorial_b.xdsl")
   net.UpdateBeliefs()
   
   ' Getting the handle and the name of value indexing parent (decision node):
   Dim aValueIndexingParents() As Integer = net.GetValueIndexingParents("Gain")
   Dim nodeDecision As Integer = aValueIndexingParents(0)
   Dim decisionName As String = net.GetNodeName(nodeDecision)
   
   ' Displaying the possible expected values:
   Console.WriteLine("These are the expected utilities:")
   For i As Integer = 0 To net.GetOutcomeCount(nodeDecision) - 1
     Dim parentOutcomeId As String = net.GetOutcomeId(nodeDecision, i)
     Dim expectedUtility As Double = net.GetNodeValue("Gain")(i)
     
     Console.Write("  - """ + decisionName + """ = " + parentOutcomeId.ToString() + ": ")
     Console.WriteLine("Expected Utility = " + expectedUtility.ToString())
   Next
 Catch e As SmileException
   Console.WriteLine(e.Message)
 End Try
End Sub