if (selectpostbackdatafield != null)
{
index = int.parse(eventargument.substring(0, eventargument.indexof('_')));
int beginindex = eventargument.indexof('_') + 1;
int leng = eventargument.length - eventargument.indexof('_') - 1;
fieldvalue = eventargument.substring(beginindex, leng);
}
else
index = int.parse(eventargument);
this.selectedindex = index;
if (onselectpostback != null)