【动态加载百度舆图】涉及到的知识点:
WebBrowser控件,此控件是VS自带的控件,运用户能够在WinForm窗体中导航网页。重要用到Navigate函数,此函数将指定的一致资本定位符 (URL) 处的文档加载到浏览器新窗口或 System.Windows.Forms.WebBrowser 控件中。有关此控件的细致信息,请参照MSDN上细致申明。
百度舆图JavaScript API,挪用API在网页中显现百度舆图。
效果图以下:
关于挪用百度舆图的Html代码以下:
1 <!DOCTYPE html> 2 <html> 3 <head> 4 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 5 <meta name="viewport" content="initial-scale=1.0, user-scalable=no" /> 6 <style type="text/css"> 7 body, html,#allmap {width: 100%;height: 100%;overflow: hidden;margin:0;font-family:"微软雅黑";} 8 </style> 9 <script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=AKCode须要要求"></script> 10 <title>舆图展现</title> 11 <script type="text/javascript"> 12 window.onload = function () { 13 // 百度舆图API功用 14 var map = new BMap.Map("allmap"); 15 var point = new BMap.Point(116.404, 39.915); 16 map.centerAndZoom(point, 15); 17 // 编写自定义函数,建立标注 18 function addMarker(point) { 19 var marker = new BMap.Marker(point); 20 map.addOverlay(marker); 21 } 22 // 随机向舆图增加25个标注 23 var bounds = map.getBounds(); 24 var sw = bounds.getSouthWest(); 25 var ne = bounds.getNorthEast(); 26 var lngSpan = Math.abs(sw.lng - ne.lng); 27 var latSpan = Math.abs(ne.lat - sw.lat); 28 for (var i = 0; i < 25; i++) { 29 var point = new BMap.Point(sw.lng + lngSpan * (Math.random() * 0.7), ne.lat - latSpan * (Math.random() * 0.7)); 30 addMarker(point); 31 } 32 // 33 var top_left_control = new BMap.ScaleControl({ anchor: BMAP_ANCHOR_TOP_LEFT }); // 左上角,增加比例尺 34 var top_left_navigation = new BMap.NavigationControl(); //左上角,增加默许缩放平移控件 35 var top_right_navigation = new BMap.NavigationControl({ anchor: BMAP_ANCHOR_TOP_RIGHT, type: BMAP_NAVIGATION_CONTROL_SMALL }); //右上角,仅包括平移和缩放按钮 36 map.addControl(top_left_control); 37 map.addControl(top_left_navigation); 38 map.addControl(top_right_navigation); 39 } 40 </script> 41 </head> 42 <body> 43 <div id="allmap"></div> 44 </body> 45 </html>
关于WinForm挪用Html的代码以下:
private void BaiduMap01_Load(object sender, EventArgs e) 2 { 3 //htm文件Copy到顺序根目录 4 this.wbBaidu.Navigate(AppDomain.CurrentDomain.BaseDirectory + "Baidu01.htm",false); 5 }
【加载静态图】涉及到知识点
挪用百度的静态图接口
PictureBox VS自带的图片容器,示意用于显现图象的 Windows 图片框控件。
HttpWebRequest,HttpWebResponse 在WinForm中发送/吸收 http要求。
Thread 为了不让界面卡死,采纳在背景历程中挪用。
将返回的字撙节,转换成Image对象
效果图以下:
关于在WinForm顺序中挪用静态图API的代码以下:
1 using System; 2 using System.Collections.Generic; 3 using System.ComponentModel; 4 using System.Data; 5 using System.Drawing; 6 using System.Linq; 7 using System.Text; 8 using System.Windows.Forms; 9 using System.Net; 10 using System.IO; 11 using System.Threading; 12 13 namespace DemoSharp 14 { 15 public partial class BaiduMap02 : Form 16 { 17 public BaiduMap02() 18 { 19 InitializeComponent(); 20 } 21 22 private void btnLoad_Click(object sender, EventArgs e) 23 { 24 //在线程中实行 25 Thread t = new Thread(new ThreadStart(InitMap)); 26 t.Start(); 27 } 28 29 private void InitMap() { 30 string url = "http://api.map.baidu.com/staticimage/v2?ak=AKCode须要要求&mcode=666666¢er=116.403874,39.914888&width=910&height=400&zoom=11"; 31 HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url); 32 request.Method = "GET"; 33 HttpWebResponse response = request.GetResponse() as HttpWebResponse; 34 while (true) 35 { 36 if (response.StatusCode == HttpStatusCode.OK) 37 { 38 Image img = Image.FromStream(response.GetResponseStream()); 39 this.pictureBox1.Image = img; 40 break; 41 } 42 Thread.Sleep(1000); 43 } 44 } 45 } 46 }
跋文:
挪用百度舆图相干功用时,须要先要求密钥(AK),个人开辟进修运用手机举行注册即可。
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