How to update Acreage field after edit the polygon's geometry?

weiliang

Hi,

I have an Acres filed for a polygon feature class. After I edit its vertices (which changes its geometry), I want the Acres field value could dynamically been updated. How can I reference the polygon in the code which is been selected to change the vertics?

I have similar problem of changing long/lat fields dynamically for the point data.

BTW, I know that I should use geometry service to calculate the area.

Thanks for your help in advance.

Wei

JenniferNery

Are you using Editor.EditVertices? If so, you can subscribe to Editor.EditCompleted event.

private void Editor_EditCompleted(object sender,Editor.EditEventArgs e)
{
 if (e.Action == Editor.EditAction.EditVertices)
 {
  foreach(var edit in e.Edits)
   //TODO: use this edit.Graphic
 }
}

If you are performing the geometry edit yourself, I imagine you are using some layer mouse events to get to select a graphic for editing.

private void FeatureLayer_MouseLeftButtonDown(object sender, GraphicMouseButtonEventArgs e)
{
 //TODO use e.Graphic
}