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<font color= "blue">using</font> System;
<font color= "blue">using</font> System.Drawing;
<font color= "blue">using</font> System.Drawing.Imaging;
<font color= "blue">using</font> System.IO;
<font color= "blue">using</font> ASPNET.StarterKit.Chart;
<font color= "blue"></font>
<font color= "blue">namespace</font> ASPNET.StarterKit.Reports
<font color= "blue"></font>{
<font color= "green"> /// <summary></font>
<font color= "green"> /// Summary description for ChartGenerator.</font>
<font color= "green"> /// </summary></font>
<font color= "blue"> public class</font> ChartGenerator : System.Web.UI.Page
<font color= "blue"> </font>{
<font color= "blue"> private void</font> Page_Load(object sender, System.EventArgs e)
<font color= "blue"> </font>{
<font color= "green"> // set return type to png image format</font>
<font color= "blue"> </font>Response.ContentType = "image/png";
<font color= "blue"></font>
<font color= "blue"> </font>string xValues, yValues, chartType, print;
<font color= "blue"> </font>bool boolPrint;
<font color= "blue"></font>
<font color= "green"> // Get input parameters from query string</font>
<font color= "blue"> </font>chartType = Request.QueryString["chartType"];
<font color= "blue"> </font>xValues = Request.QueryString["xValues"];
<font color= "blue"> </font>yValues = Request.QueryString["yValues"];
<font color= "blue"> </font>print = Request.QueryString["Print"];
<font color= "blue"></font>
<font color= "blue"></font><font color= "blue"> if </font>(chartType == null)<font color= "blue"></font>
<font color= "blue"> </font>chartType = "";
<font color= "blue"></font>
<font color= "green"> // check for printing option </font>
<font color= "blue"></font><font color= "blue"> if </font>(print == null)<font color= "blue"></font>
<font color= "blue"> </font>boolPrint = false;
<font color= "blue"></font><font color= "blue"> else</font><font color= "blue"></font>
<font color= "blue"> </font>{
<font color= "blue"> try</font>
<font color= "blue"> </font>{
<font color= "blue"> </font>boolPrint = Convert.ToBoolean(print);
<font color= "blue"> </font>}
<font color= "blue"> catch</font>
<font color= "blue"> </font>{
<font color= "blue"> </font>boolPrint = false;
<font color= "blue"> </font>}
<font color= "blue"> </font>}
<font color= "blue"></font>
<font color= "blue"></font><font color= "blue"> if </font>(xValues != null && yValues != null)<font color= "blue"></font>
<font color= "blue"> </font>{
<font color= "blue"> </font>Color bgColor;
<font color= "blue"></font>
<font color= "blue"></font><font color= "blue"> if </font>(boolPrint)<font color= "blue"></font>
<font color= "blue"> </font>bgColor = Color.White;
<font color= "blue"></font><font color= "blue"> else</font><font color= "blue"></font>
<font color= "blue"> </font>bgColor = Color.FromArgb(255,253,244);
<font color= "blue"></font>
<font color= "blue"> </font>Bitmap StockBitMap;
<font color= "blue"> </font>MemoryStream memStream = new MemoryStream();
<font color= "blue"></font>
<font color= "blue"> switch</font> (chartType)
<font color= "blue"> </font>{
<font color= "blue"> case</font> "bar":
<font color= "blue"> </font>BarGraph bar = new BarGraph(bgColor);
<font color= "blue"> </font>
<font color= "blue"> </font>bar.VerticalLabel = "$";
<font color= "blue"> </font>bar.VerticalTickCount = 5;
<font color= "blue"> </font>bar.ShowLegend = true;
<font color= "blue"> </font>bar.ShowData = false;
<font color= "blue"> </font>bar.Height = 400;
<font color= "blue"> </font>bar.Width = 700;
<font color= "blue"></font>
<font color= "blue"> </font>bar.CollectDataPoints(xValues.Split("|".ToCharArray()), yValues.Split("|".ToCharArray()));
<font color= "blue"> </font>StockBitMap = bar.Draw();
<font color= "blue"> </font>break;
<font color= "blue"> </font>default:
<font color= "blue"> </font>PieChart pc = new PieChart(bgColor);
<font color= "blue"> </font>
<font color= "blue"> </font>pc.CollectDataPoints(xValues.Split("|".ToCharArray()),yValues.Split("|".ToCharArray()));
<font color= "blue"></font>
<font color= "blue"> </font>StockBitMap = pc.Draw();
<font color= "blue"></font>
<font color= "blue"> </font>break;
<font color= "blue"> </font>}
<font color= "blue"></font>
<font color= "green"> // This is a quick check for referrer server name against host server</font>
<font color= "green"> // For best security practice in a deployed application, an authenticating mechanism should be in placed.</font>
<font color= "green"> // Image should only be rendered for authenticated users only.</font>
<font color= "blue"></font><font color= "blue"> if </font>(Request.UrlReferrer != null &&((Request.UrlReferrer.Host.ToLower() == Environment.UserDomainName.ToLower()) <font color= "blue"></font>
<font color= "blue"> </font>|| Request.UrlReferrer.Host.ToLower() == "localhost"))
<font color= "blue"> </font>{
<font color= "green"> // Render BitMap Stream Back To Client</font>
<font color= "blue"> </font>StockBitMap.Save(memStream, ImageFormat.Png);
<font color= "blue"> </font>memStream.WriteTo(Response.OutputStream);
<font color= "blue"> </font>}
<font color= "blue"></font>
<font color= "blue"> </font>}
<font color= "blue"> </font>}
<font color= "blue"></font>
<font color= "blue"> </font>#region Web Form Designer generated code
<font color= "blue"> </font>override protected void OnInit(EventArgs e)
<font color= "blue"> </font>{
<font color= "green"> //</font>
<font color= "green"> // CODEGEN: This call is required by the ASP.NET Web Form Designer.</font>
<font color= "green"> //</font>
<font color= "blue"> </font>InitializeComponent();
<font color= "blue"> </font>base.OnInit(e);
<font color= "blue"> </font>}
<font color= "blue"> </font>
<font color= "green"> /// <summary></font>
<font color= "green"> /// Required method for Designer support - do not modify</font>
<font color= "green"> /// the contents of this method with the code editor.</font>
<font color= "green"> /// </summary></font>
<font color= "blue"> private void</font> InitializeComponent()
<font color= "blue"> </font>{
<font color= "blue"> </font>this.Load += new System.EventHandler(this.Page_Load);
<font color= "blue"> </font>}
<font color= "blue"> </font>#endregion
<font color= "blue"> </font>}
<font color= "blue"></font>}
</pre>
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