topic Re: Feature Layer query after editing in ArcGIS API for Silverlight Questions

Feature Layer query after editing

WilliamKimrey — Mon, 28 Feb 2011 18:26:34 GMT

Hello all,

After I perform an edit on a FeatureLayer, when I query the feature I just edited, the query results return the old value. This doesn't happen when I add a new feature, only when I edit an existing feature. Any reason why this is or ideas on how to get the new updated values?

Thanks,
Will

Re: Feature Layer query after editing

WilliamKimrey — Mon, 28 Feb 2011 20:18:15 GMT

I should probably clarify that the QueryTask I'm using is on the MapService while the editing is on the FeatureService for the same published MXD. I get the feeling that this is where the disconnect lies.

Thanks,
Will

Re: Feature Layer query after editing

JenniferNery — Sat, 11 Dec 2021 20:21:43 GMT

I tried to replicate the issue by performing an attribute value change on feature service and performing a query on its corresponding map service after the edit was submitted to the server. I was able to see the updated attribute value when my QueryTask ExecuteCompleted.

I used the following code where my FeatureLayer is AutoSave=True so I did not need to call SaveEdits() explicitly. I also subscribed to EndSaveEdits and SaveEditsFailed to make sure that the edit was submitted to the server.

private void Query_Click(object sender, RoutedEventArgs e)
{
 Query q = new Query()
 {
  OutFields = new OutFields() { "*" },
  ObjectIDs = new int[] { 78597 },
 };    
 QueryTask qt = new QueryTask("http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/HomelandSecurity/operations/MapServer/2");
 qt.DisableClientCaching = true;
 qt.ExecuteCompleted += new EventHandler<QueryEventArgs>(qt_ExecuteCompleted);
 qt.ExecuteAsync(q);
}

void qt_ExecuteCompleted(object sender, QueryEventArgs e)
{
 foreach (var f in e.FeatureSet.Features)
  System.Diagnostics.Debug.WriteLine(f.Attributes["description"]);
}

private void FeatureLayer_MouseLeftButtonDown(object sender, GraphicMouseButtonEventArgs e)
{
 //78597
 e.Graphic.Attributes["description"] = "this is a test";
}

If SaveEditsFailed event did not get raised and the edit was submitted successfully, maybe you just need to set DisableClientCaching to true on QueryTask http://help.arcgis.com/en/webapi/silverlight/apiref/ESRI.ArcGIS.Client~ESRI.ArcGIS.Client.Tasks.TaskBase~DisableClientCaching.html

Re: Feature Layer query after editing

WilliamKimrey — Tue, 01 Mar 2011 12:01:54 GMT

Thanks Jennifer,

Setting DisableClientCaching to true solved the problem. I'm not getting the correct updated values for my query. Thank you for the solution.

Will