MVC前台Post/Get异步获得数据时参数的取值问题

Post方法,返回text，后台获得Data

View

　　　　　　　　$.ajax({
type: "POST",
dataType: "text",//返回类型为文本
url:"/Order/AjaxGetCoupon?ids="+id,
data: { ConponCode: code, TotalPrice: totalPrice },
success: function (data) {
if (data == "False") {
ShowFailTip('服务器繁忙，请稍候再试！');
return;
}
else if (data == "No") {
ShowFailTip('您输入的优惠券不存在或已过期！');
return;
} else if (data == "Used") {
ShowFailTip('您输入的优惠券已使用！');
return;
} else if (data == "Limit") {
ShowFailTip('您输入的优惠券不满足最低消费金额！');
return;
} else {
$("#couponPriceId").text("￥" + data.split("|")[0]);
$("#payPriceId").text("￥" + data.split("|")[1]);
}
}
});

Code

[HttpPost]
public ActionResult AjaxGetCoupon(FormCollection Fm,int ids)
{//ids为url中的参数或后台获得URL后的参数 Request.QueryString["ids"]
if (string.IsNullOrWhiteSpace(Fm["ConponCode"]))
{
return base.Content("False");
}
string couponCode = Fm["ConponCode"];
decimal num = Globals.SafeDecimal(Fm["TotalPrice"], (decimal) 0M);
BLL.CouponInfo info = new BLL.CouponInfo();
Model.CouponInfo couponInfo = info.GetCouponInfo(couponCode, false);
if (couponInfo != null)
{
if (couponInfo.Status == 2)
{
return base.Content("Used");
}
if (couponInfo.LimitPrice >= num)
{
return base.Content("Limit");
}
ShoppingCartInfo cartInfo = new ShoppingCartHelper(base.currentUser.UserID).GetShoppingCart4Selected();
switch (info.GetUseStatus(cartInfo, couponInfo))
{
case 0:
return base.Content("No");

case 1:
{
string str2 = (num - couponInfo.CouponPrice).ToString("F");
return base.Content(couponInfo.CouponPrice.ToString("F") + "|" + str2);
}
case 2:
return base.Content("Used");

case 3:
return base.Content("Limit");

case 4:
return base.Content("CategoryLimit");

case 5:
return base.Content("ProductLimit");

case 6:
return base.Content("SKULimit");

case 7:
return base.Content("CategoryNo");

case 8:
return base.Content("ProductNo");

case 9:
return base.Content("SKUNo");
}
}
return base.Content("No");
}

若需要返回json则将 $.ajax 中 dataType: "json"

后台：public JsonResult AjaxGetCoupon(FormCollection Fm,int ids){

　　return Json(new { errCode =0,message= "非常抱歉" });

}

页面传参

location.href = " Order/SubmitOrder?sku=" + sku + "&g=" + groupbuyid;

public ActionResult SubmitOrder(string sku, int count = 1, int c = 0, int g = 0, string viewName = "SubmitOrder")
{

ShoppingCartInfo cartInfo = new ShoppingCartInfo();

return base.View(viewName, cartInfo);
}