SaveLayerFileCmd.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 System; using System.Drawing; using System.Windows.Forms; using System.Runtime.InteropServices; using ESRI.ArcGIS.ADF.BaseClasses; using ESRI.ArcGIS.ADF.CATIDs; using ESRI.ArcGIS.Controls; using ESRI.ArcGIS.Carto; namespace MapControlSaveLayerFile { /// <summary> /// This command demonstrates saving of a layer file in an ArcGIS Engine application /// </summary> [Guid("294563e7-b475-43db-a2d1-a6b5f95c7113")] [ClassInterface(ClassInterfaceType.None)] [ProgId("MapControlSaveLayerFile.SaveLayerFileCmd")] public sealed class SaveLayerFileCmd : BaseCommand { #region COM Registration Function(s) [ComRegisterFunction()] [ComVisible(false)] static void RegisterFunction(Type registerType) { // Required for ArcGIS Component Category Registrar support ArcGISCategoryRegistration(registerType); // // TODO: Add any COM registration code here // } [ComUnregisterFunction()] [ComVisible(false)] static void UnregisterFunction(Type registerType) { // Required for ArcGIS Component Category Registrar support ArcGISCategoryUnregistration(registerType); // // TODO: Add any COM unregistration code here // } #region ArcGIS Component Category Registrar generated code /// <summary> /// Required method for ArcGIS Component Category registration - /// Do not modify the contents of this method with the code editor. /// </summary> private static void ArcGISCategoryRegistration(Type registerType) { string regKey = string.Format("HKEY_CLASSES_ROOT\\CLSID\\{{{0}}}", registerType.GUID); MxCommands.Register(regKey); ControlsCommands.Register(regKey); } /// <summary> /// Required method for ArcGIS Component Category unregistration - /// Do not modify the contents of this method with the code editor. /// </summary> private static void ArcGISCategoryUnregistration(Type registerType) { string regKey = string.Format("HKEY_CLASSES_ROOT\\CLSID\\{{{0}}}", registerType.GUID); MxCommands.Unregister(regKey); ControlsCommands.Unregister(regKey); } #endregion #endregion private IHookHelper m_hookHelper = null; public SaveLayerFileCmd() { base.m_category = ".NET Samples"; base.m_caption = "Create Layer File"; base.m_message = "Save the current layer as a layer file"; base.m_toolTip = "Create As Layer File"; base.m_name = "MapControlSaveLayerFile_SaveLayerFileCmd"; try { string bitmapResourceName = GetType().Name + ".bmp"; base.m_bitmap = new Bitmap(GetType(), bitmapResourceName); } catch (Exception ex) { System.Diagnostics.Trace.WriteLine(ex.Message, "Invalid Bitmap"); } } #region Overriden Class Methods /// <summary> /// Occurs when this command is created /// </summary> /// <param name="hook">Instance of the application</param> public override void OnCreate(object hook) { if (hook == null) return; try { m_hookHelper = new HookHelperClass(); m_hookHelper.Hook = hook; if (m_hookHelper.ActiveView == null) m_hookHelper = null; } catch { m_hookHelper = null; } if (m_hookHelper == null) base.m_enabled = false; else base.m_enabled = true; } /// <summary> /// Occurs when this command is clicked /// </summary> public override void OnClick() { //need to get the layer from the custom-property of the map if (null == m_hookHelper) return; //get the mapControl hook object hook = null; if (m_hookHelper.Hook is IToolbarControl2) { hook = ((IToolbarControl2)m_hookHelper.Hook).Buddy; } else { hook = m_hookHelper.Hook; } //get the custom property from which is supposed to be the layer to be saved object customProperty = null; IMapControl3 mapControl = null; if (hook is IMapControl3) { mapControl = (IMapControl3)hook; customProperty = mapControl.CustomProperty; } else return; if (null == customProperty || !(customProperty is ILayer)) return; //ask the user to set a name for the new layer file SaveFileDialog saveFileDialog = new SaveFileDialog(); saveFileDialog.Filter = "Layer File|*.lyr|All Files|*.*"; saveFileDialog.Title = "Create Layer File"; saveFileDialog.RestoreDirectory = true; saveFileDialog.FileName = System.IO.Path.Combine(saveFileDialog.InitialDirectory, ((ILayer)customProperty).Name + ".lyr"); //get the layer name from the user DialogResult dr = saveFileDialog.ShowDialog(); if (saveFileDialog.FileName != "" && dr == DialogResult.OK) { if (System.IO.File.Exists(saveFileDialog.FileName)) { //try to delete the existing file System.IO.File.Delete(saveFileDialog.FileName); } //create a new LayerFile instance ILayerFile layerFile = new LayerFileClass(); //create a new layer file layerFile.New(saveFileDialog.FileName); //attach the layer file with the actual layer layerFile.ReplaceContents((ILayer)customProperty); //save the layer file layerFile.Save(); //ask the user whether he'd like to add the layer to the map if (DialogResult.Yes == MessageBox.Show("Would you like to add the layer to the map?", "Message", MessageBoxButtons.YesNo, MessageBoxIcon.Question)) { mapControl.AddLayerFromFile(saveFileDialog.FileName, 0); } } } #endregion } }