SMART datagrid v.1 > Classes > CellStyleManager
It decreases internal update lock count which has been increased by beginUpdate.
When the lock count becomes 0, if explicitly specify parameter refreshViews as true or do not specify separately, it will update grids which use this style manager. You should call beginUpdate, endUpdate in pairs.
var sm = grid.styleManager();
sm.beginUpdate();
try {
for (var r = 0; r < 10; r++) {
sm.setStyleAt(r, 1, 'style01');
}
} finally {
sm.endUpdate();
}