using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using ESRI.ArcGIS.Client;
using ESRI.ArcGIS.Client.Geometry;
using ESRI.ArcGIS.Client.Tasks;
using System.Net;
using System.IO;namespace ArcGISDemo
{//自定义的Featureclass FeatureItem{public Geometry Geometry { set; get; }public IDictionary<string, object> Attributes { set; get; }};class Program{static bool AddFeature(string layerUrl, FeatureItem featureItem){string url = layerUrl+"/addFeatures";string data = "f=json"; //以json格式返回结果
ESRI.ArcGIS.Client.Graphic g = new ESRI.ArcGIS.Client.Graphic(){//Graphic的Attributes在ArcGIS API for WPF 中是只读的//如果是可写的，就可以直接使用Graphic的Attributes，而不需要拼接json//Attributes = featureItem.Attributes, Geometry = featureItem.Geometry};FeatureSet fs = new FeatureSet();fs.Features.Add(g);//使用FeatureSet自带的ToJson函数转换，可以帮助转换Feature的Geometry对象//ArcGIS的Geometry对象序列化为json字符串时和标准的json不太一样string json = fs.ToJson();int begin = json.IndexOf("[");int end = json.IndexOf("]", begin);string featuresJson = json.Substring(begin, end - begin + 1);string features = string.Format("&features={0}", featuresJson);data += features;//使用fastJson转换Attributes//fastJSON.JSON.Instance.Parameters.UseEscapedUnicode = false;//string attr = fastJSON.JSON.Instance.ToJSON(featureItem.Attributes);string attr = Newtonsoft.Json.JsonConvert.SerializeObject(featureItem.Attributes);//int attrPos = data.IndexOf("attributes");//将原来空的Attributes替换掉，以自己转换的json字符串实际情况为准string para = data.Replace("\"attributes\":{}","\"attributes\":"+attr);string res = PostData(url, para);//处理返回的结果if (res.Contains("error"))return false;Dictionary<string, List<Dictionary<string, object>>> resDic = Newtonsoft.Json.JsonConvert.DeserializeObject<Dictionary<string, List<Dictionary<string, object>>>>(res);if (resDic.ContainsKey("addResults")){List<Dictionary<string, object>> addRes = resDic["addResults"];foreach (Dictionary<string, object> dic in addRes){if (dic.ContainsKey("success")){if (dic["success"].ToString().ToLower() == "true")return true;else return false;}}}return false;}static string PostData(string url, string data){HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;request.Method = "POST";request.ContentType = "application/x-www-form-urlencoded";byte[] bs = Encoding.UTF8.GetBytes(data);Stream reqStream = request.GetRequestStream();reqStream.Write(bs, 0, bs.Length);reqStream.Close();string responseString = null;using (HttpWebResponse response = request.GetResponse() as HttpWebResponse){StreamReader reader = new StreamReader(response.GetResponseStream());responseString = reader.ReadToEnd();reader.Close();}return responseString;}static void Main(string[] args){string url = "http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Fire/Sheep/FeatureServer/0";MapPoint point = new MapPoint(105, 30);FeatureItem fi = new FeatureItem();fi.Geometry = point;fi.Attributes = new Dictionary<string, object>();fi.Attributes.Add("description", "测试点");bool res = AddFeature(url, fi);if (res){Console.WriteLine("添加要素成功！");}else{Console.WriteLine("添加要素失败！");}Console.ReadKey();}}
}