My webpage features a dropdown menu with a list of ID's to choose from. When a customer selects an option, it should update the price total displayed on the page. To achieve this functionality, I'm working on implementing an AJAX call that will update the total whenever a different ID is chosen from the dropdown.
$("#BrandId").on('focus', function () {
// Store the current value when focused and upon change
previous = this.value;
}).change(function () {
alert("Previous: " +previous);
sel = this.value;
alert("Selected: " +sel);
$.ajax({
cache: false,
type: "get",
contentType: "application/json; charset=utf-8",
url: '@Url.Action("GetBrandCost", "Shocks")',
data: JSON.stringify({ idp: previous, id: sel }),
dataType: "json",
aysnc: false,
success: function (data1) {
alert(data1);
//ShockTotal = $("#ShockTotal").html();
//ShockTotal = ShockTotal / 1;
////ShockTotal = ShockTotal - data1;
//$("#ShockTotal").html(data1);
}
});
});
Although the alerts work as expected, I'm encountering an issue where the AJAX call doesn't pass the IDs to the controller properly, resulting in the controller receiving null values.
public decimal GetBrandCost(string idp, string id)
{
decimal costp = 0;
decimal cost = 0;
if (id == "" || id == null || idp == "" || idp == null)
{
return 0;
}
ShockBrand brandp = db.ShockBrands.Find(idp);
costp = brandp.Cost;
ShockBrand brand = db.ShockBrands.Find(id);
cost = brand.Cost;
cost = cost - costp;
return cost;
}
As the values are null, the code flow hits the if statement, with the method returning zero within the success block. Despite trying to specify content types, it hasn't resolved the issue for me. I believe there might be a simple fix that I am missing.