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How to set the custom labels with auto range for axis?

Platform: WPF |
Control: SfChart |
Published Date: December 23, 2015 |
Last Revised Date: June 27, 2019

Description:

This article describes how to set the custom labels for the axis when we do not specify the range explicitly, i.e., without specifying minimum and maximum values.Solution:

This requirement can be achieved by adding custom labels based on the position of visible labels in ActualRangeChanged event.

XAML

 

 <!--Hooked ActualRangeChangedEvent-->

<chart:SfChart.SecondaryAxis>

<chart:NumericalAxis ActualRangeChanged="NumericalAxis_ActualRangeChanged"/>                         

 </chart:SfChart.SecondaryAxis>

 

C#

private void NumericalAxis_ActualRangeChanged(object sender, Syncfusion.UI.Xaml.Charts.ActualRangeChangedEventArgs e)

{

            var axis = sender as NumericalAxis;

 

            //Gets the collection of visible labels.

            var labels = axis.VisibleLabels;

 

            if (labels != null)

            {

                if (axis.CustomLabels.Count > 0)

                    axis.CustomLabels.Clear();

 

                //To add the custom labels based on the position of visible labels.

                for (int index = 0; index < labels.Count; index++)

                {

                    var axisLabel = new ChartAxisLabel()

                    {

                        Position = labels[index].Position,//To set the position where the custom label should be placed.

 

                        LabelContent = "Item" + index//To set the content from which labels are to be taken.

                    };

 

                    axis.CustomLabels.Add(axisLabel);

                }

            }

        }

 

Output

The following screenshot illustrates the custom labels based on the range in y-axis.

Chart with custom labels based on the range in Y AXIS in WPF

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