[Visual Basic 6.0]
This example demonstrates how to use the properties and methods on the IUtilityNetworkAnalysis interface g_pApplication is a variable of type IApplication holding a valid reference to the ArcMap application 
Dim pUtilityNetworkAnalysisExt As esriEditorExt.IUtilityNetworkAnalysisExt 
Dim pUID As New esriSystem.UID 
Dim blnEnableSetFlowDirection As Boolean 

'set the UID for the extension 
pUID = "esriEditorExt.UtilityNetworkAnalysisExt" 
'obtain a reference to the extension by querying the application 
Set pUtilityNetworkAnalysisExt = g_pApplication.FindExtensionByCLSID(pUID) 

With pUtilityNetworkAnalysisExt 

'determine if the flow direction can be set for the current network 
blnEnableSetFlowDirection = .EnableSetFlowDirection 

End With 

[Visual Basic .NET, C#, C++]
No example is available for Visual Basic .NET, C#, or C++. To view a Visual Basic 6.0 example, click the Language Filter button in the upper-left corner of the page.