/// <summary>
/// Event fired when chart picture is going to be painted.
/// </summary>
/// <param name="sender">Sender object.</param>
/// <param name="e">Event arguments.</param>
private void ChartPicture_BeforePaint(object sender, ChartPaintEventArgs e)
{
// Prepare series for drawing
int markerIndex = 1;
for (int index = 0; index < Series.Count; index++)
{
Series series = Series[index];
// Reset series "X values are zeros" flag
series.xValuesZerosChecked = false;
series.xValuesZeros = false;
// Set series colors from palette
IChartType chartType = e.CommonElements.ChartTypeRegistry.GetChartType(series.ChartTypeName);
bool paletteColorsInPoints = chartType.ApplyPaletteColorsToPoints;
// if the series palette is set the we can color all data points, even on column chart.
if (series.Palette != ChartColorPalette.None)
{
paletteColorsInPoints = true;
}
PrepareData(
paletteColorsInPoints,
series.Name);
// Clear temp. marker style
if (series.tempMarkerStyleIsSet)
{
series.MarkerStyle = MarkerStyle.None;
series.tempMarkerStyleIsSet = false;
}
// Set marker style for chart types based on markes
if (chartType.GetLegendImageStyle(series) == LegendImageStyle.Marker && series.MarkerStyle == MarkerStyle.None)
{
series.MarkerStyle = (MarkerStyle)markerIndex++;
series.tempMarkerStyleIsSet = true;
if (markerIndex > 9)
{
markerIndex = 1;
}
}
}
}
/// <summary>
/// Event fired after chart picture was painted.
/// </summary>
/// <param name="sender">Sender object.</param>
/// <param name="e">Event arguments.</param>
private void ChartPicture_AfterPaint(object sender, ChartPaintEventArgs e)
{
ChartService control = Common.Chart;
if (control != null)
{
// Clean up series after drawing
for (int index = 0; index < Series.Count; index++)
{
Series series = Series[index];
if (series.UnPrepareData())
{
--index;
}
}
}
}