放大，缩小，全屏，漫游，图层加载，图层显示功能实现

来源：互联网发布：马云膨胀知乎编辑：程序博客网时间：2024/04/30 03:02
1.新建窗体项目
打开C#，新建windows窗体项目，添加控件，ArcGIS Windows Forms：MapControl，TOCControl，
LicenseControl 和Janus WinForms Controls v4：Ribbon
2.属性关联
右击TOCControl，选择属性，将Buddy改为Mapcontrol
3.编写每个控件的功能
using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;using ESRI.ArcGIS.esriSystem;using ESRI.ArcGIS.Carto;using ESRI.ArcGIS.Controls;using ESRI.ArcGIS.SystemUI;using ESRI.ArcGIS.Geometry;namespace basic_tool{    public partial class Form1 : Form    {        //定义变量        private IClone pClone;        private IEnvelope pEnvelope;        int flag = 0;        public Form1()        {            InitializeComponent();        }        private void btn_open_mxd_Click(object sender, Janus.Windows.Ribbon.CommandEventArgs e)        {            System.Windows.Forms.OpenFileDialog openFileDialog;            openFileDialog = new OpenFileDialog();            openFileDialog.Title = "打开地图文档";            openFileDialog.Filter = "map documents(*.mxd)|*.mxd";            openFileDialog.ShowDialog();            string filepath = openFileDialog.FileName;            if (axMapControl1.CheckMxFile(filepath))            {                axMapControl1.MousePointer = esriControlsMousePointer.esriPointerHourglass;//鼠标沙漏等待功能                axMapControl1.LoadMxFile(filepath, 0, Type.Missing);//打开图层                axMapControl1.MousePointer = esriControlsMousePointer.esriPointerDefault;//鼠标沙漏等待功能停止            }            else            {                MessageBox.Show(filepath + "不是有效的地图文档");            }        }        //放大        private void btn_zoomin_Click(object sender, Janus.Windows.Ribbon.CommandEventArgs e)        {            axMapControl1.MousePointer = esriControlsMousePointer.esriPointerPageZoomIn;//鼠标形状控制            flag = 2;        }        //缩小        private void btn_zoomout_Click(object sender, Janus.Windows.Ribbon.CommandEventArgs e)        {            axMapControl1.MousePointer = esriControlsMousePointer.esriPointerPageZoomOut;            flag = 1;        }        //全屏        private void btn_full_Click(object sender, Janus.Windows.Ribbon.CommandEventArgs e)        {            axMapControl1.Extent = axMapControl1.FullExtent;//全屏显示        }        //漫游        private void btn_pan_Click(object sender, Janus.Windows.Ribbon.CommandEventArgs e)        {            axMapControl1.MousePointer = esriControlsMousePointer.esriPointerPan;            flag = 3;        }        //中心放大        private void btn_zoomin_click_Click(object sender, Janus.Windows.Ribbon.CommandEventArgs e)        {            axMapControl1.MousePointer = esriControlsMousePointer.esriPointerPageZoomIn;            pClone = axMapControl1.Extent as IClone;            pEnvelope = pClone as IEnvelope;            pEnvelope.Expand(0.8, 0.8, true);            axMapControl1.Extent = pEnvelope;        }        //中心缩小        private void btn_zoomout_click_Click(object sender, Janus.Windows.Ribbon.CommandEventArgs e)        {            axMapControl1.MousePointer = esriControlsMousePointer.esriPointerPageZoomOut;            pClone = axMapControl1.Extent as IClone;            pEnvelope = pClone as IEnvelope;            pEnvelope.Expand(2, 2, true);            axMapControl1.Extent = pEnvelope;        }        //地图显示        private void axMapControl1_OnMouseDown(object sender, IMapControlEvents2_OnMouseDownEvent e)        {            ESRI.ArcGIS.Geometry.IEnvelope ipEnv;//虚拟矩形            if (flag == 2)            {                ipEnv = axMapControl1.TrackRectangle();//画框放大                ipEnv = axMapControl1.Extent;//点击放大                ipEnv.Expand(0.8, 0.8, true);//放大比例，0.8为比例系数，可修改                axMapControl1.Extent = ipEnv;            }            else if (flag == 1)            {                ipEnv = axMapControl1.TrackRectangle();                ipEnv = axMapControl1.Extent;                ipEnv.Expand(2, 2, true);                axMapControl1.Extent = ipEnv;            }            else if (flag == 3)            {                axMapControl1.Pan();//漫游            }        }    }}
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