ApplyEditsAsync() the second time return no EditResults

Question

Hi, I want to rollback an Edit since last UpdateFeatureAsync an ApplyEditsAsync(just geometry), so I give the feature the old geometry then UpdateFeatureAsync an ApplyEditsAsync, but it seems can't apply to server database the second time and with no EditResults(count=0) return, Below is my codes var geoBeforeEdit = feature.Geometry; var editGeometry = await mapControlView.SketchEditor.StartAsync(feature.Geometry); feature.Geometry = editGeometry; await feature.FeatureTable.UpdateFeatureAsync(feature); IReadOnlyList<EditResult> editResults = await (feature.FeatureTable as ServiceFeatureTable).ApplyEditsAsync(); if (editResults.Any(r => r.CompletedWithErrors == true)) { XHNotifyIcon.ShowFancyBalloon(editResults.Where(r => r.CompletedWithErrors == true).Aggregate(string.Empty, (current, o) => "Edit to Object '" + o.ObjectId + "' failed: " + o.Error.Message + " ")); return false; } bool isSuccess = //do something else..... if(!isSuccess ) { feature.Geometry = geoBeforeEdit; await feature.FeatureTable.UpdateFeatureAsync(feature); IReadOnlyList<EditResult> editResults = await (feature.FeatureTable as ServiceFeatureTable).ApplyEditsAsync(); if (editResults.Any(r => r.CompletedWithErrors == true)) { XHNotifyIcon.ShowFancyBalloon(editResults.Where(r => r.CompletedWithErrors == true).Aggregate(string.Empty, (current, o) => "Edit to Object '" + o.ObjectId + "' failed: " + o.Error.Message + " ")); return false; } }‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

xiaoguangyan · Answer

Hi, maybe the codes is a bit confusing, I change the codes like below and it will be more clearly. var geoBeforeEdit = feature.Geometry; var editGeometry = await mapControlView.SketchEditor.StartAsync(feature.Geometry); feature.Geometry = editGeometry; await feature.FeatureTable.UpdateFeatureAsync(feature); await (feature.FeatureTable as ServiceFeatureTable).ApplyEditsAsync(); bool isSuccess = //do something else..... if(!isSuccess ) { feature.Geometry = geoBeforeEdit; await feature.FeatureTable.UpdateFeatureAsync(feature); await (feature.FeatureTable as ServiceFeatureTable).ApplyEditsAsync(); }‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

SomeGISGuy · Answer

I'm a little confused about this. You want to roll back if an error occurred failing to apply? If it failed to apply, there's nothing to roll back on the server.