setpoint.html:

　　用Winform 读取百度地图的经纬度：

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 System.Security.Permissions;namespace baidudemo{    [PermissionSet(SecurityAction.Demand, Name = "FullTrust")]    [System.Runtime.InteropServices.ComVisibleAttribute(true)]     public partial class Form2 : Form    {        /// 
        ///         /// 
        public Form2()        {            InitializeComponent();        }        /// 
        ///         /// 
        ///         ///         private void Form2_Load(object sender, EventArgs e)        {            string str_url = Application.StartupPath + "\\baidu\\setpoint.html";            Uri url = new Uri(str_url);            webBrowser1.Url = url;            webBrowser1.ObjectForScripting = this;        }        /// 
        ///         /// 
        ///         ///         private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)        {        }        /// 
        ///         /// 
        ///         ///         private void button1_Click(object sender, EventArgs e)        {            string tag_lng = webBrowser1.Document.GetElementById("lng").InnerText;            string tag_lat = webBrowser1.Document.GetElementById("lat").InnerText;            this.textBox1.Text = tag_lat;            this.textBox2.Text = tag_lng;        }        /// 
        ///         /// 
        ///         ///         private void webBrowser1_LocationChanged(object sender, EventArgs e)        {;        }    }}

　　

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Collections;using System.Web;using System.Web.Script.Serialization; //引用System.Web.Extensions using System.Data;using System.IO;using System.Runtime.Serialization;using System.Runtime.Serialization.Json;using System.Runtime.Serialization.Formatters;

　　

 

/// 
    ///    /// 
    public class JsonHelper    {        //对应JSON的singleInfo成员        public string singleInfo = string.Empty;        protected string _error = string.Empty;        protected bool _success = true;        protected long _totalCount = 0;        protected System.Collections.ArrayList arrData = new ArrayList();        protected System.Collections.ArrayList arrDataItem = new ArrayList();        public JsonHelper()        {            //            //TODO: 在此处添加构造函数逻辑            //        }        //对应于JSON的success成员        public bool success        {            get            {                return _success;            }            set            {                //如设置为true则清空error                if (success) _error = string.Empty;                _success = value;            }        }        //对应于JSON的error成员        public string error        {            get            {                return _error;            }            set            {                //如设置error，则自动设置success为false                if (value != "") _success = false;                _error = value;            }        }        public long totlalCount        {            get { return _totalCount; }            set { _totalCount = value; }        }        //重置，每次新生成一个json对象时必须执行该方法        public void Reset()        {            _success = true;            _error = string.Empty;            singleInfo = string.Empty;            arrData.Clear();            arrDataItem.Clear();        }        public void AddItem(string name, string value)    {        arrData.Add("/" + name + "/:" + "/" + value + "/");    }        public void ItemOk()        {            arrData.Add("
");            //返回总记录条数            totlalCount++;        }        //序列化JSON对象，得到返回的JSON代码        public override string ToString()       {        StringBuilder sb = new StringBuilder();        sb.Append("{");        sb.Append("/totalCount/:/" + _totalCount.ToString() + "/,");        sb.Append("/success/:" + _success.ToString().ToLower() + "/,");        sb.Append("/error/:/" + _error.Replace("/", "///") + "/,");        sb.Append("/data/:/[");        int index = 0;        sb.Append("{");        if (arrData.Count <= 0)        {            sb.Append("}");        }        else        {            foreach (string val in arrData)            {                index++;                if (val != "
")                {                    sb.Append(val + ",");                }                else                {                    sb = sb.Replace(",", "", sb.Length - 1, 1);                    sb.Append("},");                    if (index < arrData.Count)                    {                        sb.Append("{");                    }                }            }            sb = sb.Replace(",", "", sb.Length - 1, 1);            sb.Append("]");        }        sb.Append("}");        return sb.ToString();    }        public string ToSingleString()        {            StringBuilder sb = new StringBuilder();            sb.Append("{");            sb.Append("success:" + _success.ToString().ToLower() + ",");            sb.Append("data:");            int index = 0;            sb.Append("{");            if (arrData.Count <= 0)            {                sb.Append("}");            }            else            {                foreach (string val in arrData)                {                    index++;                    if (val != "
")                    {                        sb.Append(val + ",");                    }                    else                    {                        sb = sb.Replace(",", "", sb.Length - 1, 1);                        sb.Append("},");                        if (index < arrData.Count)                        {                            sb.Append("{");                        }                    }                }                sb = sb.Replace(",", "", sb.Length - 1, 1);                sb.Append("");            }            sb.Append("}");            return sb.ToString();        }         public static string ObjectToJSON(object obj)             {                     JavaScriptSerializer jss =new JavaScriptSerializer();                     try                     {                             return jss.Serialize(obj);                     }                     catch(Exception ex)                     {                             throw new Exception("JSONHelper.ObjectToJSON(): "+ ex.Message);                     }             }             public static List
     
      
       >DataTableToList(DataTable dt)             {                     List
       
        
         > list=new List
         
          
           >(); foreach(DataRow dr in dt.Rows) { Dictionary
           
             dic =new Dictionary
            
             (); foreach(DataColumn dc in dt.Columns) { dic.Add(dc.ColumnName, dr[dc.ColumnName]); } list.Add(dic); } return list; } /// 
             
 /// /// 
 /// 
              /// 
              public static Dictionary
             
              
               
                >>DataSetToDic(DataSet ds) { Dictionary
                
                 
                  
                   >> result =new Dictionary
                   
                    
                     
                      >>(); foreach(DataTable dt in ds.Tables) result.Add(dt.TableName,DataTableToList(dt)); return result; } /// 
                      
 /// /// 
 /// 
                       /// 
                       public static string DataTableToJSON(DataTable dt) { return ObjectToJSON(DataTableToList(dt)); } /// 
                      
 /// /// 
 /// 
                       /// 
                       /// 
                       public static T JSONToObject
                      
                       (string jsonText) { JavaScriptSerializer jss =new JavaScriptSerializer(); try { return jss.Deserialize
                       
                        (jsonText); } catch(Exception ex) { throw new Exception("JSONHelper.JSONToObject(): "+ ex.Message); } } /// 
                        
 /// /// 
 /// 
                         /// 
                         public static Dictionary
                        
                         
                          
                           >>TablesDataFromJSON(string jsonText) { return JSONToObject
                           
                            
                             
                              
                               >>>(jsonText); } /// 
                               
 /// /// 
 /// 
                                /// 
                                public static Dictionary
                               
                                DataRowFromJSON(string jsonText) { return JSONToObject
                                
                                 
                                  >(jsonText); } public static string ToJsJson(object item)//参数要装换成JSON的对象 { DataContractJsonSerializer serializer = new DataContractJsonSerializer(item.GetType()); using(MemoryStream ms=new MemoryStream()) { serializer.WriteObject(ms, item); StringBuilder sb = new StringBuilder(); sb.Append(Encoding.UTF8.GetString(ms.ToArray())); return sb.ToString(); } } //反序列化 //T指定要序列化的对象,jsonString是JSON字符串变量 public static T FromJsonTo
                                  
                                   (string jsonString) { DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T)); using (MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonString))) { T jsonObject = (T)ser.ReadObject(ms); return jsonObject; } } }
                                  
                                 
                                
                               
                              
                             
                            
                           
                          
                         
                        
                       
                      
                     
                    
                   
                  
                 
                
               
              
             
            
           
          
         
        
       
      
     

　　

/// 
    /// 提供 Http 相关方法。    /// 
    public class HttpUtils    {        /// 
        /// 执行HTTP GET请求。        /// 
        /// 请求地址        /// 请求参数        /// 
     
      HTTP响应
             public static string DoGet(string url, IDictionary
     
       parameters)        {            if (parameters != null && parameters.Count > 0)            {                if (url.Contains("?"))                {                    url = url + "&" + BuildPostData(parameters);                }                else                {                    url = url + "?" + BuildPostData(parameters);                }            }            HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);            req.ServicePoint.Expect100Continue = false;            req.Method = "GET";            req.KeepAlive = true;            req.UserAgent = "Test";            req.ContentType = "application/x-www-form-urlencoded;charset=utf-8";            HttpWebResponse rsp = null;            try            {                rsp = (HttpWebResponse)req.GetResponse();            }            catch (WebException webEx)            {                if (webEx.Status == WebExceptionStatus.Timeout)                {                    rsp = null;                }            }            if (rsp != null)            {                if (rsp.CharacterSet != null)                {                    Encoding encoding = Encoding.GetEncoding(rsp.CharacterSet);                    return GetResponseAsString(rsp, encoding);                }                else                {                    return string.Empty;                }            }            else            {                return string.Empty;            }        }        /// 
      
        /// 把响应流转换为文本。        /// 
        /// 
      响应流对象        /// 
      编码方式        /// 
      
       响应文本
              private static string GetResponseAsString(HttpWebResponse rsp, Encoding encoding)        {            StringBuilder result = new StringBuilder();            Stream stream = null;            StreamReader reader = null;            try            {                // 以字符流的方式读取HTTP响应                stream = rsp.GetResponseStream();                reader = new StreamReader(stream, encoding);                // 每次读取不大于256个字符，并写入字符串                char[] buffer = new char[256];                int readBytes = 0;                while ((readBytes = reader.Read(buffer, 0, buffer.Length)) > 0)                {                    result.Append(buffer, 0, readBytes);                }            }            catch (WebException webEx)            {                if (webEx.Status == WebExceptionStatus.Timeout)                {                    result = new StringBuilder();                }            }            finally            {                // 释放资源                if (reader != null) reader.Close();                if (stream != null) stream.Close();                if (rsp != null) rsp.Close();            }            return result.ToString();        }        /// 
      
        /// 组装普通文本请求参数。        /// 
        /// 
      Key-Value形式请求参数字典。        /// 
      
       URL编码后的请求数据。
              private static string BuildPostData(IDictionary
      
        parameters)        {            StringBuilder postData = new StringBuilder();            bool hasParam = false;            IEnumerator
       
        
         > dem = parameters.GetEnumerator();            while (dem.MoveNext())            {                string name = dem.Current.Key;                string value = dem.Current.Value;                // 忽略参数名或参数值为空的参数                if (!string.IsNullOrEmpty(name) && !string.IsNullOrEmpty(value))                {                    if (hasParam)                    {                        postData.Append("&");                    }                    postData.Append(name);                    postData.Append("=");                    postData.Append(Uri.EscapeDataString(value));                    hasParam = true;                }            }            return postData.ToString();        }        /*         GoBack()：后退        GoForward()：前进        Refresh()：刷新        Stop()：停止        GoHome()：浏览主页        WebBrowser控件的常用属性：        Document：获取当前正在浏览的文档        DocumentTitle：获取当前正在浏览的网页标题        StatusText：获取当前状态栏的文本        Url：获取当前正在浏览的网址的Uri        ReadyState：获取浏览的状态        WebBrowser控件的常用事件：        DocumentTitleChanged,        CanGoBackChanged,        CanGoForwardChanged,        DocumentTitleChanged,        ProgressChanged,        ProgressChanged                  */        /// 
         
        /// 根据Name获取元素        /// 
        /// 
                 /// 
                 /// 
                 public HtmlElement GetElement_Name(WebBrowser wb, string Name)        {            HtmlElement e = wb.Document.All[Name];            return e;        }        /// 
         
        /// 根据Id获取元素        /// 
        /// 
                 /// 
                 /// 
                 public HtmlElement GetElement_Id(WebBrowser wb, string id)        {            HtmlElement e = wb.Document.GetElementById(id);            return e;        }        /// 
         
        /// 根据Index获取元素        /// 
        /// 
                 /// 
                 /// 
                 public HtmlElement GetElement_Index(WebBrowser wb, int index)        {            HtmlElement e = wb.Document.All[index];            return e;        }        /// 
         
        /// 获取form表单名name,返回表单        /// 
        /// 
                 /// 
                 /// 
                 public HtmlElement GetElement_Form(WebBrowser wb, string form_name)        {            HtmlElement e = wb.Document.Forms[form_name];            return e;        }        /// 
         
        /// 设置元素value属性的值        /// 
        /// 
                 /// 
                 public void Write_value(HtmlElement e, string value)        {            e.SetAttribute("value", value);        }        /// 
         
        /// 执行元素的方法，如：click，submit(需Form表单名)等        /// 
        /// 
                 /// 
                 public void Btn_click(HtmlElement e, string s)        {            e.InvokeMember(s);        }    }
        
       
      
     

　　工作流程图：

https://jsplumbtoolkit.com/demos/toolkit/flowchart-builder/index.html