Version

selectedColumns Property

A collection of columns that are currently selected in the WebDataGrid. To select a column, use the Add method off of the Collection. To unselect a column, use the Remove method off of the Collection.
Syntax
ASP.NET Ajax Javascript (Specification) 
function get_selectedColumns() : GridSelectedColumnCollection
ASP.NET Ajax Javascript (Usage) 
var resultVar = instanceOfSelection.get_selectedColumns();
See Also