public SemiPie ()
		{
			SFChart chart 						= new SFChart ();
			chart.Legend.Visible 				= true;
			ChartSemiPieDataSource dataModel 	= new ChartSemiPieDataSource ();
			chart.DataSource 					= dataModel as SFChartDataSource;
			chart.Legend.DockPosition 			= SFChartLegendPosition.Bottom;
			chart.Title.Text 					= new NSString ("Products Growth - 2015");
			this.control = chart;
		}
        public SemiPie()
        {
            SFChart chart = new SFChart();

            chart.Legend.Visible = true;
            ChartSemiPieDataSource dataModel = new ChartSemiPieDataSource();

            chart.DataSource          = dataModel as SFChartDataSource;
            chart.Legend.DockPosition = SFChartLegendPosition.Bottom;
            chart.Title.Text          = new NSString("Products Growth - 2015");
            this.control = chart;
        }