SeriesBase.ValueDataMembers Property
StackedBarSeriesView只允许传递一个ValueDataMembers
Gets a collection of the names of data fields that contain series point values.
Namespace:DevExpress.XtraCharts
Assembly:DevExpress.XtraCharts.v19.1.dll
Syntax
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public ValueDataMemberCollection ValueDataMembers { get; }
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Property value
Type: ValueDataMemberCollection
The collection of the names of data fields that contain series point values.
Remarks
Use the 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
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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);
}
}
}
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See Also
SeriesBase Class
SeriesBase Members
DevExpress.XtraCharts Namespace
ArgumentDataMember
ChartControl.DataSource
Series.DataSource
