//后台

[HttpPost]

public JsonResult CheckStock(IEnumerable<pvIdsCount> pvIds)

{

}

public class pvIdsCount
{
public int pvId { set; get; }


public int count { set; get; }
}

//前台

$(document).ready(function () {
$('#checkout').click(function ()
{

var productIdCounntList = [];
var allPvId = $(".productVariantIdAll");
$.each(allPvId,function (index,data) {
var productIdCounnt = { pvId: data.getAttribute("data-Id"),count: data.getAttribute("data-Count")};
productIdCounntList.push(productIdCounnt);
});
$.ajax({
url:"@Url.Action("CheckStock")",
type:"POST", //复杂对象传值用Post，
data: JSON.stringify ({ pvIds: productIdCounntList }), //SON.stringify ---must 用来序列化
dataType: "json",
contentType: 'application/json; charset=utf-8', //must
error: function () {
alert("1");
},
success: function (data) {

}