Axis TextFormatting

All Axis obey standard .NET Formatting strings via the AxisCore.TextFormatting property.

e.g. some examples include:

<DateTimeAxis TextFormatting="dd-MMM-yyyy" SubDayTextFormatting="HH:mm:ss"/>
<TimeSpanAxis TextFormatting="HH:mm:ss"/> 
<NumericAxis TextFormatting="0.000###"/> 
<NumericAxis TextFormatting="n2"/>
<NumericAxis TextFormatting="n4"/> 
<NumericAxis TextFormatting="E"/>
<NumericAxis TextFormatting="$0.00"/>

For a full list of standard .NET Formatting strings take a look at the pages

• https://msdn.microsoft.com/en-us/library/dwhawy9k%28v=vs.110%29.aspx?f=255&MSPPError=-2147217396
• https://msdn.microsoft.com/en-us/library/8kb3ddd4(v=vs.110).aspx

Axis CursorTextFormatting

The AxisCore.CursorTextFormatting property defines how text is formatted for cursor labels. To change the CursorTextFormatting, use a standard .NET Formatting string as follows:

<DateTimeAxis CursorTextFormatting="dd-MMM-yyyy" />
<TimeSpanAxis CursorTextFormatting="HH:mm:ss"/> 
<NumericAxis CursorTextFormatting="0.000###"/>
<NumericAxis CursorTextFormatting="n2"/>
<NumericAxis CursorTextFormatting="n4"/> 
<NumericAxis CursorTextFormatting="E"/> 
<NumericAxis CursorTextFormatting="$0.00"/>

Dynamically Changing TextFormatting

The DateTimeAxis and CategoryDateTimeAxis types have TextFormatting and SubDayTextFormatting properties. These are designed to show an alternative TextFormatting when the range of the axis is less than one day.

If you require finer grained control over the Axis TextFormatting, say, as you zoom, you can subscribe to Axis.VisibleRangeChanged and dynamically change the TextFormatting.

e.g.

var axis = new NumericAxis();
axis.VisibleRangeChanged += (s, e) =>
{
    if (!e.IsAnimating)
    {
        if ((newRange.Max - newRange.Min) < 0.001) ((AxisBase)s).TextFormatting = "E";
        else if ((newRange.Max - newRange.Min) < 1.0) ((AxisBase)s).TextFormatting = "0.000";
        else ((AxisBase)s).TextFormatting = "0";
    }
};