Editing the Attributes of a feature Programmatically

Question

I have a feature layer with features that I would like to update programmatically. Below is my code: private void EditQueryTask_ExecuteCompleted(object sender, ESRI.ArcGIS.Client.Tasks.QueryEventArgs args) { try { if (txtServiceType.Text.Contains("Water") || txtServiceType.Text.Contains("WATER")) { FeatureLayer fl = MyMap.Layers["Meters"] as FeatureLayer; List deletedServiceOrders = new List(); FeatureSet fs = args.FeatureSet; fs.Features[0].Attributes["PWSID"] = txtMeterNumber.Text; fs.Features[0].Attributes["CIS_METR"] = txtAccountNumber.Text; fs.Features[0].Attributes["CUSTYPE"] = txtCustType.Text; fs.Features[0].Attributes["STR"] = txtStreet.Text; fs.Features[0].Attributes["CITY"] = txtCity.Text; fs.Features[0].Attributes["COMMENTS"] = txtName.Text; fl.SaveEdits(); fl.Update(); DeleteServiceOrder.Visibility = Visibility.Collapsed; fl.EndSaveEdits += featurelayerSO_EndSaveEdits; fl.SaveEditsFailed += featurelayerSO_SaveEditsFailed; } } catch (Exception e) { MessageBox.Show(e.Message); } } Everything is being set correctly and there are no errors, but the values are not actually being saved into ESRI. I am thinking it has something to do with nothing has ever actually be edited? I know I am missing something. Any help would be appreciated!

JaredStewart · Answer

Hi Jessica,

If your feature layer is being hosted with Feature Access on ArcGIS Server, you could try something like this:

private void EditQueryTask_ExecuteCompleted(object sender, ESRI.ArcGIS.Client.Tasks.QueryEventArgs args)

{

try

{

if (txtServiceType.Text.Contains("Water") || txtServiceType.Text.Contains("WATER"))

{

var myServiceUrl = ""; // Enter your service URL here (Ex: http://myAGS:6080/arcgis/rest/services/myService/FeatureServer/ )

FeatureSet fs = args.FeatureSet;

var featureString = String.Format(

"[{{\"id\":0, \"updates\": [{{" +

"\"geometry\":{{\"x\":{0},\"y\":{1}}}," +

"\"attributes\":" +

"{{" +

"\"PWSID\":{2}," +

"\"CIS_METR\":{3}," +

"\"CUSTYPE\":{4}," +

"\"STR\":{5}," +

"\"CITY\":{6}," +

"\"COMMENTS\":{7}," +

"}}" +

"}}]}}]",

fs.Features[0].geometry.X,

fs.Features[0].geometry.Y,

txtMeterNumber.Text,

txtAccountNumber.Text,

txtCustType.Text,

txtStreet.Text,

txtCity.Text,

txtName.Text

);

var parameters = "edits=" + HttpUtility.UrlEncode(featureString) + "&f=pjson";

var wc = new WebClient();

wc.headers["Content-Type"] = "application/x-www-form-urlencoded";

wc.Encoding = Encoding.UTF8;

wc.UploadStringCompleted += (sender, e) =>
                   {
                          if (e.Error == null)
                          {
                              var responseString = e.Result;

if (responseString.contains("\"success\": true"))
                              {
                                   MessageBox.Show("Successfully updated.");
                              }
                              else
                              {
                                   MessageBox.Show("ERROR: " + responseString);
                              }
                         }
                         else
                         {
                             MessageBox.Show("ERROR: " + e.Error.Message);
                         }

};
               wc.UploadStringAsync(new Uri(myServiceUrl + "/applyEdits"), "POST", parameters);
          }
     }
     catch (Exception e)
     {
          MessageBox.Show(e.Message);
     }

}

The code will probably need some tweaking to fit your needs, but this is roughly what I've been using to update features programmatically.

MichaelBranscomb · Answer

Hi,

I suggest taking a look at the Dev Summit examples: http://www.arcgis.com/home/item.html?id=3f69c79bbd7340b09fad396647a977a5

Specifically the Editing-Stand-Alone-Tables example.

Cheers

Mike