private void inventoryChart_ObjectSelected(object sender, DevExpress.XtraCharts.HotTrackEventArgs e)
{
if (e.HitInfo.InSeries && e.AdditionalObject is SeriesPoint)
{
SeriesPoint currentPoint = (SeriesPoint)e.AdditionalObject;
if (currentPoint.Tag.GetType() == typeof(InventoryChart.BO.CategoryItem))
{
InventoryChart.BO.CategoryItem currentCategory = (InventoryChart.BO.CategoryItem)currentPoint.Tag;
int categoryID = currentCategory.CategoryID;
DataFilter currentCategoryFilter = new DataFilter("ProductItems.CategoryID", "System.Int32", DataFilterCondition.Equal, categoryID);
this.inventoryChart.Series["ProductUnits"].DataFilters.Clear();
this.inventoryChart.Series["ProductUnits"].DataFilters.Add(currentCategoryFilter);
this.inventoryChart.Series["CategoryUnits"].Visible = false;
this.inventoryChart.Series["ProductUnits"].Visible = true;
this.inventoryChart.Legend.AlignmentHorizontal = LegendAlignmentHorizontal.RightOutside;
this.inventoryChart.Legend.AlignmentVertical = LegendAlignmentVertical.Center;
this.inventoryChart.Annotations[0].Visible = true;
PieSeriesView view = (PieSeriesView)this.inventoryChart.Series["ProductUnits"].View;
view.Titles[0].Text = currentCategory.CategoryName;
}
}
else if (e.HitInfo.InAnnotation && e.Object is TextAnnotation)
{
this.inventoryChart.Annotations[0].Visible = false;
this.inventoryChart.Series["CategoryUnits"].Visible = true;
this.inventoryChart.Series["ProductUnits"].Visible = false;
this.inventoryChart.Legend.AlignmentHorizontal = LegendAlignmentHorizontal.Center;
this.inventoryChart.Legend.AlignmentVertical = LegendAlignmentVertical.TopOutside;
}
}
private void inventoryChart_CustomDrawCrosshair(object sender, CustomDrawCrosshairEventArgs e)
{
foreach (CrosshairElement element in e.CrosshairElements)
{
SeriesPoint currentPoint = element.SeriesPoint;
if (currentPoint.Tag.GetType() == typeof(InventoryChart.BO.CategoryItem))
{
InventoryChart.BO.CategoryItem currentCategory = (InventoryChart.BO.CategoryItem)currentPoint.Tag;
List <InventoryChart.BO.ProductItem> productItems = ((BO)this.bOBindingSource.DataSource).ProductItems;
InventoryChart.BO.ProductItem mostExpensiveProduct = productItems.Where(p => p.CategoryID == currentCategory.CategoryID).OrderByDescending(p => p.ProductPrice).First() as InventoryChart.BO.ProductItem;
element.LabelElement.Text += string.Format("\nMost expensive product:\n{0} : {1:c}",
mostExpensiveProduct.ProductName,
mostExpensiveProduct.ProductPrice);
}
}
}
