topic Re: editing multipoint in ArcGIS API for Silverlight Questions

editing multipoint

ArneDahlman — Thu, 08 Sep 2011 05:06:29 GMT

I have a editable feature layer in my map.
So far I have encountered three problems.

1. I add a new feature using the add tool. When hitting save I get error "Unable to complete operation".
In fiddler I can se that geometry is sent as a point, not multipoint.
Error message in fiddler: {"error":{"code":400,"message":"Unable to complete operation.","details":["Invalid graphic features","Invalid parameters"]}}
I can add multipoints using REST. So I guesss the service is OK.

2. When trying to use the vertex editing tool, I get a crash. See attatched screen dump.

3. The union tool is disabled. I works for point, polygon and polyline.

Tools from XAML:
<Button x:Name="AddButton" Margin="2" ToolTipService.ToolTip="Rita ny" Command="{Binding Add}">
   <Image Source="/images/pencil_add.png" Stretch="UniformToFill" Height="16" Width="16" />
</Button>
<Button x:Name="EditVerticesButton" Margin="2" ToolTipService.ToolTip="Brytpunktsredigera" Command="{Binding EditVertices}" IsEnabled="False" >
   <Image Source="/images/shape_handles.png" Stretch="UniformToFill" Height="16" Width="16" />
</Button>
<Button x:Name="UnionButton" Margin="2" ToolTipService.ToolTip="Slå ihop markerade till en geometri" Command="{Binding Union}" >
   <Image Source="/images/shape_union.png" Stretch="UniformToFill" Height="16" Width="16" />
</Button>

FeatureLayer from XAML:
<esri:FeatureLayer ID="PolytaxHänsynPunktTest" DisableClientCaching="True"
AutoSave="False"
Url="http://ags1int/ArcGIS/rest/services/msdedit/editVisaPolytaxTest/FeatureServer/0"
OutFields="*"
Mode="OnDemand" />

I'am using api 2.2.
Any Ideas?

Re: editing multipoint

JenniferNery — Sat, 11 Dec 2021 19:12:36 GMT

The API does not support editing MultiPoint geometries. What you can do is subscribe to Editor.EditCompleted event and update the graphic.Geometry before it is saved.

private void Editor_EditCompleted(object sender, ESRI.ArcGIS.Client.Editor.EditEventArgs e)
{
 foreach (var edit in e.Edits)
 {
  if (edit.Graphic != null && edit.Graphic.Geometry is MapPoint)
  {
   var multiPointGeom = new MultiPoint();
   multiPointGeom.Points.Add(edit.Graphic.Geometry as MapPoint);
   edit.Graphic.Geometry = multiPointGeom;
  }
 }
}

You might also want to try this sample for Union: http://help.arcgis.com/en/webapi/silverlight/samples/start.htm#Union

Re: editing multipoint

ArneDahlman — Fri, 09 Sep 2011 05:28:31 GMT

Thank you for your reply.

OK, this may be a workaround.

Is there any future plans for supporting multipoints?

I think that this is some basic functionality that one would expect to find in a GIS application.

Re: editing multipoint

JenniferNery — Mon, 12 Sep 2011 21:19:20 GMT

Thank you for your feedback, I forwarded your request to the team for consideration.

Re: editing multipoint

GaryBushek — Thu, 28 Jun 2012 19:50:40 GMT

Jennifer,
I'm not editing points but I am trying to union point selections when the user chooses "add to selection" in my application. The union operation doesn't seem to work for multipoint features which sounds kind of like what you were talking about here. But like I said, im not editing points. Can you verify that points cannot be "unioned" to multi point features? When the user chooses "New Selection" and selects several points, all the individual point features seem to union into one multipoint feature fine. It's just this "Add to Selection" and the operation of merging point(s) with multipoints that doesn't work for me. Your help is appreciated. 🙂

Gary