selectionType : (single|multiple) Default: "single"
 The type of the row selection.
 If the type is set to multiple the user will be able to select more then one row from the grid.
Examples
  
  $("table").grid({  });
  
  <table id="grid"></table>
 <script>
     $("#grid").grid({
         dataSource: "../Grid/GetPlayers",
         selectionType: "multiple",
         selectionMethod: "checkbox",
         columns: [ { field: "ID" }, { field: "Name" }, { field: "PlaceOfBirth" } ]
     });
 </script>