Dear all,
I want to check whether I can determine the geometry type of the new created feature, is it a point, polyline or polygon?
I am using vb.net and arcmap 10.2.1, thanks.
Hi,
so you're looking for a way to run code each time a new feature is created in an edit-session ? This can be done by using Editor-events (see "ArcGIS Desktop editing for developers" in the online help): the editor object that handles editing tasks in ArcMap owns an event "OnCreateFeature" where you can react on new features inserted by the user.
I hope this helps you and meets your needs. Otherwise please give some more informations about the workflow you want to support.
Frank
you could check the GeometryType of the Shape-property of IFeature:
IFeature feature = CreateFeatureOfUnknownType();
//do some null-checks here
//then
switch(feature.Shape.GeometryType)
{
case ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolygon:
//blah
break;
case ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolyline:
//blahblah
//etc
}
Thank you Frank for the quick reply.
I convert the code you provided to vb.net and insert into my vb.net project.
But I get an error:
'CreateFeatureOfUnknownType' is not declared. Is there any library need to import?
Sorry - "CreateFeatureOfUnknownType" is no existing function, it's a placeholder in this example for the function you are using to create your feature.
Hi Frank,
I am creating feature in arcmap, not arcobjects.
Sorry to trouble you. I have followed the sample code from : http://resources.esri.com/help/9.3/arcgisengine/arcobjects/esriEditor/IEditEvents_OnCreateFeature.htm
I can determine when the new feature is created, but I don't know how to get the geometry type, any hints? So sorry I know little about arcobjects.
Hi Li,
no problem. In the event-handler OnCreateFeature you receive the parameter "obj" of type IObject. IFeature inherites from IObject - in this case the parameter obj is an IFeature so that you can cast obj to IFeature and use the code above to check the GeometryType.
I'm no vb-crack but I guess it should look like this (at least similar):
Private Sub OnCreateFeature(ByVal obj As ESRI.ArcGIS.Geodatabase.IObject) Dim feature as IFeature feature = DirectCast(obj, IFeature) if feature.Shape.GeometryType = ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolygon then 'do something with a polygonfeature else etc. ... End Sub
regards
Any idea on how to get the layer name of the new created feature? Thanks.
I didn't checked it by myself but I think the following should work: the editor implements the interface IEditLayers which contains the property CurrentLayer. This is the layer the user selected to add the new feature:
Dim uid As UID
uid = New UIDClass()
uid.Value = "esriEditor.Editor"
Dim editor As IEditor
editor = CType(m_application.FindExtensionByCLSID(uid), IEditor)
Dim editLayers as IEditLayers
editLayers = CType(editor, IEditLayers)
Dim layer as ILayer
layer = editLayers.CurrentLayer
et voila ....
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