wdtGrid.setOption('grid1', {selectMode : 'cell'});  //cell unit select
        wdtGrid.setOption('grid1', {selectMode : 'row'});   //row unit select
        wdtGrid.setOption('grid1', {selectOne : false});    //multi cell is possible
        wdtGrid.setOption('grid1', {selectOne : true});    //only one cell is possible
    

        function btn1() {
            wdtGrid.setOption('grid1', {selectMode : 'cell'});
        }
        function btn2() {
            wdtGrid.setOption('grid1', {selectMode : 'row'});
        }
        function btn3() {
            wdtGrid.setOption('grid1', {selectOne : false});
        }
        function btn4() {
            wdtGrid.setOption('grid1', {selectOne : true});
        }