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should i used onchnge event like this

Hello,

should i used on chnage event like this please tell me i want to check the my column index value 8 to database value and with the help of "07_basic_validation_with_message.html" example we will allow only validation for not empty but i dnt want that validation i m apply my own validation is it possible using on chnage event please reply me as soon as possible.


mygrid.attachEvent("onChange",function(row_id,column_index){

if(column_index==8)
{
alert(value6);
var value6 = this.cells(row_id,8).getValue();
validate_user(value6);
}
})

regards
Suraj

Better to use setVerificator dataProcessor's method:
myDataProcessor.setVerificator(1, not_empty);
.. 
function not_empty(value) {
return value != "";
}
Please find examples here http://www.dhtmlx.com/docs/products/dhtmlxGrid/samples/04_dataprocessor/05_basic_validation.html
http://www.dhtmlx.com/docs/products/dhtmlxGrid/samples/04_dataprocessor/06_basic_validation_with_marks.html
http://www.dhtmlx.com/docs/products/dhtmlxGrid/samples/04_dataprocessor/07_basic_validation_with_message.html
And tutorial here 
http://dhtmlx.com/dhxdocs/doku.php?id=dhtmlxdataprocessor:validation
http://dhtmlx.com/dhxdocs/doku.php?id=dhtmlxgrid:validation_extension