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Feature

class FeatureItem

{

public Geometry Geometry { set; get; }

public IDictionary 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>> resDic

= Newtonsoft.Json.JsonConvert.DeserializeObject>>>(res);

if (resDic.ContainsKey("addResults"))

{

List> addRes = resDic["addResults"];

foreach (Dictionary 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();

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();

}

}

}