public virtual System.string DataFormatString {get; set;}
'Declaration
Public Overridable Property DataFormatString As System.String
Property Value
This property is used to provide a custom format for the items in the column.
Remarks
Note: Formatting of values is done on the client-side using globalize.min.js library. Use formatting patterns supported by that library, for more information on the library please check https://github.com/jquery/globalize
Examples:
"n" - displays numeric values in number format.
"d" - displays numeric values in decimal format.
"d" - displays date values in short date format.///
"p" - displays numeric values in percentage format.