DateTimeChartRangeControlClient Class
The RangeControl‘s client that renders a lightweight chart with a date-time horizontal axis.
Namespace: DevExpress.XtraEditors
Assembly: DevExpress.XtraEditors.v24.2.dll
Declaration
Remarks
To display data as a chart with a date-time horizontal axis in the RangeControl, assign a DateTimeChartRangeControlClient object to the RangeControl.Client property.
To set up a DateTimeChartRangeControlClient, use the following settings, which are accessible from the ChartRangeControlClientBase.DataProvider inherited property.
- ChartRangeControlClientDataProvider.DataSource - Gets or sets the chart range control client provider’s data source.
- ChartRangeControlClientDataProvider.ArgumentDataMember - Gets or sets the name of the data field that contains the arguments of the chart range control client’s points.
- ChartRangeControlClientDataProvider.ValueDataMember - Gets or sets the name of the data field that contains the point values of a chart range control client.
- ChartRangeControlClientDataProvider.SeriesDataMember (optionally) - Gets or sets the name of the data field whose values are used to automatically generate and populate the series of a chart range control client.
Example
This example demonstrates how to set up a range control with the date-time chart client to display a chart with date-time data in the range control’s background.
In order to provide data to a chart date-time range control client, you need to access the ChartRangeControlClientDataProvider object using the ChartRangeControlClientBase.DataProvider property and assign a data source to the ChartRangeControlClientDataProvider.DataSource property. Then specify the required data fields via the ChartRangeControlClientDataProvider.ArgumentDataMember, ChartRangeControlClientDataProvider.ValueDataMember, and ChartRangeControlClientDataProvider.SeriesDataMember (optional) properties.
In the current example, a date-time chart client is bound to a simple data table containing three columns (“Argument”, “Value”, and “Series”).
In addition, this example shows how to customize chart client common settings (e.g., change the date-time range, customize template view and grid options).
using System;
using System.Data;
using System.Drawing;
using System.Windows.Forms;
using DevExpress.XtraEditors;
namespace DateTimeChartRangeClient {
public partial class Form1 : Form {
public Form1() {
InitializeComponent();
// Assign a date-time chart client to the Range control.
rangeControl1.Client = dateTimeChartRangeControlClient1;
// Generate a data table and bind the date-time client to it.
dateTimeChartRangeControlClient1.DataProvider.DataSource = CreateChartData(50, 2);
// Specify data members to bind the client.
dateTimeChartRangeControlClient1.DataProvider.ArgumentDataMember = "Argument";
dateTimeChartRangeControlClient1.DataProvider.ValueDataMember = "Value";
dateTimeChartRangeControlClient1.DataProvider.SeriesDataMember = "Series";
// Specify the chart range control client view.
AreaChartRangeControlClientView areaView = new AreaChartRangeControlClientView();
dateTimeChartRangeControlClient1.DataProvider.TemplateView = areaView;
// Customize the area view appearance.
areaView.AreaOpacity = 90;
areaView.Color = Color.Aqua;
areaView.ShowMarkers = true;
areaView.MarkerSize = 5;
areaView.MarkerColor = Color.Red;
// Format labels of the date-time chart range control client.
dateTimeChartRangeControlClient1.GridOptions.LabelFormat = "D";
// Specify the palette name to get a nice-looking chart.
dateTimeChartRangeControlClient1.PaletteName = "Office";
// Customize grid alignment, grid spacing, snap spacing and snap alignment of the chart range control client.
dateTimeChartRangeControlClient1.GridOptions.GridAlignment = RangeControlDateTimeGridAlignment.Day;
dateTimeChartRangeControlClient1.GridOptions.GridSpacing = 1;
dateTimeChartRangeControlClient1.GridOptions.SnapSpacing = 1;
dateTimeChartRangeControlClient1.GridOptions.SnapAlignment = RangeControlDateTimeGridAlignment.Week;
// Change the date-time range of the chart range control client.
dateTimeChartRangeControlClient1.Range.Min = DateTime.Now;
dateTimeChartRangeControlClient1.Range.Max = DateTime.Now.AddDays(50);
}
private DataTable CreateChartData(int pointCount, int seriesCount) {
// Create an empty table.
DataTable table = new DataTable("Table1");
// Add three columns to the table.
table.Columns.Add("Argument", typeof(DateTime));
table.Columns.Add("Value", typeof(Double));
table.Columns.Add("Series", typeof(string));
// Add data rows to the table.
Random rand = new Random((int)DateTime.Now.Ticks);
DataRow row = null;
double value = 0;
for (int seriesIndex = 0; seriesIndex < seriesCount; seriesIndex++) {
for (int pointIndex = 0; pointIndex < pointCount; pointIndex++) {
value += (rand.NextDouble() - 0.3);
row = table.NewRow();
row["Argument"] = DateTime.Now.Date.AddDays(pointIndex);
row["Value"] = Math.Sin(pointIndex) + value;
row["Series"] = seriesIndex.ToString();
table.Rows.Add(row);
}
}
return table;
}
}
}