DefaultLabelValue

Updated on Jul 8, 2026

RadChart has been deprecated since Q3 2014 and is marked as obsolete as of the 2026 Q2 SP1 (v2026.2.708) release. This is the last release that includes the RadChart component — its source code will be removed from the assembly in the next release. We strongly recommend using RadHtmlChart, Telerik's modern client-side charting component. To transition from RadChart to RadHtmlChart, refer to the following migration articles:

• Migrating Series
• Migrating Axes
• Migrating Date Axes
• Migrating Databinding
• Features parity

Explore the RadHtmlChart documentation and online demos to determine how it fits your development needs.

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.