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<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(); } } }