/**
* 排序汇总
* */
var result = Enumerable.From(vm.productList).GroupBy("$.goods_id", null,
function (key, g) {
var result = {
currency: key,
total: g.Sum(c => parseInt(c.num == " " ? 0 : c.num))
}
return result;
}).ToArray(); /**
* FirstOrDefault 获取第一个
* */
vm.productList.forEach(function (item) {
var arrRes = Enumerable.From(result).FirstOrDefault(-1,x => x.currency == item.goods_id);
if (arrRes != "" && arrRes != null && arrRes != undefined && arrRes.currency == item.goods_id) { item.FOrderByNum = parseInt(arrRes.total) ;
}
})
//排序
var productList = Enumerable.From(vm.productList).OrderByDescending("x=>x.FOrderByNum").ToArray();//降序OrderByDescending()
最后实现的效果就是:按照最大的数量从上往下排序