ArcObjects Library Reference

Get Active Analysis Layer Snippet

Gets the active analysis layer from the Network Analyst extension.

[C#]


///<summary>Gets the active analysis layer from the Network Analyst extension.</summary>
/// 
///<param name="networkAnalystExtension">An INetworkAnalystExtension interface.</param>
/// 
///<returns>An INALayer3 interface.</returns>
/// 
///<remarks></remarks>
public ESRI.ArcGIS.NetworkAnalyst.INALayer3 GetActiveAnalysisLayer(ESRI.ArcGIS.NetworkAnalystUI.INetworkAnalystExtension networkAnalystExtension)
{

  ESRI.ArcGIS.NetworkAnalystUI.INAWindow naWindow = networkAnalystExtension.NAWindow;
  ESRI.ArcGIS.NetworkAnalyst.INALayer naLayer = naWindow.ActiveAnalysis;
  ESRI.ArcGIS.NetworkAnalyst.INALayer3 naLayer3 = naLayer as ESRI.ArcGIS.NetworkAnalyst.INALayer3; // Dynamic Cast

  return naLayer3;

}

[Visual Basic .NET]


'''<summary>Gets the active analysis layer from the Network Analyst extension.</summary>
''' 
'''<param name="networkAnalystExtension">An INetworkAnalystExtension interface.</param>
''' 
'''<returns>An INALayer3 interface.</returns>
''' 
'''<remarks></remarks>
Public Function GetActiveAnalysisLayer(ByVal networkAnalystExtension As ESRI.ArcGIS.NetworkAnalystUI.INetworkAnalystExtension) As ESRI.ArcGIS.NetworkAnalyst.INALayer3

  Dim naWindow As ESRI.ArcGIS.NetworkAnalystUI.INAWindow = networkAnalystExtension.NAWindow
  Dim naLayer As ESRI.ArcGIS.NetworkAnalyst.INALayer = naWindow.ActiveAnalysis
  Dim naLayer3 As ESRI.ArcGIS.NetworkAnalyst.INALayer3 = TryCast(naLayer, ESRI.ArcGIS.NetworkAnalyst.INALayer3) ' Dynamic Cast

  Return naLayer3

End Function

Additional Requirements

The code in this document requires the following References added to the Visual Studio project:
ESRI.ArcGIS.NetworkAnalyst
ESRI.ArcGIS.NetworkAnalystUI