SMART datagrid v.1 > Classes > DataColumn
If the value is true and if the value of this column field is an empty value when committing row editing, it will throw Validation exception.
You can specify error level and message set in error by requiredLevel, requiredMessage respectively.
Defaults to false.
$('#setRequired').click(function () {
var column = grid.focusedColumn();
column.setRequired(true);
});