Measure Class

A measure which is a DataItem whose values are summarized before they are used in the dashboard.

Namespace: DevExpress.DashboardCommon
Assembly: DevExpress.Dashboard.v18.1.Core.dll
Syntax
public class Measure : DataItem, IDataItemRepositoryProvider, ISupportInitialize, IEditNameProvider, INumericFormatContext, IMeasureCalculationContext

The Measure is used to summarize data against grouped dimension values. These values can be of any type - numeric, date-time or string. In any case, the dashboard will calculate an appropriate summary function against measure values. You can also customize the data format settings that affect how summary values are displayed. In contrast to measures, a Dimension is used to provide discrete categorical information.

To learn more about dimensions and measures, see Measures and Dimensions.

Examples

The following example demonstrates how to bind a Chart dashboard item to data in code.

´╗┐Imports System
Imports System.Windows.Forms
Imports DevExpress.DashboardCommon
Imports DevExpress.DataAccess

Namespace Dashboard_CreateChart
    Partial Public Class Form1
        Inherits Form

        Public Sub New()
            InitializeComponent()
        End Sub
        Private Function CreateChart(ByVal dataSource As DashboardObjectDataSource) As ChartDashboardItem

            ' Creates a chart dashboard item and specifies its data source.
            Dim chart As New ChartDashboardItem()
            chart.DataSource = dataSource

            ' Specifies the dimension used to provide data for arguments on a chart.
            chart.Arguments.Add(New Dimension("Sales Person", DateTimeGroupInterval.Year))

            ' Specifies the dimension that provides data for chart series.
            chart.SeriesDimensions.Add(New Dimension("OrderDate"))

            ' Adds a new chart pane to the chart's Panes collection.
            chart.Panes.Add(New ChartPane())
            ' Creates a new series of the Bar type.
            Dim salesAmountSeries As New SimpleSeries(SimpleSeriesType.Bar)
            ' Specifies the measure that provides data used to calculate
            ' the Y-coordinate of data points.
            salesAmountSeries.Value = New Measure("Extended Price")
            ' Adds created series to the pane's Series collection to display within this pane.
            chart.Panes(0).Series.Add(salesAmountSeries)

            chart.Panes.Add(New ChartPane())
            Dim taxesAmountSeries As New SimpleSeries(SimpleSeriesType.StackedBar)
            taxesAmountSeries.Value = New Measure("Quantity")
            chart.Panes(1).Series.Add(taxesAmountSeries)

            Return chart
        End Function
        Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs) Handles MyBase.Load

            ' Creates a dashboard and sets it as the currently opened dashboard in the dashboard viewer.
            dashboardViewer1.Dashboard = New Dashboard()

            ' Creates a data source and adds it to the dashboard data source collection.
            Dim dataSource As New DashboardObjectDataSource()
            dataSource.DataSource = (New nwindDataSetTableAdapters.SalesPersonTableAdapter()).GetData()
            dashboardViewer1.Dashboard.DataSources.Add(dataSource)

            ' Creates a chart dashboard item with the specified data source 
            ' and adds it to the Items collection to display within the dashboard.
            Dim chart As ChartDashboardItem = CreateChart(dataSource)
            dashboardViewer1.Dashboard.Items.Add(chart)

            ' Reloads data in the data sources.
            dashboardViewer1.ReloadData()
        End Sub
    End Class
End Namespace
Inheritance
Measure
Implements
See Also