void Map1_MapClick(object sender, MapClickWpfMapEventArgs e)
        {
            Collection<Feature> clickedFeatures = shpLayer.FeatureSource.GetFeaturesNearestTo(new PointShape(e.WorldX, e.WorldY), GeographyUnit.DecimalDegree, 1, new Collection<string>(), 10, DistanceUnit.Kilometer);
            PointShape point = clickedFeatures[0].GetShape() as PointShape;
            point.X += yourXOffset;
            point.Y += yourYOffset;
            clickedFeatures[0].WellKnownBinary = point.GetWellKnownBinary();

            shpLayer.FeatureSource.BeginTransaction();
            shpLayer.FeatureSource.UpdateFeature(clickedFeatures[0]);
            shpLayer.FeatureSource.CommitTransaction();

            if (clickedFeatures.Count > 0)
            {
                inmLayer.InternalFeatures.Clear();
                inmLayer.InternalFeatures.Add(clickedFeatures[0]);
            }
            Map1.Refresh();
        }