Clear Active Analysis Layer Snippet

///<summary>Clears all input/output features previously stored in the currently active analysis layer.</summary>
///   
///<param name="naWindow">An INAWindow interface.</param>
///<param name="activeView">An IActiveView interface.</param>
///   
///<remarks></remarks>
public static void ClearActiveAnalysisLayer(ESRI.ArcGIS.NetworkAnalystUI.INAWindow naWindow, ESRI.ArcGIS.Carto.IActiveView activeView)
{
  ESRI.ArcGIS.NetworkAnalyst.INALayer naLayer=naWindow.ActiveAnalysis;
  ESRI.ArcGIS.NetworkAnalyst.INAContext naContext=naLayer.Context;
  ESRI.ArcGIS.NetworkAnalyst.INamedSet namedSet=naContext.NAClasses;

  naWindow.DelayEvents(null, true);
  naWindow.DelayWindowUpdates(true);

  ESRI.ArcGIS.NetworkAnalyst.INAClass naClass;
  for (System.Int32 i=0; i < namedSet.Count; i++)
  {
    System.Object theObject=namedSet.get_Item(i);
    naClass=theObject as ESRI.ArcGIS.NetworkAnalyst.INAClass;
    naClass.DeleteAllRows();
  }

  naWindow.DelayWindowUpdates(false);
  naWindow.DelayEvents(null, false);
  activeView.Refresh();
}

'''<summary>Clears all input/output features previously stored in the currently active analysis layer.</summary>
'''   
'''<param name="naWindow">An INAWindow interface.</param>
'''<param name="activeView">An IActiveView interface.</param>
'''   
'''<remarks></remarks>
Public Shared Sub ClearActiveAnalysisLayer(ByVal naWindow As ESRI.ArcGIS.NetworkAnalystUI.INAWindow, ByVal activeView As ESRI.ArcGIS.Carto.IActiveView)

  Dim naLayer As ESRI.ArcGIS.NetworkAnalyst.INALayer=naWindow.ActiveAnalysis
  Dim naContext As ESRI.ArcGIS.NetworkAnalyst.INAContext=naLayer.Context
  Dim namedSet As ESRI.ArcGIS.NetworkAnalyst.INamedSet=naContext.NAClasses

  naWindow.DelayEvents(Nothing, True)
  naWindow.DelayWindowUpdates(True)

  Dim naClass As ESRI.ArcGIS.NetworkAnalyst.INAClass
  Dim i As System.Int32=0

  For i=0 To namedSet.Count - 1

    Dim theObject As System.Object=namedSet.Item(i)
    naClass=CType(theObject, ESRI.ArcGIS.NetworkAnalyst.INAClass) ' Explicit Cast
    naClass.DeleteAllRows()

  Next

  naWindow.DelayWindowUpdates(False)
  naWindow.DelayEvents(Nothing, False)
  activeView.Refresh()

End Sub