TreeMap lets you enable selection of its data items and groups. User can select a node and draw focus on it by simply clicking it. You need to set the SelectionMode property provided by the ChartBase class to either of the following values in the SelectionMode enumeration.

• None (default): Selection is disabled.
  
• Series: Selects a complete series.

• Point: Selects a single data point.

The following code snippet shows how to set the SelectionMode property for a tree map control.

In Code

// Implement Selection Mode
selection-mode="Row"