protected void Page_Load(object sender, System.EventArgs e)
{
nChartControl1.AjaxToolsFactoryType = "NCustomToolFactory";
if (nChartControl1.RequiresInitialization)
{
NCustomToolsData.NData data = NCustomToolsData.Read();
nChartControl1.BackgroundStyle.FrameStyle.Visible = false;
nChartControl1.Charts.Clear();
// display the female population chart
NCartesianChart fChart = new NCartesianChart();
fChart.SetPredefinedChartStyle(PredefinedChartStyle.HorizontalRight);
fChart.Margins = new NMarginsL(9, 0, 0, 0);
fChart.Location = new NPointL(
new NLength(0, NRelativeUnit.ParentPercentage),
new NLength(0, NRelativeUnit.ParentPercentage));
fChart.Size = new NSizeL(
new NLength(54.21f, NRelativeUnit.ParentPercentage),
new NLength(100, NRelativeUnit.ParentPercentage));
nChartControl1.Charts.Add(fChart);
InitializeChartData(fChart, data.TotalFemaleData, true, Color.Pink);
NAxis axisX = fChart.Axis(StandardAxis.PrimaryX);
NLinearScaleConfigurator scaleX = axisX.ScaleConfigurator as NLinearScaleConfigurator;
scaleX.CustomLabelsLevelOffset = new NLength(4);
int nRowCount = data.TotalMaleData.Rows.Count;
for (int i = 0; i < nRowCount; i++)
{
NCustomToolsData.NPopulationDataEntry en = data.TotalMaleData.Rows[i];
double begin = en.AgeRange.Start;
double end = en.AgeRange.End + 1;
scaleX.CustomLabels.Add(new NCustomValueLabel((begin + end) / 2, en.AgeRange.Title));
}
// display the male population chart
NCartesianChart mChart = new NCartesianChart();
mChart.SetPredefinedChartStyle(PredefinedChartStyle.HorizontalLeft);
mChart.Margins = new NMarginsL(0, 0, 9, 0);
mChart.Location = new NPointL(
new NLength(55.5f, NRelativeUnit.ParentPercentage),
new NLength(0, NRelativeUnit.ParentPercentage));
mChart.Size = new NSizeL(
new NLength(44.8f, NRelativeUnit.ParentPercentage),
new NLength(100, NRelativeUnit.ParentPercentage));
nChartControl1.Charts.Add(mChart);
InitializeChartData(mChart, data.TotalMaleData, false, Color.SkyBlue);
}
}
void IHttpHandler.ProcessRequest(HttpContext context)
{
int populationDataId;
int dataPointId;
if (context.Request["id"] == null)
{
return;
}
string[] tokens = context.Request["id"].Split(new char[] { ':' }, StringSplitOptions.RemoveEmptyEntries);
if (tokens.Length != 2)
{
return;
}
if (!int.TryParse(tokens[0], out populationDataId))
{
return;
}
if (!int.TryParse(tokens[1], out dataPointId))
{
return;
}
NCustomToolsData.NData data = NCustomToolsData.Read();
MemoryStream ms = new MemoryStream();
NSize chartSize = new NSize(500, 200);
NDocument document = CreateDocument(chartSize, data, populationDataId, dataPointId);
NPngImageFormat imageFormat = new NPngImageFormat();
using (INImage image = CreateImage(document, chartSize, imageFormat))
{
document.Refresh();
image.SaveToStream(ms, imageFormat);
}
byte[] bytes = ms.GetBuffer();
context.Response.ContentType = "image/png";
context.Response.OutputStream.Write(bytes, 0, bytes.Length);
context.Response.Cache.SetCacheability(HttpCacheability.ServerAndPrivate);
}