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ItemToolTipOpening is never been called

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Chart
This is a migrated thread and some comments may be shown as answers.
Markus Demmler asked on 05 Apr 2010, 06:19 PM
Hello,
I am trying to setup a data drill down simiar to the provided example. But I am facing the problem that the ItemToolTipOpening event is not fired when I place the mouse on a chart point.
Here is the code that I am using:
    
            using System; 
        
            using System.Collections.Generic; 
        
            using System.Linq; 
        
            using System.Text; 
        
            using System.Windows; 
        
            using System.Windows.Controls; 
        
            using System.Windows.Data; 
        
            using System.Windows.Documents; 
        
            using System.Windows.Input; 
        
            using System.Windows.Media; 
        
            using System.Windows.Media.Imaging; 
        
            using System.Windows.Shapes; 
        
            using Telerik.Windows.Controls.Charting; 
        
            using AppointmentScheduler; 
        
            using Telerik.Windows.Data; 
        
            using System.Globalization; 
        
            using Telerik.Windows.Controls; 
        
            namespace AppointmentSchedulerUI 
        
            { 
        
                /// <summary> 
        
                /// Interaction logic for ChartWorkingHours.xaml 
        
                /// </summary> 
        
                public partial class ChartWorkingHours : Window 
        
                { 
        
                    private AppointmentScheduler.AppointmentScheduler m_AppointmentScheduler; 
        
                    private Dictionary<string, Employee> m_Employees; 
        
                    public ChartWorkingHours(Dictionary<string, Employee> employees, AppointmentScheduler.AppointmentScheduler appointmentScheduler) 
        
                    { 
        
                        m_AppointmentScheduler = appointmentScheduler; 
        
                        m_Employees = employees; 
        
                        InitializeComponent(); 
        
                        CountriesBox.ItemsSource = employees.Values; 
        
                        m_CB_Year.ItemsSource = new int[]{2009, 2010, 2011, 2012};             
        
                        List<string> monthNames = new List<string>(); 
        
                        monthNames.Add("Komplettes Jahr"); 
        
                        for (int i=1; i<=12; i++) 
        
                            monthNames.Add(CultureInfo.CurrentCulture.DateTimeFormat.GetMonthName(i)); 
        
                        m_CB_Month.ItemsSource = monthNames;             
        
                        m_RadChart.DefaultView.ChartLegend.Header = ""; 
        
                        m_RadChart.DefaultView.ChartLegendPosition = Dock.Bottom; 
        
                        SeriesMapping seriesMapping1 = new SeriesMapping(); 
        
                        seriesMapping1.LegendLabel = "Abgerechnete Arbeitsstunden"; 
        
                        seriesMapping1.SeriesDefinition = new BarSeriesDefinition(); 
        
                        ItemMapping itemMapping1 = new ItemMapping(); 
        
                        itemMapping1.DataPointMember = DataPointMember.YValue; 
        
                        itemMapping1.FieldName = "WorkedHours"; 
        
                        ItemMapping itemMapping2 = new ItemMapping(); 
        
                        itemMapping2.DataPointMember = DataPointMember.XCategory; 
        
                        itemMapping2.FieldName = "ShortName"; 
        
                        seriesMapping1.ItemMappings.Add(itemMapping1); 
        
                        seriesMapping1.ItemMappings.Add(itemMapping2); 
        
                        m_RadChart.SeriesMappings.Add(seriesMapping1);                   
        
                        SeriesMapping seriesMapping2= new SeriesMapping(); 
        
                        seriesMapping2.LegendLabel = "Bezahlte Arbeitsstunden"; 
        
                        seriesMapping2.SeriesDefinition = new BarSeriesDefinition(); 
        
                        ItemMapping itemMapping3 = new ItemMapping(); 
        
                        itemMapping3.DataPointMember = DataPointMember.YValue; 
        
                        itemMapping3.FieldName = "PaidHours"; 
        
                        ItemMapping itemMapping4 = new ItemMapping(); 
        
                        itemMapping4.DataPointMember = DataPointMember.XCategory; 
        
                        itemMapping4.FieldName = "ShortName"; 
        
                        seriesMapping2.ItemMappings.Add(itemMapping3); 
        
                        seriesMapping2.ItemMappings.Add(itemMapping4); 
        
                        m_RadChart.SeriesMappings.Add(seriesMapping2); 
        
                        m_CB_Year.SelectedItem = DateTime.Now.Year; 
        
                        m_CB_Month.SelectedIndex = 0; 
        
                        m_CB_Year.SelectionChanged +=new SelectionChangedEventHandler(TimeSpanModified); 
        
                        m_CB_Month.SelectionChanged += new SelectionChangedEventHandler(TimeSpanModified); 
        
                        m_RadChart.DefaultView.ChartArea.ItemToolTipOpening += this.ChartItemToolTipOpening; 
        
                        UpdateData(); 
        
                    } 
        
                    private void ChartItemToolTipOpening(ItemToolTip2D tooltip, ItemToolTipEventArgs args) 
        
                    { 
        
                        RadChart chart = new RadChart(); 
        
                        chart.Height = 200; 
        
                        chart.Width = 300; 
        
                        chart.DefaultView.ChartLegend.Visibility = System.Windows.Visibility.Collapsed; 
        
                        chart.DefaultView.ChartArea.AxisX.LayoutMode = AxisLayoutMode.Inside; 
        
                        string axisItemLabel = m_RadChart.DefaultView.ChartArea.AxisX.TickPoints[args.ItemIndex].Label; 
        
                        chart.DefaultView.ChartTitle.Content = string.Format("Quarterly Preview: {0}", axisItemLabel); 
        
                        chart.DefaultView.ChartArea.AxisY.DefaultLabelFormat = "C"; 
        
                        DataSeries series = new DataSeries(); 
        
                        series.Definition = new LineSeriesDefinition(); 
        
                        series.Definition.ShowItemLabels = false; 
        
                        //SeriesExtensions.FillWithSampleData(series, 4, (int)args.DataPoint.YValue); 
        
                        string[] quarters = new string[] { "Q1", "Q2", "Q3", "Q4" }; 
        
                        for (int i = 0; i < chart.DefaultView.ChartArea.AxisX.TickPoints.Count; i++) 
        
                            series[i].XCategory = quarters[i]; 
        
                        //for (int i = 0; i < series.Count; i++) 
        
                        //    quarterlyRevenues[i] = series[i].YValue; 
        
                        chart.DefaultView.ChartArea.DataSeries.Add(series); 
        
                        tooltip.Content = chart; 
        
                    } 
        
                    private void UpdateData() 
        
                    { 
        
                        int selectedYear = (int)m_CB_Year.SelectedItem; 
        
                        string selectedMonthString = (string)m_CB_Month.SelectedItem; 
        
                        bool wholeYear = false; 
        
                        int selectedMonth = 0; 
        
                        if (selectedMonthString == "Komplettes Jahr") 
        
                            wholeYear = true; 
        
                        else 
        
                            selectedMonth = DateTime.ParseExact(selectedMonthString, "MMMM", CultureInfo.CurrentCulture).Month; 
        
                        DateTime startTime; 
        
                        DateTime endTime; 
        
                        if (wholeYear) 
        
                        { 
        
                            startTime = new DateTime(selectedYear, 1, 1); 
        
                            endTime = new DateTime(selectedYear + 1, 1, 1); 
        
                        } 
        
                        else 
        
                        { 
        
                            startTime = new DateTime(selectedYear, selectedMonth, 1); 
        
                            endTime = new DateTime(selectedYear, selectedMonth, 1).AddMonths(1); 
        
                        } 
        
                        List<ChartData> chartData = new List<ChartData>(); 
        
                        foreach (Employee emp in m_Employees.Values) 
        
                        { 
        
                            double workedHours = m_AppointmentScheduler.GetWorkedHours(startTime, endTime, emp); 
        
                            double paidHours = m_AppointmentScheduler.GetPaidHours(startTime, endTime, emp); 
        
                            chartData.Add(new ChartData(emp.FirstName, emp.LastName, workedHours, paidHours)); 
        
                        } 
        
                        m_RadChart.ItemsSource = chartData; 
        
                    } 
        
                    private void CheckBox_Checked(object sender, RoutedEventArgs e) 
        
                    { 
        
                        CheckBox sourceCheckbox = e.OriginalSource as CheckBox; 
        
                        Queue<ChartFilterDescriptor> filtersToRemove = new Queue<ChartFilterDescriptor>(); 
        
                        foreach (ChartFilterDescriptor descriptor in m_RadChart.FilterDescriptors) 
        
                        { 
        
                            if (descriptor.Value.Equals(sourceCheckbox.Content)) 
        
                                filtersToRemove.Enqueue(descriptor); 
        
                        } 
        
                        foreach (ChartFilterDescriptor descriptor in filtersToRemove) 
        
                            m_RadChart.FilterDescriptors.Remove(descriptor); 
        
                    } 
        
                    private void CheckBox_Unchecked(object sender, RoutedEventArgs e) 
        
                    { 
        
                        CheckBox sourceCheckbox = e.OriginalSource as CheckBox; 
        
                        m_RadChart.FilterDescriptors.Add(new ChartFilterDescriptor("FullName", typeof(string), FilterOperator.IsNotEqualTo, sourceCheckbox.Content)); 
        
                    } 
        
                    private void TimeSpanModified(object sender, SelectionChangedEventArgs e) 
        
                    { 
        
                        UpdateData(); 
        
                    } 
        
                } 
        
            }
I am custom classes which are connected via SeriesMapping.

Best regards,
Markus Demmler
4 Answers, 1 is accepted

answered on 07 Apr 2010, 04:04 PM
Hello Markus Demmler,

Here is an excerpt from the code you provided which I modified in order to enable tooltips in your scenario. You should apply the changes to all the SeriesMapping objects you have:
SeriesMapping seriesMapping1 = new SeriesMapping();
seriesMapping1.LegendLabel = "Abgerechnete Arbeitsstunden";
seriesMapping1.SeriesDefinition = new BarSeriesDefinition(){ ShowItemToolTips = true};
Greetings,
Velin
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