ArcEngine——導出所選圖層

 GeoDataExport 請參考博文https://blog.csdn.net/RicardoMTan/article/details/102799403

/***************************
 Write by Chn gzGISer Tst
 CSDN blog Ricardo.M.Tan
 **************************/
using System;
using System.Runtime.InteropServices;
using ESRI.ArcGIS.ADF.BaseClasses;
using ESRI.ArcGIS.ADF.CATIDs;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.Carto;
using System.Windows.Forms;
using ESRI.ArcGIS.DataSourcesFile;
using ESRI.ArcGIS.Geodatabase;
using Chn.SpatialDataProcessing.GeoDataHelper.Processing;

namespace Chn.SpatialDataProcessing.Command {
    /// <summary>
    /// Command that works in ArcMap/Map/PageLayout
    /// </summary>
    [Guid("29e28108-a50d-41b2-92dd-3055250afc34")]
    [ClassInterface(ClassInterfaceType.None)]
    [ProgId("Chn.SpatialDataProcessing.Command.ExportSelectedFeatureCmd")]
    public sealed class ExportSelectedFeatureCmd : 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;
        IMapControl3 m_mapControl3 = null;
        IFeatureLayer m_currentLayer = null;
        /// <summary>
        /// 導出所選圖層
        /// </summary>
        public ExportSelectedFeatureCmd() {
            //
            // TODO: Define values for the public properties
            //
            base.m_category = "通用工具"; //localizable text
            base.m_caption = "導出所選要素";  //localizable text 
            base.m_message = "導出所選要素";  //localizable text
            base.m_toolTip = "導出所選要素";  //localizable text
            base.m_name = "ExportSelectedFeature";   //unique id, non-localizable (e.g. "MyCategory_MyCommand")

            try {
                base.m_bitmap = Properties.Resources.LayerExportData16;
            } catch (Exception ex) {
                System.Diagnostics.Trace.WriteLine(ex.Message, "Invalid Bitmap");
            }
        }

        #region Overridden 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;

            m_hookHelper = new HookHelperClass();
            m_hookHelper.Hook = hook;
            if (m_hookHelper.Hook is IMapControl3) {
                m_mapControl3 = m_hookHelper.Hook as IMapControl3;
                if (m_mapControl3.CustomProperty is IFeatureLayer) {
                    m_currentLayer = m_mapControl3.CustomProperty as IFeatureLayer;
                    IFeatureSelection pSelection = m_currentLayer as IFeatureSelection;
                    ISelectionSet pSelectionSet = pSelection.SelectionSet;
                    if (pSelectionSet.Count == 0) {
                        m_enabled = false;
                    } else {
                        m_enabled = true;
                    }
                } else {
                    m_enabled = false;
                }
            } else {
                m_enabled = false;
            }
        }

        /// <summary>
        /// Occurs when this command is clicked
        /// </summary>
        public override void OnClick() {
            FolderBrowserDialog folder = new FolderBrowserDialog() {
                Description = "選擇導出路徑"
            };
            if (folder.ShowDialog() == DialogResult.OK) {
                IWorkspaceFactory outputWorkspaceFactory = new ShapefileWorkspaceFactoryClass();
                IWorkspace outputWorkspace = outputWorkspaceFactory.OpenFromFile(folder.SelectedPath, 0);
                m_currentLayer = m_mapControl3.CustomProperty as IFeatureLayer;
                if (m_currentLayer == null) return;
                GeoDataExport geodataExport = new GeoDataExport();
                geodataExport.Export(m_currentLayer, outputWorkspace);
            }
        }

        #endregion
    }
}