Question

我试图通过.Net更新要素图层的属性。但我不断收到此错误消息：＆＃34;无法在此上下文中调用此方法：您必须在编辑之前加载该功能。＆＃34; 这是我的代码：

static void Main(string[] args) {

  var featureTable = new ServiceFeatureTable(new Uri("https://services7.arcgis.com/yixziXsHssbXEWl5/ArcGIS/rest/services/grex/FeatureServer/0")) {Credential = new ArcGISTokenCredential()};

  ((TokenCredential) featureTable.Credential).Token = GetToken().access_token;
  var queryParams = new QueryParameters {WhereClause = "DeelplanId = 666"};

  // Query the feature table 
  var queryResult =  featureTable.QueryFeaturesAsync(queryParams);
  // Cast the QueryResult to a List so the results can be interrogated
  queryResult.Wait();
  var features = queryResult.Result.ToList();

  features[0].SetAttributeValue("Kosten", 3562);

  Console.ReadKey();
}

它在SetAttributeValue上失败，虽然我看到属性是从服务器加载的。任何想法？，thx！

Answer 1

必须加载该功能：

var editFeature = features.First（）; await（editFeature as ArcGISFeature）.LoadAsync（）; editFeature.SetAttributeValue（“description”，$“从运行时更新{DateTime.Now.ToShortTimeString（）}”）;

https://geonet.esri.com/thread/195459-update-feature-returns-cannot-call-this-method-in-this-context-you-must-load-the-feature-before-editing

.net ArcGis更新功能返回＆＃34;无法在此上下文中调用此方法：您必须在编辑之前加载该功能。＆＃34;

1 个答案: