Range.Auto Property

Gets or sets a value that specifies whether the minimum and maximum axis values are calculated automatically based upon the series being drawn.

Namespace: DevExpress.XtraCharts

Assembly: DevExpress.XtraCharts.v23.2.dll

NuGet Package: DevExpress.Charts

Declaration

C#

public bool Auto { get; set; }

VB.NET

Public Property Auto As Boolean

Property Value

Type	Description
Boolean	true, if the minimum and maximum axis values are calculated automatically; otherwise, false.

Remarks

Use the Auto property to control whether the minimum and maximum values of an axis should be calculated automatically.

If the Auto property is set to true, an axis’s minimum and maximum values are calculated automatically based upon the corresponding data (specifically, arguments or data values which depend upon the axis’s type - X or Y respectively) of all the series being drawn on the chart control’s diagram. In this case, the values of the Range.MinValue and Range.MaxValue properties are automatically set to appropriate values.

When the Auto property is set to false, the minimum and maximum axis values are defined via the Range.MinValue and Range.MaxValue properties.

For more information, refer to Visual Ranges and Whole Ranges .

Example

This example demonstrates how to use the AxisBase.VisualRange property to define the visible range of an axis, and the AxisBase.WholeRange property to define its whole range.

For more information on axis range, refer to Visual Ranges and Whole Ranges .

Form1.cs

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

namespace WindowsFormsApplication1 {
    public partial class Form1 : Form {
        public Form1() {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e) {

            // Create a chart control.
            ChartControl chartControl1 = new ChartControl();

            // Add the chart to the form.
            chartControl1.Dock = DockStyle.Fill;
            this.Controls.Add(chartControl1);

            // Create a bar series and add points to it.
            Series series1 = new Series("Series 1", ViewType.Bar);
            series1.Points.Add(new SeriesPoint("A", new double[] { 26.25 }));
            series1.Points.Add(new SeriesPoint("B", new double[] { 1.52 }));
            series1.Points.Add(new SeriesPoint("C", new double[] { 22.21 }));
            series1.Points.Add(new SeriesPoint("D", new double[] { 15.35 }));
            series1.Points.Add(new SeriesPoint("E", new double[] { 4.15 }));

            // Add the series to the chart.
            chartControl1.Series.Add(series1);

            // Cast the chart's diagram to the XYDiagram type, to access its axes.
            XYDiagram diagram = (XYDiagram)chartControl1.Diagram;

            // Enable the diagram's scrolling.
            diagram.EnableAxisXScrolling = true;
            diagram.EnableAxisYScrolling = true;

            // Define the whole range for the X-axis. 
            diagram.AxisX.WholeRange.Auto = false;
            diagram.AxisX.WholeRange.SetMinMaxValues("A", "D");

            // Disable the side margins 
            // (this has an effect only for certain view types).
            diagram.AxisX.VisualRange.AutoSideMargins = false;

            // Limit the visible range for the X-axis.
            diagram.AxisX.VisualRange.Auto = false;
            diagram.AxisX.VisualRange.SetMinMaxValues("B", "C");

            // Define the whole range for the Y-axis. 
            diagram.AxisY.WholeRange.Auto = false;
            diagram.AxisY.WholeRange.SetMinMaxValues(1, 26);
        }
    }
}

Form1.vb

Imports DevExpress.XtraCharts
Imports System
Imports System.Windows.Forms

Namespace WindowsFormsApplication1
    Partial Public Class Form1
        Inherits Form

        Public Sub New()
            InitializeComponent()
        End Sub

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

            ' Create a chart control.
            Dim chartControl1 As New ChartControl()

            ' Add the chart to the form.
            chartControl1.Dock = DockStyle.Fill
            Me.Controls.Add(chartControl1)

            ' Create a bar series and add points to it.
            Dim series1 As New Series("Series 1", ViewType.Bar)
            series1.Points.Add(New SeriesPoint("A", New Double() { 26.25 }))
            series1.Points.Add(New SeriesPoint("B", New Double() { 1.52 }))
            series1.Points.Add(New SeriesPoint("C", New Double() { 22.21 }))
            series1.Points.Add(New SeriesPoint("D", New Double() { 15.35 }))
            series1.Points.Add(New SeriesPoint("E", New Double() { 4.15 }))

            ' Add the series to the chart.
            chartControl1.Series.Add(series1)

            ' Cast the chart's diagram to the XYDiagram type, to access its axes.
            Dim diagram As XYDiagram = CType(chartControl1.Diagram, XYDiagram)

            ' Enable the diagram's scrolling.
            diagram.EnableAxisXScrolling = True
            diagram.EnableAxisYScrolling = True

            ' Define the whole range for the X-axis. 
            diagram.AxisX.WholeRange.Auto = False
            diagram.AxisX.WholeRange.SetMinMaxValues("A", "D")

            ' Disable the side margins 
            ' (this has an effect only for certain view types).
            diagram.AxisX.VisualRange.AutoSideMargins = False

            ' Limit the visible range for the X-axis.
            diagram.AxisX.VisualRange.Auto = False
            diagram.AxisX.VisualRange.SetMinMaxValues("B", "C")

            ' Define the whole range for the Y-axis. 
            diagram.AxisY.WholeRange.Auto = False
            diagram.AxisY.WholeRange.SetMinMaxValues(1, 26)
        End Sub
    End Class
End Namespace