ISnapAgentCategory Interface

The following example queries each snap agent that is turned on and prints its category name into the immediate window. 

public void PrintSnapAgentCategories()
{
      //get editor extension
      UID editorUID = new UIDClass();
      editorUID.Value = "esriEditor.Editor";
      IEditor editor = m_application.FindExtensionByCLSID(editorUID) as IEditor;
      //get snappingWIndow
      UID snapWindowUID = new UIDClass();
      snapWindowUID.Value = "esriEditor.SnappingWindow";
      ISnappingWindow snapWindow = editor.FindExtension(snapWindowUID) as ISnappingWindow;
      ISnapEnvironment snapEnvironment = editor as ISnapEnvironment;
      
      //The editor's snapping logic uses bitwise combination of HitPartTypes.
      //0 = PartNone, 1= partVertex, 4 = partBoundary, 16 = partEndpoint
      //So 5 would bevtest partVertex and partBoundary and 21 would be all of
      //the ones above
        
      //Loop through the snap environment
      for(int i = 0; i < snapEnvironment.SnapAgentCount; i++)
      {
      ISnapAgent snapAgent = snapEnvironment.get_SnapAgent(i);
        if (!(snapAgent is IFeatureSnapAgent))
        {
            ISnapAgentCategory snapAgentCategory = snapAgent as ISnapAgentCategory;
            System.Windows.Forms.MessageBox.Show("SnapAgent Name " + snapAgentCategory.Category);
        }
      }
     
}