how to get ID from URL in asp.net MVC controller - asp.net-mvc

Question

I want to get the ID from URL in ASP.NET MVC Controller and insert it into Project_ID, the bellow is my code, i tried but its now working for me.
http://localhost:20487/ProjectComponent/Index/1
My Controller
[HttpPost]
public JsonResult SaveComponent(OrderVM O, int id)
{
bool status = false;
if (ModelState.IsValid)
{
using (Entities db = new Entities())
{
ProjComponent ProjComponent = new ProjComponent { project_id = id, title = O.title, description = O.description };
foreach (var i in O.ProjComponentActivities)
{
ProjComponent.ProjComponentActivity.Add(i);
}
db.ProjComponents.Add(ProjComponent);
db.SaveChanges();
status = true;
}
}
}

Answer 1

You can always use a hidden field and update it by jquery/javscript and send it to back end in ajax helper.....
Make sure 1.name should be exactly name as ActionMethod param and 3.Jquery ,jQuery Validate and jQuery unobstrusive ajax is loaded correctly
My code .cshtml
<script src="~/Scripts/jquery-2.1.4.min.js"></script>
<script src="~/Scripts/jquery.validate.min.js"></script>
<script src="~/Scripts/jquery.validate.unobtrusive.min.js"></script>
<script src="~/Scripts/jquery.unobtrusive-ajax.min.js"></script>
<div>
#{
AjaxOptions options = new AjaxOptions();
options.HttpMethod = "POST";
options.OnBegin = "OnBeginRequest";
options.OnSuccess = "OnSuccessRequest";
options.OnComplete = "OnCompleteRequest";
options.OnFailure = "OnFailureRequest";
// options.Confirm = "Do you want to Add Country ?";
options.UpdateTargetId = "divResponse";
options.InsertionMode = InsertionMode.InsertAfter;
}
#using (Ajax.BeginForm("AjaxSend", "Stackoverflow", options))
{
<input type="hidden" name="project_id" id="project_id" value="project_id" />
<input type="submit" value="Click me" />
}
</div>
<div id="divResponse">
</div>
<script>
$(function() {
var url = window.location.href;
var array = url.split('/');
var lastsegment = array[array.length - 1];
console.log(lastsegment);
$('#project_id').val(lastsegment);
});
function OnBeginRequest() {
console.log('On Begin');
}
function OnCompleteRequest() {
console.log('On Completed');
}
function OnSuccessRequest() {
console.log('On Success');
}
function OnFailureRequest() {
console.log('On Failure');
}
</script>
and Controller
[HttpPost]
public JsonResult AjaxSend(String project_id)
{
//rest goes here
return Json(new { Success = true });
}
this link may help link

Answer 2

you can get the id from URL Like This:
Cotroller:
public ActionResult Index(int id)
{
ViewBag.ID = id;
Your Code......
return View(...);
}
View:
#{
ViewBag.Title = "Index";
var ID = ViewBag.ID;
}
Now you have an ID in the variable