C#+ARCGIS ENGINE开发查找地图元素并高亮显示代码.doc

C#+ARCGIS ENGINE开发查找地图元素并高亮显示代码1
(2008-12-13 13:02:12)
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     这是我帮同学做的一个简单的上机作业，本来是想做查找最短路径和查找地图元素(高亮显示)两个功能的，只是查找最短路径的代码没有填进去，如果哪位朋友需要的话，可以发邮件给我啊(wang_cuntao@)～～

下面是查找地图元素(高亮显示)的主要代码：

//frmMain.cs
// Copyright 2006 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 use restrictions at /arcgis/developerkit/userestrictions.
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.esriSystem;
using ESRI.ArcGIS.SystemUI;
using ESRI.ArcGIS.NetworkAnalyst;

// This is the main form of the application.
namespace NAEngine
{
 /// ary>
        public IMapControl2 pMapControl;

  private System.ComponentModel.Container components = null;
  private System.Windows.Forms.Splitter splitter1;
        private System.Windows.Forms.ComboBox cmbLayers;
  // Context menu objects for NAWindow's context menu
  private SystemWindows.Forms.ContextMenu contextMenu1;
  private System.Windows.Forms.MenuItem miLoadLocations;
  private System.Windows.Forms.MenuItem miClearLocations;
  // ArcGIS Controls on the form
  private ESRI.ArcGIS.Controls.AxMapControl axMapControl1;
  private ESRI.ArcGIS.Controls.AxLicenseControl axLicenseControl1;
  private ESRI.ArcGIS.Controls.AxToolbarControl axToolbarControl1;
  private ESRI.ArcGIS.Controls.AxTOCControl axTOCControl1;
  // Listen for context menu on NAWindow
  private IEngineNAWindowEventsEx_OnContextMenuEventHandler m_onContextMenu;
  // Reference to Network Analyst Environment
  private IEngineNetworkAnalystEnvironment m_naEnv;
  // Reference to NAWindow.  Need to hold on to reference for events to work.
        private IEngineNAWindow m_naWindow;
        private MenuStrip menuStrip1;
        private ToolStripMenuItem oPENToolStripMenuItem;
        private Label label1;
        private Label label2;
  // Menu for our commands on the TOC context menu
  private IToolbarMenu m_menuLayer;
  public frmMain()
  {
   //
   // Required for Windows Form Designer support
   //
   InitializeComponent();

  }
  /// ean up any resources being used.
  ///
  #region Windows Form Designer generated code
  /// ger resources = new System.ComponentModel.ComponentResourceManager(typeof(frmMain));
            this.axMapControl1 = new ESRI.ArcGIS.Controls.AxMapControl();
            this.axLicenseControl1 = new ESRI.ArcGIS.Controls.AxLicenseControl();
            this.axToolbarControl1 = new ESRI.ArcGIS.Controls.AxToolbarControl();
            this.splitter1 = new System.Windows.Forms.Splitter();
            this.axTOCControl1 = new ESRI.ArcGIS.Controls.AxTOCControl();
            this.contextMenu1 = new System.Windows.Forms.ContextMenu();
            this.miLoadLocations = new System.Windows.Forms.MenuItem();
            this.miClearLocations = new System.Windows.Forms.MenuItem();
            this.menuStrip1 = new System.Windows.Forms.MenuStrip();
            this.oPENToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
            this.label1 = new System.Windows.Forms.Label();
            this.label2 = new System.Windows.Forms.Label();
            ((System.ComponentModel.ISupportInitialize)(this.axMapControl1)).BeginInit();
            ((System.ComponentModel.ISupportInitialize)(this.axLicenseControl1)).BeginInit();
            ((System.ComponentModel.ISupportInitialize)(this.axToolbarControl1)).BeginInit();
            ((System.ComponentModel.ISupportInitialize)(this.axTOCControl1)).BeginInit();
            this.menuStrip1.SuspendLayout();
            this.SuspendLayout();
            //
            // axMapControl1
            //
            this.axMapControl1.Dock = System.Windows.Forms.DockStyle.Fill;
            this.axMapControl1.Location = new System.Drawing.Point(246, 52);
            this.axMapControl1.Name = "axMapControl1";
            this.axMapControl1.OcxState = ((System.Windows.Forms.AxHost.State)(resources.GetObject("axMapControl1.OcxState")));
            this.axMapControl1.Size = new System.Drawing.Size(466, 448);
            this.axMapControl1.TabIndex = 2;
            //
            // axLicenseControl1
            //
            this.axLicenseControl1.Enabled = true;
            this.axLicenseControl1.Location = new System.Drawing.Point(797, 0);
            this.axLicenseControl1.Name = "axLicenseControl1";
            this.axLicenseControl1.OcxState = ((System.Windows.Forms.AxHost.State)(resources.GetObject("axLicenseControl1.OcxState")));
            this.axLicenseControl1.Size = new System.Drawing.Size(32, 32);
            this.axLicenseControl1.TabIndex = 1;
            //
            // axToolbarControl1
            //
            this.axToolbarControl1.Dock = System.Windows.Forms.DockStyle.Top;
            this.axToolbarControl1.Location = new System.Drawing.Point(0, 24);
            this.axToolbarControl1.Name = "axToolbarControl1";
            this.axToolbarControl1.OcxState = ((System.Windows.Forms.AxHost.State)(resources.GetObject("axToolbarControl1.OcxState")));
            this.axToolbarControl1.Size = new System.Drawing.Size(712, 28);
            this.axToolbarControl1.TabIndex = 0;
            this.axToolbarControl1.OnMouseDown += new ESRI.ArcGIS.Controls.IToolbarControlEvents_Ax_OnMouseDownEventHandler(this.axToolbarControl1_OnMouseDown);
            //
            // splitter1
            //
            this.splitter1.Location = new System.Drawing.Point(243, 52);
            this.splitter1.Name = "splitter1";
            this.splitter1.Size = new System.Drawing.Size(3, 448);
            this.splitter1.TabIndex = 4;
            this.splitter1.TabStop = false;
            //
            // axTOCControl1
            //
            this.axTOCControl1.Dock = System.Windows.Forms.DockStyle.Left;
            this.axTOCControl1.Location = new System.Drawing.Point(0, 52);
            this.axTOCControl1.Name = "axTOCControl1";
            this.axTOCControl1.OcxState = ((System.Windows.Forms.AxHost.State)(resources.GetObject("axTOCControl1.OcxState")));
            this.axTOCControl1.Size = new System.Drawing.Size(243, 448);
            this.axTOCControl1.TabIndex = 1;
            this.axTOCControl1.OnMouseDown += new ESRI.ArcGIS.Controls.ITOCControlEvents_Ax_OnMouseDownEventHandler(this.axTOCControl1_OnMouseDown);
            //
            // contextMenu1
            //
            this.contextMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
            this.miLoadLocations,
            this.miClearLocations});
            //
            // miLoadLocations
            //
            this.miLoadLocations.Index = 0;
            this.miLoadLocations.Text = "Load Locations...";
            this.miLoadLocations.Click += new System.EventHandler(this.miLoadLocations_Click);
            //
            // miClearLocations
            //
            this.miClearLocations.Index = 1;
            this.miClearLocations.Text = "Clear Locations";
            this.miClearLocations.Click += new System.EventHandler(this.miClearLocations_Click);
            //
            // menuStrip1
            //
            this.menuStrip1.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
            this.oPENToolStripMenuItem});
            this.menuStrip1.Location = new System.Drawing.Point(0, 0);
            this.menuStrip1.Name = "menuStrip1";
            this.menuStrip1.Size = new System.Drawing.Size(712, 24);
            this.menuStrip1.TabIndex = 20;
            this.menuStrip1.Text = "menuStrip1";
            this.menuStrip1.ItemClicked += new System.Windows.Forms.ToolStripItemClickedEventHandler(this.menuStrip1_ItemClicked);
            //
            // oPENToolStripMenuItem
            //
            this.oPENToolStripMenuItem.Name = "oPENToolStripMenuItem";
            this.oPENToolStripMenuItem.RightToLeft = System.Windows.Forms.RightToLeft.Yes;
            this.oPENToolStripMenuItem.Size = new System.Drawing.Size(65, 20);
            this.oPENToolStripMenuItem.Tag = "";
            this.oPENToolStripMenuItem.Text = "查找地点";
            this.oPENToolStripMenuItem.Click += new System.EventHandler(this.oPENToolStripMenuItem_Click);
            //
            // label1
            //
            this.label1.AutoSize = true;
            this.label1.Location = new System.Drawing.Point(134, 7);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(0, 12);
            this.label1.TabIndex = 6;
            this.label1.Click += new System.EventHandler(this.label1_Click);
            //
            // label2
            //
            this.label2.AutoSize = true;
            this.label2.Location new System.Drawing.Point(68, 6);
            this.label2.Name = "label2";
            this.label2.Size = new System.Drawing.Size(293, 12);
            this.label2.TabIndex = 21;
            this.label2.Text = "(点击查找地图功能之前，请确定已经打开一张地图～)";
            //
            // frmMain
            //

            this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
            this.ClientSize = new System.Drawing.Size(712, 500);
            this.Controls.Add(this.label2);
            this.Controls.Add(this.label1);
            this.Controls.Add(this.axLicenseControl1);
            this.Controls.Add(this.axMapControl1);
            this.Controls.Add(this.splitter1);
            this.Controls.Add(this.axTOCControl1);
            this.Controls.Add(this.axToolbarControl1);
            this.Controls.Add(this.menuStrip1);
            this.Location = new System.Drawing.Point(10, 0);
            this.MainMenuStrip = this.menuStrip1;
            this.Name = "frmMain";
            this.Text = "GIS(作者：涛涛)";
            this.Load += new System.EventHandler(this.frmMain_Load);
            ((System.ComponentModel.ISupportInitialize)(this.axMapControl1)).EndInit();
            (System.ComponentModel.ISupportInitialize)(this.axLicenseControl1)).EndInit();
            ((System.ComponentModel.ISupportInitialize)(this.axToolbarControl1)).EndInit();
            ((System.ComponentModel.ISupportInitialize)(this.axTOCControl1)).EndInit();
            this.menuStrip1.ResumeLayout(false);
            this.menuStrip1.PerformLayout();
            this.ResumeLayout(false);
            this.PerformLayout();
    }
  #endregion
  /// w frmMain());
  }
  private void frmMain_Load(object sender, System.EventArgs e)
  {
            pMapControl = (IMapControl2)axMapControl1.Object;
   // Add commands to the NALayer context menu
   m_menuLayer = new ToolbarMenuClass();
   m_menuLayer.AddItem(new LoadLocations(), -1, 0, false, esriCommandStyles.esriCommandStyleTextOnly);
   m_menuLayer.AddItem(new RemoveLayer(), -1, 1, false, esriCommandStyles.esriCommandStyleTextOnly);
   m_menuLayer.AddItem(new ClearAnalysisLayer(), -1, 2, true, esriCommandStyles.esriCommandStyleTextOnly);
   m_menuLayer.AddItem(new NALayerProperties), -1, 3, true, esriCommandStyles.esriCommandStyleTextOnly);
   m_menuLayer.SetHook(axMapControl1);
   // Add command for Network Analyst env properties to "Network Analyst" dropdown menu
   IToolbarItem item = axToolbarControl1.GetItem(2);
   item.Menu.AddItem(new NAProperties(), -1, 1, true, esriCommandStyles.esriCommandStyleTextOnly);
   // Initialize naEnv variables
   m_naEnv = new EngineNetworkAnalystEnvironmentClass();
   m_naEnv.ZoomToResultAfterSolve = false;
   m_naEnv.ShowAnalysisMessagesAfterSolve = (int)(esriEngineNAMessageType.esriEngineNAMessageTypeInformative | esriEngineNAMessageType.esriEngineNAMessageTypeWarning);
   // Explicitly setup buddy control and initialize NA extension
   // so we can get to NAWindow to listen to window events
   // This is necessary the various controls are not yet setup and they
   // need to be in order to get the NAWindow's events.
   axToolbarControl1.SetBuddyControl(axMapControl1);
   IExtension ext = m_naEnv as IExtension;
   object obj = axToolbarControl1.Object;
   ext.Startup(ref obj);
   m_naWindow = m_naEnv.NAWindow;
   m_onContextMenu = new IEngineNAWindowEventsEx_OnContextMenuEventHandler(OnContextMenu);

   ((IEngineNAWindowEventsEx_Event)m_naWindow).OnContextMenu += m_onContextMenu;
  }
  //  Show the TOC context menu when an NALayer is right-clicked on
  private void axTOCControl1_OnMouseDown(object sender, ESRI.ArcGIS.Controls.ITOCControlEvents_OnMouseDownEvent e)
  {
   if (e.button != 2) return;
   esriTOCControlItem item = esriTOCControlItem.esriTOCControlItemNone;
   IBasicMap map = null;
   ILayer layer = null;
   object other = null;
   object index = null;
   //Determine what kind of item has been clicked on
   axTOCControl1.HitTest(e.x, e.y, ref item, ref map, ref layer ref other, ref index);
   // Only implemented a context menu for NALayers.  Exit if the layer is anything else.
   if ((layer as INALayer) == null)
    return;
   axTOCControl1.SelectItem(layer);
   // Set the layer into the CustomProperty.
   // This is used by the other commands to know what layer was right-clicked on
   // in the table of contents.   
   axMapControl1.CustomProperty = layer;
   //Popup the correct context menu and update the TOC when it's done.
   if (item == esriTOCControlItem.esriTOCControlItemLayer)
   {
    m_menuLayer.PopupMenu(e.x,e.y,axTOCControl1.hWnd);
    ITOCControl toc = axTOCControl1.Object as ITOCControl;
    toc.Update();
   }
  }
  public bool OnContextMenu(int x, int y)
  {
   System.Drawing.Point pt = this.PointToClient(System.Windows.Forms.Cursor.Position);
   contextMenu1.Show(this, pt);
   return true;
  }
  private