ScaleThresholds.cs
// Copyright 2012 ESRI // // All rights reserved under the copyright laws of the United States // and applicable international laws, treaties, and conventions. // // You may freely redistribute and use this sample code, with or // without modification, provided you include the original copyright // notice and use restrictions. // // See the use restrictions. // using ESRI.ArcGIS.ADF.BaseClasses; using ESRI.ArcGIS.Carto; using ESRI.ArcGIS.Controls; using ESRI.ArcGIS.SystemUI; namespace ContextMenu { public class ScaleThresholds : BaseCommand, ICommandSubType { private IMapControl3 m_mapControl; private long m_subType; public ScaleThresholds() { } public override void OnClick() { ILayer layer = (ILayer) m_mapControl.CustomProperty; if (m_subType == 1) layer.MaximumScale = m_mapControl.MapScale; if (m_subType == 2) layer.MinimumScale = m_mapControl.MapScale; if (m_subType == 3) { layer.MaximumScale = 0; layer.MinimumScale = 0; } m_mapControl.Refresh(esriViewDrawPhase.esriViewGeography,null,null); } public override void OnCreate(object hook) { m_mapControl = (IMapControl3) hook; } public int GetCount() { return 3; } public void SetSubType(int SubType) { m_subType = SubType; } public override string Caption { get { if (m_subType == 1) return "Set Maximum Scale"; else if (m_subType == 2) return "Set Minimum Scale"; else return "Remove Scale Thresholds"; } } public override bool Enabled { get { bool enabled = true; ILayer layer = (ILayer) m_mapControl.CustomProperty; if (m_subType == 3) { if ((layer.MaximumScale == 0) & (layer.MinimumScale == 0)) enabled = false; } return enabled; } } } }