/// <summary>
/// Initializes chart data from a sample data table.
/// </summary>
protected void InitializeChartData(int totalXValues)
{
// Create a sample table:
DataTable tableSource = this.CreateLargeTable(totalXValues);
//Initializes new chart series.
ChartSeries series = new ChartSeries("population", ChartSeriesType.Spline);
// Instantiate the Model that "dilutes" the large set of data points based on the current chart width. Instead of just skipping
// points, this model uses an average of a set of points and uses those averages instead of the points.
this.model = new ChartOversizedDataBindModel(this.chartControl1, tableSource, "X", "Y");
// Update chart settings based on the Model:
this.InitChartBasedOnModel(model);
// Assign this data model to the new series.
series.SeriesModel = model;
//Adds the series to the ChartSeriesCollection.
this.chartControl1.Series.Add(series);
this.UpdateChartTitle();
series.PrepareStyle += new ChartPrepareStyleInfoHandler(series_PrepareStyle);
this.chartControl1.EnableXZooming = true;
model.DilutionFactorChanged += new EventHandler(model_DilutionFactorChanged);
this.chartControl1.ChartFormatAxisLabel += new ChartFormatAxisLabelEventHandler(ChartWebControl1_ChartFormatAxisLabel);
}
void model_DilutionFactorChanged(object sender, EventArgs e)
{
// Could happen when chart resizes or zoomed in.
this.UpdateChartTitle();
ChartOversizedDataBindModel model = sender as ChartOversizedDataBindModel;
this.chartControl1.PrimaryXAxis.Range = new MinMaxInfo(0, model.Count, (int)(model.Count / 10));
}
private void InitChartBasedOnModel(ChartOversizedDataBindModel model)
{
this.chartControl1.PrimaryXAxis.ValueType = ChartValueType.Double;
this.chartControl1.PrimaryXAxis.RangeType = ChartAxisRangeType.Set;
this.chartControl1.PrimaryXAxis.Range = new MinMaxInfo(0, model.Count, (int)(model.Count / 10));
this.chartControl1.PrimaryYAxis.RangeType = ChartAxisRangeType.Set;
double maxY = model.GetMaxY();
this.chartControl1.PrimaryYAxis.Range = new MinMaxInfo(0, maxY, (int)(maxY / 10));
}
/// <summary>
/// Initializes chart data from access database.
/// </summary>
protected void InitializeChartData()
{
int yMax = 100;
int totalXValues = 100000;
DataTable tableSource = this.CreateLargeTable(totalXValues, yMax);
#region MASTERCHART
//Sets the value type and of the axes. Setting this ensures that the ranges stay consistent as you zoom into the chart.
// Master Chart
this.SetChartRange(this.chartControl1.PrimaryXAxis, new MinMaxInfo(0, totalXValues, totalXValues / 10));
this.SetChartRange(this.chartControl1.PrimaryYAxis, new MinMaxInfo(0, yMax, yMax / 10));
//Initializes new chart series.
ChartSeries series = new ChartSeries();
series.Name = "Population";
series.Type = ChartSeriesType.Spline;
// Model that "dilutes" the large set of data points based on the current chart width. Instead of just skipping
// points, this model uses an average of a set of points.
ChartOversizedDataBindModel model = new ChartOversizedDataBindModel(this.chartControl1, tableSource, "X", "Y", false);
// Assign this data model to the new series.
series.SeriesModel = model;
model.DilutionFactorChanged += new EventHandler(model_DilutionFactorChanged);
//Adds the series to the ChartSeriesCollection.
this.chartControl1.Series.Add(series);
this.chartControl1.EnableXZooming = true;
SetStripLine(0, 10000);
#endregion
#region DETAILCHART
// Detail Chart
this.SetChartRange(this.chartControl2.PrimaryXAxis, new MinMaxInfo(0, totalXValues / 10, totalXValues / 100));
this.SetChartRange(this.chartControl2.PrimaryYAxis, new MinMaxInfo(0, yMax, yMax / 10));
ChartSeries series2 = new ChartSeries();
series2.Name = "Population";
series2.Type = ChartSeriesType.Spline;
ChartOversizedDataBindModel model2 = new ChartOversizedDataBindModel(this.chartControl2, tableSource, "X", "Y");
// Assign this data model to the new series.
series2.SeriesModel = model2;
model2.DilutionFactorChanged += new EventHandler(model_DilutionFactorChanged);
this.chartControl2.Series.Add(series2);
#endregion
this.UpdateChartSubTitles();
}
void ChartWebControl1_ChartFormatAxisLabel(object sender, ChartFormatAxisLabelEventArgs e)
{
if (e.AxisOrientation == ChartOrientation.Horizontal)
{
// Here we customize the label text for a point by getting the text from the model:
ChartOversizedDataBindModel model = this.chartControl1.Series[0].SeriesModel as ChartOversizedDataBindModel;
int index = (int)e.Value;
if (model != null && index < model.Count)
{
// The fact that the data type is DateTiem is based on our knowledge of the bound data source.
DateTime date = (DateTime)model.GetXData((int)e.Value);
e.Label = this.GetFormattedLabelText(date);
}
else
{
e.Label = String.Empty;
}
e.Handled = true;
}
}
