var record=datasetWuLiu.getFirstRecord();
var ids = "";
while(record!=null){
var id="";
if(record.getValue("select")){
id = record.getValue("materialId");
ids = ids +id+",";
}
record = record.getNextRecord();
}
if (ids.length>0){
ids= ids.substr(0,ids.length-1);
command.parameters().setValue("materialIds",ids);
}else{
alert("请选择");
return false;
}