ArcGIS Engine Development (i) zoom in, zoom out, roam, global, etc.

One: implementation function: Map zoom in, zoom out, roam, global

Second: Operation effect:

Three: The source code is as follows:

Using system;using system.collections.generic;using system.componentmodel;using system.data;using System.Drawing; 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 lesson4{public partial class Form1:form {public Form1 () {Ini        Tializecomponent ();        } private void Form1_Load (object sender, EventArgs e) {loadmapdocument ();        } int flag = 0; Enlarge private void Button1_Click (object sender, EventArgs e) {axmapcontrol1.mousepointer = Esrico            Ntrolsmousepointer.esripointerzoomin;        flag = 2; }//Shrink private void button2_click (object sender, EventArgs e) {axMapControl1.            MousePointer = Esricontrolsmousepointer.esripointerzoomout;        flag = 1; }//Roaming private void button3_click (object sender, EventArgs e) {axmapcontrol1.mousepointer = Esricontrolsmousepointer.esripointerp            An        flag = 3; }//Full map private void Button4_Click (object sender, EventArgs e) {axmapcontrol1.extent = ax        Mapcontrol1.fullextent; }//load map document private void Loadmapdocument () {System.Windows.Forms.OpenFileDialog Openfiledi            Alog            OpenFileDialog = new OpenFileDialog ();            Openfiledialog.title = "Open map document";            Openfiledialog.filter = "Map documents (*.MXD) |*.mxd";            Openfiledialog.showdialog ();            string filePath = Openfiledialog.filename; if (Axmapcontrol1.checkmxfile (FilePath)) {Axmapcontrol1.mousepointer = Esricontrolsmousepointer                . Esripointerhourglass;                Axmapcontrol1.loadmxfile (FilePath, 0, Type.Missing); Axmapcontrol1.mousepointer = Esricontrolsmousepointer.esripointerdefault;            } else {MessageBox.Show (FilePath + "is not a valid map document");        }} private void Axmapcontrol1_onmousedown (object sender, Imapcontrolevents2_onmousedownevent e) {ESRI.            ArcGIS.Geometry.IEnvelope ipenv;                if (flag = = 2) {ipenv = Axmapcontrol1.trackrectangle ();            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) {ipenv = axmapcontrol1.extent;            Axmapcontrol1.pan (); }        }    }}

The complete demo can be downloaded from the information I upload, and can also be consulted online qq937292955

ArcGIS Engine Development (i) zoom in, zoom out, roam, global, etc.