SeriesBase.ValueDataMembers Property

Gets a collection of the names of data fields that contain series point values.

Namespace: DevExpress.XtraCharts

Assembly: DevExpress.XtraCharts.v18.2.dll

Declaration

C#

[XtraChartsLocalizableCategory(XtraChartsCategory.Data)]
[XtraSerializableProperty(XtraSerializationVisibility.Hidden)]
public ValueDataMemberCollection ValueDataMembers { get; }

VB.NET

<XtraChartsLocalizableCategory(XtraChartsCategory.Data)>
<XtraSerializableProperty(XtraSerializationVisibility.Hidden)>
Public ReadOnly Property ValueDataMembers As ValueDataMemberCollection

Property Value

Type	Description
ValueDataMemberCollection	The collection of the names of data fields that contain series point values.

Remarks

Use the SeriesBase.ArgumentDataMember and ValueDataMembers properties to bind a series to data. For more information, refer to Specify Series Data Members.

Example

The following example demonstrates how to bind a chart to data at runtime via binding its individual series to a particular datasource. It uses the same approach as the design-time example, but another data table is generated in this code to simplify the example.

Note

Don’t forget to include all necessary assemblies to the References list of your project.

Note

A complete sample project is available at https://github.com/DevExpress-Examples/how-to-bind-individual-chart-series-to-data-e116

Form1.cs

using System;
using System.Data;
using System.Windows.Forms;
using DevExpress.XtraCharts;
// ...

namespace BindIndividualSeriesRuntimeCS {
    public partial class Form1 : Form {
        public Form1() {
            InitializeComponent();
        }

        private DataTable CreateChartData(int rowCount) {
            // Create an empty table.
            DataTable table = new DataTable("Table1");

            // Add two columns to the table.
            table.Columns.Add("Argument", typeof(Int32));
            table.Columns.Add("Value", typeof(Int32));

            // Add data rows to the table.
            Random rnd = new Random();
            DataRow row = null;
            for (int i = 0; i < rowCount; i++) {
                row = table.NewRow();
                row["Argument"] = i;
                row["Value"] = rnd.Next(100);
                table.Rows.Add(row);
            }

            return table;
        }

        private void Form1_Load(object sender, EventArgs e) {
            // Create a chart.
            ChartControl chart = new ChartControl();

            // Create an empty Bar series and add it to the chart.
            Series series = new Series("Series1", ViewType.Bar);
            chart.Series.Add(series);

            // Generate a data table and bind the series to it.
            series.DataSource = CreateChartData(50);

            // Specify data members to bind the series.
            series.ArgumentScaleType = ScaleType.Numerical;
            series.ArgumentDataMember = "Argument";
            series.ValueScaleType = ScaleType.Numerical;
            series.ValueDataMembers.AddRange(new string[] { "Value" });

            // Set some properties to get a nice-looking chart.
            ((SideBySideBarSeriesView)series.View).ColorEach = true;
            ((XYDiagram)chart.Diagram).AxisY.Visibility = DevExpress.Utils.DefaultBoolean.False;
            chart.Legend.Visibility = DevExpress.Utils.DefaultBoolean.False;

            // Dock the chart into its parent and add it to the current form.
            chart.Dock = DockStyle.Fill;
            this.Controls.Add(chart);
        }
    }
}

Form1.vb

Imports System
Imports System.Data
Imports System.Windows.Forms
Imports DevExpress.XtraCharts
' ...

Namespace BindIndividualSeriesRuntimeCS
    Partial Public Class Form1
        Inherits Form

        Public Sub New()
            InitializeComponent()
        End Sub

        Private Function CreateChartData(ByVal rowCount As Integer) As DataTable
            ' Create an empty table.
            Dim table As New DataTable("Table1")

            ' Add two columns to the table.
            table.Columns.Add("Argument", GetType(Int32))
            table.Columns.Add("Value", GetType(Int32))

            ' Add data rows to the table.
            Dim rnd As New Random()
            Dim row As DataRow = Nothing
            For i As Integer = 0 To rowCount - 1
                row = table.NewRow()
                row("Argument") = i
                row("Value") = rnd.Next(100)
                table.Rows.Add(row)
            Next i

            Return table
        End Function

        Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs) Handles MyBase.Load
            ' Create a chart.
            Dim chart As New ChartControl()

            ' Create an empty Bar series and add it to the chart.
            Dim series As New Series("Series1", ViewType.Bar)
            chart.Series.Add(series)

            ' Generate a data table and bind the series to it.
            series.DataSource = CreateChartData(50)

            ' Specify data members to bind the series.
            series.ArgumentScaleType = ScaleType.Numerical
            series.ArgumentDataMember = "Argument"
            series.ValueScaleType = ScaleType.Numerical
            series.ValueDataMembers.AddRange(New String() { "Value" })

            ' Set some properties to get a nice-looking chart.
            CType(series.View, SideBySideBarSeriesView).ColorEach = True
            CType(chart.Diagram, XYDiagram).AxisY.Visibility = DevExpress.Utils.DefaultBoolean.False
            chart.Legend.Visibility = DevExpress.Utils.DefaultBoolean.False

            ' Dock the chart into its parent and add it to the current form.
            chart.Dock = DockStyle.Fill
            Me.Controls.Add(chart)
        End Sub
    End Class
End Namespace

Related GitHub Examples

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the ValueDataMembers property.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

how-to-preserve-the-legend-checkbox-item-state-when-the-series-items-are-created-manually-t470764/CS/dxSample/Default.aspx.cs#L32

series.ArgumentDataMember = "Argument";
series.ValueDataMembers[0] = "Value";
series.DataSource = CreateTestDataTable(randomValueSeek);

VB.NET

how-to-preserve-the-legend-checkbox-item-state-when-the-series-items-are-created-manually-t470764/VB/dxSample/Default.aspx.vb#L34

series.ArgumentDataMember = "Argument"
series.ValueDataMembers(0) = "Value"
series.DataSource = CreateTestDataTable(randomValueSeek)