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ChartRangeControlClientGridOptions.GridSpacing Property

Gets or sets a value that specifies the interval between grid lines.

Namespace: DevExpress.XtraEditors

Assembly: DevExpress.XtraEditors.v19.1.dll

Declaration

[XtraSerializableProperty]
public double GridSpacing { get; set; }

Property Value

Type Description
Double

A Double value which specifies the numeric grid step.

Property Paths

You can access this nested property as listed below:

Object Type Path to GridSpacing
ChartRangeControlClientBase
.GridOptions.GridSpacing
DateTimeChartRangeControlClient
.GridOptions.GridSpacing
NumericChartRangeControlClient
.GridOptions.GridSpacing

Remarks

The grid properties (e.g., GridSpacing, DateTimeChartRangeControlClientGridOptions.SnapAlignment and ChartRangeControlClientGridOptions.SnapSpacing) of the chart range control client are calculated automatically because the ChartRangeControlClientGridOptions.Auto property is set to true by default. To cancel automatic grid calculation (the ChartRangeControlClientGridOptions.Auto property is set to false), change the default value of the specific grid property.

The table below shows the GridSpacing property in action for the numeric chart range control client.

GridSpacing = 1 GridSpacing = 2
NumericChartClient_GridSpacing_1 NumericChartClient_GridSpacing
NOTE

The GridSpacing property manages label placement along the X-axis.

Examples

This example shows how to bind a numeric chart range control client to a System.Collections.Generic.List containing NumericItem objects.

In order to provide data to a chart numeric 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.

Each NumericItem object contains Argument, Value and Series properties, to which a numeric chart range control client is bound via its ChartRangeControlClientDataProvider.ArgumentDataMember, ChartRangeControlClientDataProvider.ValueDataMember, and ChartRangeControlClientDataProvider.SeriesDataMember (optional) properties.

In addition, this example shows how to customize chart client common settings (e.g., change the numeric range, customize template view and grid options).

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Windows.Forms;
using DevExpress.XtraEditors;

namespace NumericChartClient {
    public partial class Form1 : Form {

        const int pointCount = 20;
        const int seriesCount = 2;
        Random rand = new Random();
        List<NumericItem> data = new List<NumericItem>();

        public Form1() {
            InitializeComponent();

            // Assign a numeric chart client to the Range control. 
            rangeControl1.Client = numericChartRangeControlClient1;

            // Generate a list of NumericItem objects and bind the numeric chart client to it.
            numericChartRangeControlClient1.DataProvider.DataSource = GenerateNumericData();

            // Specify data members to bind the chart client.
            numericChartRangeControlClient1.DataProvider.ArgumentDataMember = "Argument";
            numericChartRangeControlClient1.DataProvider.ValueDataMember = "Value";
            numericChartRangeControlClient1.DataProvider.SeriesDataMember = "Series";

            // Specify the chart range control client view.
            AreaChartRangeControlClientView areaView = new AreaChartRangeControlClientView();
            numericChartRangeControlClient1.DataProvider.TemplateView = areaView;

            // Customize the area view appearance. 
            areaView.AreaOpacity = 90;
            areaView.Color = Color.Gray;
            areaView.ShowMarkers = true;
            areaView.MarkerSize = 5;
            areaView.MarkerColor = Color.Red;

            // Specify the palette name to get a nice-looking chart.
            numericChartRangeControlClient1.PaletteName = "NatureColors";

            // Change the default range of the numeric chart range control client.          
            numericChartRangeControlClient1.Range.Min = 4;
            numericChartRangeControlClient1.Range.Max = 12;

            // Customize the grid options of the numeric chart range control client.          
            numericChartRangeControlClient1.GridOptions.GridSpacing = 2;
            numericChartRangeControlClient1.GridOptions.SnapSpacing = 1;
        }

        List<NumericItem> GenerateNumericData() {

            for (int seriesIndex = 0; seriesIndex < seriesCount; seriesIndex++) {
                for (int i = 0; i < pointCount; i++) {
                    data.Add(new NumericItem() {
                        Argument = i,
                        Value = rand.Next(0, 30) + i,
                        Series = seriesIndex
                    });
                }
            }
            return data;
        }
    }

    public class NumericItem {
        public double Argument { get; set; }
        public double Value { get; set; }
        public double Series { get; set; }
    }
}
See Also