DefaultLabelValue specifies a format for label values that will be displayed automatically if
you do not specifically assign text to a chart series item.
- Use "#Y" or "#X" to display numbers from the X or Y axis respectively
- Use "#%" for a percentage of the total sum (of all items).
- Use "#SUM" to display the total of all items.
- "#STSUM" displays the sum of a stacked series.
- "#SERIES" displays the series name.
- "#ITEM" displays the item name.
- You can also use the formatting described in this MSDN article Standard Numeric Format
Strings. Use curly brackets to contain the standard numeric formats. For example, you can display Y values as currency by setting DefaultLabelValue to "#Y{C}". See examples in the figure below.
