public NumericStartPoint GridAlignmentStartPoint { get; set; }

Public Property GridAlignmentStartPoint As NumericStartPoint

using System;
using System.Collections.ObjectModel;
using System.Windows;

namespace WpfApp {

    public partial class MainWindow : Window {

        public ObservableCollection<Point> Data { get; }

        public MainWindow() {
            InitializeComponent();
            Data = GenerateData(20);
            DataContext = this;
        }

        private void Button_Click(object sender, RoutedEventArgs e) {
            CNSO.GridAlignmentStartPoint = DevExpress.Xpf.Charts.NumericStartPoint.MinRangeValue;
        }

        private void Button_Click_1(object sender, RoutedEventArgs e) {
             CNSO.GridAlignmentStartPoint = DevExpress.Xpf.Charts.NumericStartPoint.Zero;
        }
        ObservableCollection<Point> GenerateData(int pointCount) {
            ObservableCollection<Point> res = new ObservableCollection<Point>();
            Random generator = new Random(0);
            for(int i = 0; i < pointCount; ++i)
                res.Add(new Point((i), generator.Next(10)));
            return res;
        }
    }
}

Imports System
Imports System.Collections.ObjectModel
Imports System.Windows

Namespace WpfApp

    Partial Public Class MainWindow
        Inherits Window

        Public ReadOnly Property Data() As ObservableCollection(Of Point)

        Public Sub New()
            InitializeComponent()
            Data = GenerateData(20)
            DataContext = Me
        End Sub

        Private Sub Button_Click(ByVal sender As Object, ByVal e As RoutedEventArgs)
            CNSO.GridAlignmentStartPoint = DevExpress.Xpf.Charts.NumericStartPoint.MinRangeValue
        End Sub

        Private Sub Button_Click_1(ByVal sender As Object, ByVal e As RoutedEventArgs)
             CNSO.GridAlignmentStartPoint = DevExpress.Xpf.Charts.NumericStartPoint.Zero
        End Sub
        Private Function GenerateData(ByVal pointCount As Integer) As ObservableCollection(Of Point)
            Dim res As New ObservableCollection(Of Point)()
            Dim generator As New Random(0)
            For i As Integer = 0 To pointCount - 1
                res.Add(New Point((i), generator.Next(10)))
            Next i
            Return res
        End Function
    End Class
End Namespace

<Window
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WpfApp10"
        xmlns:dxc="http://schemas.devexpress.com/winfx/2008/xaml/charts" x:Class="WpfApp.MainWindow"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Grid>
        <dxc:ChartControl>
            <dxc:XYDiagram2D>
                <dxc:XYDiagram2D.AxisX>
                    <dxc:AxisX2D x:Name="AX">
                        <dxc:AxisX2D.WholeRange>
                            <dxc:Range MinValue="1" StartSideMargin="0" EndSideMargin="0"/>
                        </dxc:AxisX2D.WholeRange>
                        <dxc:AxisX2D.NumericScaleOptions>
                            <dxc:ContinuousNumericScaleOptions x:Name="CNSO" AutoGrid="False" GridSpacing="1" GridAlignment="1.31"/>
                        </dxc:AxisX2D.NumericScaleOptions>
                    </dxc:AxisX2D>
                </dxc:XYDiagram2D.AxisX>
                <dxc:BarSideBySideSeries2D DataSource="{Binding Data}" ArgumentDataMember="X" ValueDataMember="Y"/>
            </dxc:XYDiagram2D>
        </dxc:ChartControl>
        <Button Content="MinRangeValue" HorizontalAlignment="Left" Margin="80,0,0,0" VerticalAlignment="Top" Width="107" Click="Button_Click"/>
        <Button Content="Zero" HorizontalAlignment="Left" Margin="231,0,0,0" VerticalAlignment="Top" Width="75" Click="Button_Click_1" RenderTransformOrigin="-2.68,-4.142"/>
    </Grid>
</Window>