private InMemoryGridIsoLineLayer GetGridIsoLineLayer()
        {
            //Create a grid cell matrix based on the textboxes and the current extent
            CreateGridCellMatrix();

            //Load the grid we just created into the GridIsoLineLayer using the number of breaks defines
            //on the screen
            Collection<double> isoLineLevels = GridIsoLineLayer.GetIsoLineLevels(wellDepthPointData, Convert.ToInt32(txtGridIsoLineLevelCount.Text));
            InMemoryGridIsoLineLayer isoLineLayer = new InMemoryGridIsoLineLayer(gridCellMatrix, isoLineLevels, 0, double.MaxValue, -9999, IsoLineType.ClosedLinesAsPolygons);

            //Create a series of colors from blue to red that we will use for the breaks
            Collection<GeoColor> colors = GeoColor.GetColorsInQualityFamily(GeoColor.StandardColors.Blue, GeoColor.StandardColors.Red, isoLineLevels.Count, ColorWheelDirection.Clockwise);
            colors[0] = GeoColor.SimpleColors.Red;
            colors[1] = GeoColor.SimpleColors.Blue;
            colors[2] = GeoColor.SimpleColors.Green;
            colors[3] = GeoColor.StandardColors.Cyan;
            colors[4] = GeoColor.SimpleColors.Yellow;
            colors[5] = GeoColor.SimpleColors.Orange;


            //Setup a class break style based on the isoline levels and the colors
            ClassBreakStyle classBreakLineStyle = new ClassBreakStyle(isoLineLayer.DataValueColumnName);
            AreaStyle firstStyle = new AreaStyle(new GeoPen(colors[0], 3), new GeoSolidBrush(colors[0]));
            classBreakLineStyle.ClassBreaks.Add(new ClassBreak(double.MinValue, firstStyle));
            for (int i = 0; i < colors.Count - 1; i++)
            {
                AreaStyle style = new AreaStyle(new GeoPen(colors[i + 1], 3), new GeoSolidBrush(colors[i + 1]));
                classBreakLineStyle.ClassBreaks.Add(new ClassBreak(isoLineLevels[i], style));
            }
            isoLineLayer.CustomStyles.Add(classBreakLineStyle);

            //Create the text styles to label the lines
            TextStyle textStyle = TextStyles.CreateSimpleTextStyle(isoLineLayer.DataValueColumnName, "Arial", 8, DrawingFontStyles.Bold, GeoColor.StandardColors.Black, 0, 0);
            textStyle.HaloPen = new GeoPen(GeoColor.StandardColors.White, 2);
            textStyle.OverlappingRule = LabelOverlappingRule.NoOverlapping;
            textStyle.SplineType = SplineType.StandardSplining;
            textStyle.DuplicateRule = LabelDuplicateRule.UnlimitedDuplicateLabels;
            textStyle.TextLineSegmentRatio = 9999999;
            textStyle.FittingLineInScreen = true;
            textStyle.SuppressPartialLabels = true;
            isoLineLayer.CustomStyles.Add(textStyle);

            return isoLineLayer;
        }