public event DashboardItemMouseActionEventHandler DashboardItemClick

Public Event DashboardItemClick As DashboardItemMouseActionEventHandler

using System;
using System.Data;
using System.Drawing;
using System.Windows.Forms;
using DevExpress.XtraEditors;
using DevExpress.DashboardWin;
using DevExpress.DashboardCommon;
using DevExpress.XtraCharts;
using DevExpress.DashboardCommon.ViewerData;

namespace Dashboard_ClientDataCards_Win {
    public partial class Form1 : XtraForm {
        public Form1() {
            InitializeComponent();
            dashboardViewer1.DashboardItemClick += dashboardViewer1_DashboardItemClick;
        }

        // Handles the DashboardViewer.DashboardItemClick event.
        private void dashboardViewer1_DashboardItemClick(object sender, 
            DashboardItemMouseActionEventArgs e) {
            if (e.DashboardItemName == "cardDashboardItem1" & e.GetAxisPoint() != null) {
                // Obtains client data related to the clicked card.
                MultiDimensionalData clickedItemData = e.Data.GetSlice(e.GetAxisPoint());
                DeltaDescriptor delta = e.GetDeltas()[0];

                // Creates a data table that will be used to hold client data.
                DataTable dataSource = new DataTable();
                dataSource.Columns.Add("Argument", typeof(DateTime));
                dataSource.Columns.Add("Actual", typeof(double));
                dataSource.Columns.Add("Target", typeof(double));

                // Saves values of axis points placed on the "sparkline" axis and corresponding
                // actual/target values to the data table.
                foreach (AxisPoint point in 
                    clickedItemData.GetAxisPoints(DashboardDataAxisNames.SparklineAxis)) {
                        DataRow row = dataSource.NewRow();                        
                        DeltaValue deltaValue = clickedItemData.GetSlice(point).GetDeltaValue(delta);
                        if (deltaValue.ActualValue.Value != null && 
                            deltaValue.TargetValue.Value != null) {
                            row["Argument"] = point.Value;
                            row["Actual"] = deltaValue.ActualValue.Value;
                            row["Target"] = deltaValue.TargetValue.Value;
                        }
                        else {
                            row["Argument"] = DBNull.Value;
                            row["Actual"] = DBNull.Value;
                            row["Target"] = DBNull.Value;
                        }
                        dataSource.Rows.Add(row);
                }
                DisplayDetailedChart(GetFormTitle(clickedItemData), dataSource);
            }   
        }

        // Creates a new form that is invoked on the card click and 
        // shows the chart displaying client data.
        void DisplayDetailedChart(string title, DataTable dataSource) {
            XtraForm form = new XtraForm();
            form.Text = title;
            form.Bounds = new Rectangle(100, 100, 700, 350);

            ChartControl chart = new ChartControl();
            chart.Parent = form; chart.Dock = DockStyle.Fill;

            Series series1 = new Series("Actual", ViewType.SplineArea);
            Series series2 = new Series("Target", ViewType.Spline);
            chart.Series.AddRange(new Series[] { series1, series2 });

            foreach (Series series in chart.Series) {
                series.DataSource = dataSource; series.ArgumentDataMember = "Argument";
                series.ValueScaleType = ScaleType.Numerical;                
            }
            series1.ValueDataMembers.AddRange(new string[] { "Actual" });
            series2.ValueDataMembers.AddRange(new string[] { "Target" });
            ((XYDiagram)chart.Diagram).AxisY.Label.TextPattern = "{V:$0}";

            form.ShowDialog();
            form.Dispose();
        }

        // Obtains a value of the axis point placed on the "default" axis
        // to display this value in the invoked form title.
        string GetFormTitle(MultiDimensionalData clickedItemData) {
            AxisPoint clickedPoint = 
                clickedItemData.GetAxisPoints(DashboardDataAxisNames.DefaultAxis)[0];
            string clickedPointValue = clickedPoint.Value.ToString();
            return clickedPointValue;
        }
    }
}

Imports System
Imports System.Data
Imports System.Drawing
Imports System.Windows.Forms
Imports DevExpress.XtraEditors
Imports DevExpress.DashboardWin
Imports DevExpress.DashboardCommon
Imports DevExpress.XtraCharts
Imports DevExpress.DashboardCommon.ViewerData

Namespace Dashboard_ClientDataCards_Win
    Partial Public Class Form1
        Inherits XtraForm

        Public Sub New()
            InitializeComponent()
            AddHandler dashboardViewer1.DashboardItemClick, AddressOf dashboardViewer1_DashboardItemClick
        End Sub

        ' Handles the DashboardViewer.DashboardItemClick event.
        Private Sub dashboardViewer1_DashboardItemClick(ByVal sender As Object, ByVal e As DashboardItemMouseActionEventArgs)
            If e.DashboardItemName = "cardDashboardItem1" And e.GetAxisPoint() IsNot Nothing Then
                ' Obtains client data related to the clicked card.
                Dim clickedItemData As MultiDimensionalData = e.Data.GetSlice(e.GetAxisPoint())
                Dim delta As DeltaDescriptor = e.GetDeltas()(0)

                ' Creates a data table that will be used to hold client data.
                Dim dataSource As New DataTable()
                dataSource.Columns.Add("Argument", GetType(Date))
                dataSource.Columns.Add("Actual", GetType(Double))
                dataSource.Columns.Add("Target", GetType(Double))

                ' Saves values of axis points placed on the "sparkline" axis and corresponding
                ' actual/target values to the data table.
                For Each point As AxisPoint In clickedItemData.GetAxisPoints(DashboardDataAxisNames.SparklineAxis)
                        Dim row As DataRow = dataSource.NewRow()
                        Dim deltaValue As DeltaValue = clickedItemData.GetSlice(point).GetDeltaValue(delta)
                        If deltaValue.ActualValue.Value IsNot Nothing AndAlso deltaValue.TargetValue.Value IsNot Nothing Then
                            row("Argument") = point.Value
                            row("Actual") = deltaValue.ActualValue.Value
                            row("Target") = deltaValue.TargetValue.Value
                        Else
                            row("Argument") = DBNull.Value
                            row("Actual") = DBNull.Value
                            row("Target") = DBNull.Value
                        End If
                        dataSource.Rows.Add(row)
                Next point
                DisplayDetailedChart(GetFormTitle(clickedItemData), dataSource)
            End If
        End Sub

        ' Creates a new form that is invoked on the card click and 
        ' shows the chart displaying client data.
        Private Sub DisplayDetailedChart(ByVal title As String, ByVal dataSource As DataTable)
            Dim form As New XtraForm()
            form.Text = title
            form.Bounds = New Rectangle(100, 100, 700, 350)

            Dim chart As New ChartControl()
            chart.Parent = form
            chart.Dock = DockStyle.Fill

            Dim series1 As New Series("Actual", ViewType.SplineArea)
            Dim series2 As New Series("Target", ViewType.Spline)
            chart.Series.AddRange(New Series() { series1, series2 })

            For Each series As Series In chart.Series
                series.DataSource = dataSource
                series.ArgumentDataMember = "Argument"
                series.ValueScaleType = ScaleType.Numerical
            Next series
            series1.ValueDataMembers.AddRange(New String() { "Actual" })
            series2.ValueDataMembers.AddRange(New String() { "Target" })
            CType(chart.Diagram, XYDiagram).AxisY.Label.TextPattern = "{V:$0}"

            form.ShowDialog()
            form.Dispose()
        End Sub

        ' Obtains a value of the axis point placed on the "default" axis
        ' to display this value in the invoked form title.
        Private Function GetFormTitle(ByVal clickedItemData As MultiDimensionalData) As String
            Dim clickedPoint As AxisPoint = clickedItemData.GetAxisPoints(DashboardDataAxisNames.DefaultAxis)(0)
            Dim clickedPointValue As String = clickedPoint.Value.ToString()
            Return clickedPointValue
        End Function
    End Class
End Namespace

InitializeComponent();
    dashboardViewer1.DashboardItemClick += dashboardViewer1_DashboardItemClick;
}

dashboardViewer1.DataLoading += dashboardViewer1_DataLoading;
dashboardViewer1.DashboardItemClick += dashboardViewer1_DashboardItemClick;
dashboardViewer1.DashboardItemVisualInteractivity += dashboardViewer1_DashboardItemVisualInteractivity;

dashboardViewer1.DashboardItemControlUpdated += DashboardViewer1_DashboardItemControlUpdated;
dashboardViewer1.DashboardItemClick += DashboardViewer1_DashboardItemClick;

InitializeComponent()
    AddHandler dashboardViewer1.DashboardItemClick, AddressOf dashboardViewer1_DashboardItemClick
End Sub

AddHandler dashboardViewer1.DataLoading, AddressOf dashboardViewer1_DataLoading
AddHandler dashboardViewer1.DashboardItemClick, AddressOf dashboardViewer1_DashboardItemClick
AddHandler dashboardViewer1.DashboardItemVisualInteractivity, AddressOf dashboardViewer1_DashboardItemVisualInteractivity

AddHandler dashboardViewer1.DashboardItemControlUpdated, AddressOf DashboardViewer1_DashboardItemControlUpdated
AddHandler dashboardViewer1.DashboardItemClick, AddressOf DashboardViewer1_DashboardItemClick
Dim helper As TabPageLoadHelper = New TabPageLoadHelper("CalculationProductSalesSource.xml")