How can I get the difference between two features?

[takuya.azuma]

Hello.

I'm studying AutoCAD Map 3D 2017 Platform API  in C# and making sample program.

I want to get the difference between the feature being updated and the original one occuring AcMapFeatureService.FeatureToBeUpdated event, however AcMapFeature class, which Get(Original)Feature()#AcMapFeatureToBeEventArgs returns, does not have geometric values.

Using this class, I  want to get how much it moves from the original position.

Here is my code.

var fs = AcMapServiceFactory.GetService(MgServiceType.FeatureService) as AcMapFeatureService;

fs.FeatureToBeUpdated += (sender, args) =>
{
    var originalFeature = args.GetOriginalFeature();
    var updatedFeature = args.GetFeature();

    // get the difference
}

Anyone knows how to do that? Or another solution exists? Any comments would be gratefully appreciated. Thank you.

[takuya.azuma · Accepted solution]

Sorry, I could get concrete values by casting MgProperty into Mg○○Property like MgInt32Property.