New Post: Why is point size and Labels only applies to first feature of the layer ?

Hi,

I have a function that gets XY data from a datagridview and then plot the points on a map. I want to change the point size and add labels, but my code only change the size of 1 points and add correct label for 1 point too (all other points are labeled "0").

My code:

            var sf = new Shapefile();

            // MWShapeId field will be added to attribute table
            sf.CreateNewWithShapeID("", ShpfileType.SHP_POINT);

            var rows = dgv.SelectedRows;
            int idx = 0;
            foreach (DataGridViewRow row in rows)
            {
                string raw_x = row.Cells[dgv.Columns["x_coord"].Index].Value.ToString();
                string raw_y = row.Cells[dgv.Columns["y_coord"].Index].Value.ToString();
                double value = Convert.ToDouble(row.Cells[dgv.Columns["value"].Index].Value);

                int field_idx = sf.EditAddField("value", FieldType.DOUBLE_FIELD, 0, 10);
                
                var pnt = new Point();
                pnt.x = Convert.ToDouble(raw_x);
                pnt.y = Convert.ToDouble(raw_y);

                Shape shp = new Shape();
                shp.Create(ShpfileType.SHP_POINT);
                shp.InsertPoint(pnt, 0);

                sf.EditInsertShape(shp, ref idx);
                sf.EditCellValue(field_idx, idx, value);
                idx++;

            }

            var sc_id = rows[0].Cells[dgv.Columns["sc_uid"].Index].Value.ToString();

            // get projection in database
            string getProjection = String.Format("select proj_zoneutm from projects " +
                                                 "inner join results on projects.proj_num = results.proj_num " +
                                                 "where sc_uid = '{0}';", sc_id);

            List<string> proj = new List<string>();
            NpgsqlDataReader data = dbConn.ExecuteReader(getProjection);

            while (data.Read()) {
                proj.Add(data.GetString(0));
            }
            
            var gp = new GeoProjection();
            gp.ImportFromEPSG(Convert.ToInt16(proj[0]));
            axMap1.GeoProjection = gp;


            sf.DefaultDrawingOptions.SetDefaultPointSymbol(tkDefaultPointSymbol.dpsCircle);

            // call function to create categories and add color scheme
            sf = CreateCategories(sf, "value");
            
            // generate labels for field "value"
            sf.Labels.Generate("[value]", tkLabelPositioning.lpInteriorPoint, true);

            var lyr_hdl = axMap1.AddLayer(sf, true);

            axMap1.set_ShapeLayerPointSize(lyr_hdl, 20);
            
            axMap1.ZoomToMaxExtents();

            // save if needed
            //sf.SaveAs(@"c:\points.shp", null);
        }

Here is the results on the map:
Image may be NSFW.
Clik here to view.

Anyone have an idea why it is happening ?


Thanks !