how to post json array list to web service method?

Question

i write two functions in jquery client side and c# asp.net server side , i try post json list object to web method but i see error..

jquery code :

function UpdateCart(tableid) {
var page = "Account/Cart.aspx";
var method = "Update_Cart";
var url = "http://" + host + "/" + page + "/" + method;
$(".popup").show();
var cartlist = new Array();
for (var i = 68; i < 71; i++) {
 var cart = new Object();
 cart.ID = i;
 cart.Quantity = 6;
 cartlist.push(cart);
}
var jsonArray = JSON.parse(JSON.stringify(cartlist))
$.ajax({
 type: "POST",
 url: url,
 data: jsonArray,
 contentType: "application/json; charset=utf-8",
 datatype: "json",
 async: "true",
 success: function (response) {
 // success message or do
 $(".errMsg ul").remove();
 var myObject = eval('(' + response.d + ')');
 if (myObject == 1) {
 window.location.href = "http://" + host + "/Account/cart";
 } else {
 $(".errMsg").text("نام کاربری یا رمز اشتباه است");
 $(".errMsg").removeClass("alert");
 $(".errMsg").addClass("alert alert-danger");
 }
 },
 error: function (response) {
 alert(response.status + ' ' + response.statusText);
 }
});
}

c# web method :

[WebMethod]
public static string Update_Cart(string[] Carts)
{
 if (Carts != null)
 {
 foreach (var item in Carts)
 {
 com_Shop_Carts cart = new com_Shop_Carts()
 {
 Quantity = item.Quantity,
 AddDate = DateTime.Now
 };
 com.shop.ProductManager.Update_Cart(item.ID, cart).ToString();
 }
 }
 return "1";
}

after run i see error 500 and i can't resolve it please give me solution for resolve it.

• Manoj: Try this data: {Carts: jsonArray},
• Tarrah Arshad: contact to me tehhitech [at] live.com
• Tarrah Arshad: not work it. error 500 is

Answer 1

Apart from this : var jsonArray = JSON.parse(JSON.stringify(cartlist))

Try this : var json={"Carts":cartlist}; then, var jsonArray=JSON.stringify(json);

and remove datatype:json from the ajax call.

Hope this helps.

• CY_Techie: Make sure your URL is correct. URL should be like this : url: "FileName.aspx/Update_Cart",