Race to Linux - Race 3: Reports Starter Kit using Mono SqlServer/Firebird

using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using ASPNET.StarterKit.Chart;

namespace ASPNET.StarterKit.Reports
{
	/// <summary>
	/// Summary description for ChartGenerator.
	/// </summary>
	public class ChartGenerator : System.Web.UI.Page
	{
		private void Page_Load(object sender, System.EventArgs e)
		{
			// This is a quick check for referrer server name against host server
			// For best security practice in a deployed application, an authenticating mechanism should be in placed.
			// Image should only be rendered for authenticated users only.
			//if (Request.UrlReferrer != null &&((Request.UrlReferrer.Host.ToLower() == Environment.UserDomainName.ToLower()) 
			//	|| Request.UrlReferrer.Host.ToLower() == "localhost"))
			//{ 

				// set return type to png image format
				Response.ContentType = "image/png";

				string xValues, yValues, chartType, print;
				bool boolPrint;

				// Get input parameters from query string
				chartType = Request.QueryString["chartType"];
				xValues = Request.QueryString["xValues"];
				yValues = Request.QueryString["yValues"];
				print = Request.QueryString["Print"];

				if (chartType == null)
					chartType = "";

				// check for printing option 
				if (print == null)
					boolPrint = false;
				else
				{
					try
					{
						boolPrint = Convert.ToBoolean(print);
					}
					catch
					{
						boolPrint = false;
					}
				}

				if (xValues != null && yValues != null)
				{
					Color bgColor;

					if (boolPrint)
						bgColor = Color.White;
					else
						bgColor = Color.FromArgb(255,253,244);

					Bitmap StockBitMap;
					MemoryStream memStream = new MemoryStream();

					switch (chartType)
					{
						case "bar":

							BarGraph bar = new BarGraph(bgColor);
						
							bar.VerticalLabel = "$";
							bar.VerticalTickCount = 5;
							bar.ShowLegend = true;
							bar.ShowData = false;
							bar.Height = 400;
							bar.Width = 700;

							bar.CollectDataPoints(xValues.Split("|".ToCharArray()), yValues.Split("|".ToCharArray()));
							StockBitMap = bar.Draw();
							break;
						default:

							PieChart pc = new PieChart(bgColor);
	
							pc.CollectDataPoints(xValues.Split("|".ToCharArray()),yValues.Split("|".ToCharArray()));

							StockBitMap = pc.Draw();

							break;
					}

					// Render BitMap Stream Back To Client

					StockBitMap.Save(memStream, ImageFormat.Png);
					memStream.WriteTo(Response.OutputStream);
				}
			//}
		}

		#region Web Form Designer generated code
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: This call is required by the ASP.NET Web Form Designer.
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{    
			this.Load += new System.EventHandler(this.Page_Load);
		}
		#endregion
	}
}