//temporary, for use generating a shape file for each huc 8
        private void button8_Click(object sender, EventArgs e)
        {
            filePath = "";
            filePath = textBox1.Text;

            if (filePath == "")
            {
                MessageBox.Show("Please select a file path");
                return;
            }

            //export rectangle as shapefile
            Boolean         overwrite   = true;
            FeatureSet      copy        = null;
            FeatureSet      fs          = (FeatureSet)map.Layers[map.Layers.Count - 1].DataSet;
            List <IFeature> featureList = null;

            //identify selected watershed and export as shapefile
            foreach (IFeatureLayer item2 in map.GetFeatureLayers())
            {
                try {
                    IFeatureLayer ifea = item2 as IFeatureLayer;
                    if (ifea.Selection.Count > 0)
                    {
                        ifea.SelectAll();
                        featureList = ifea.Selection.ToFeatureList();
                    }
                }
                catch {
                }
            }

            if (fs == null && copy == null)
            {
                MessageBox.Show("Please select a feature on the map or draw a region");
                return;
            }

            for (int i = 0; i < featureList.Count; i++)
            {
                //save shape file
                IFeature ifea  = featureList[i];
                IFeature ifea2 = ifea.Centroid();
                IList <DotSpatial.Topology.Coordinate> centroid = ifea2.Coordinates;
                System.IO.Directory.CreateDirectory(filePath + "\\" + i);
                string newFilePath = filePath + "\\" + i + "\\" + "a" + centroid[0].X + "_" + centroid[0].Y + ".shp";
                fs = new FeatureSet();
                fs.AddFeature(ifea);
                fs.SaveAs(newFilePath, overwrite);

                //modify shape file

                // Compose a string consisting of EPSG WKT for web mercator
                string lines = "PROJCS[\"WGS 84 / Pseudo-Mercator\",\r\n  GEOGCS[\"WGS 84\",\r\n    DATUM[\"World Geodetic System 1984\",\r\n      SPHEROID[\"WGS 84\", 6378137.0, 298.257223563, AUTHORITY[\"EPSG\",\"7030\"]],\r\n      AUTHORITY[\"EPSG\",\"6326\"]],\r\n    PRIMEM[\"Greenwich\", 0.0, AUTHORITY[\"EPSG\",\"8901\"]],\r\n    UNIT[\"degree\", 0.017453292519943295],\r\n    AXIS[\"Geodetic longitude\", EAST],\r\n    AXIS[\"Geodetic latitude\", NORTH],\r\n    AUTHORITY[\"EPSG\",\"4326\"]],\r\n  PROJECTION[\"Popular Visualisation Pseudo Mercator\", AUTHORITY[\"EPSG\",\"1024\"]],\r\n  PARAMETER[\"semi_minor\", 6378137.0],\r\n  PARAMETER[\"latitude_of_origin\", 0.0],\r\n  PARAMETER[\"central_meridian\", 0.0],\r\n  PARAMETER[\"scale_factor\", 1.0],\r\n  PARAMETER[\"false_easting\", 0.0],\r\n  PARAMETER[\"false_northing\", 0.0],\r\n  UNIT[\"m\", 1.0],\r\n  AXIS[\"Easting\", EAST],\r\n  AXIS[\"Northing\", NORTH],\r\n  AUTHORITY[\"EPSG\",\"3857\"]]";

                // Write the string to the .prj file
                newFilePath = newFilePath.Remove(newFilePath.Length - 3) + "prj";
                System.IO.StreamWriter file = new System.IO.StreamWriter(newFilePath);
                file.WriteLine(lines);
                file.Close();
            }

            this.Hide();
        }