topic Want to Create a Select by Rectangle in ArcObjects using C# in ArcObjects SDK Questions

Want to Create a Select by Rectangle in ArcObjects using C#

ThomasHasselbeck — Thu, 24 Jul 2014 23:27:49 GMT

I'm creating an Add-in using ArcObjects and C#, technology I haven't used in 10 plus years.

I'm creating 3 tools that work on a specific polygon layer.

Tool 1 - Select by Line; summarize selected polygon areas

Tool 2 - Select by Polygon; summarize selected polygon areas

Tool 3 - Select by Rectangle; summarize selected polygon areas

I found this sample;

ArcObjects Help for .NET developers‌

...and it works great for selecting my polygons using a line.

I was able to convert it pretty easily to selecting my polygons by using a polygon.

I changed theses lines;

private INewLineFeedback m_lineFeedback;

IPolyline polyline;

private INewPolygonFeedback m_lineFeedback;

IPolygon polygon;

(and fixed all the errors that were generated.)

Now I want to do something like this;

private INewRectangleFeedback m_lineFeedback;

IRectangle rectangle;

It doesn't appear to be the same animal.

Can anyone give me a nudge as to the interfaces I need to implement?

I know I have to change some of the logic as well, since I'm not expecting a double click event (as shown in the sample).

Thanks

Tom

Re: Want to Create a Select by Rectangle in ArcObjects using C#

JeffMatson — Fri, 25 Jul 2014 16:44:19 GMT

INewRectangleFeedback.Stop returns an IGeometry object...you can test to see what type of IGeometry was returned, cast it to the correct type of object, and proceed from there.

Re: Want to Create a Select by Rectangle in ArcObjects using C#

ThomasHasselbeck — Thu, 14 Aug 2014 18:30:50 GMT

Hi Jeff -

Thanks for the reply. I actually punted on this approach and took advantage of the selection set create by the all the native selection tools. My Add-in simply does a summarize on the current selection set. Dropped from 3 tools to one.

All the best

Tom