Parameters dictionary null

Question

1.00/5 (1 vote)

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Error :

The parameters dictionary contains a null entry for parameter 'id' of non-nullable type 'System.Int32' for method 'System.Web.Mvc.ActionResult Holiday_approve(Int32)' in 'layout_wise_minicrm.Controllers.holiday_scheduleController'. An optional parameter must be a reference type, a nullable type, or be declared as an optional parameter. Parameter name: parameters

[HttpGet]
public ActionResult Holiday_approve()
{
ViewBag.applholiday = crm.manual_holiday.ToList();

return View();
}

[HttpPost]
public ActionResult Holiday_approve(int id)
{
ViewBag.applholiday = crm.manual_holiday.ToList();

var details = crm.manual_holiday.SingleOrDefault(m => m.Id == id);

details.Approved_status = true;

crm.SaveChanges();
return RedirectToAction("Holiday_approve");

}

What I have tried:

i have been change into routeconfig as well as action parameters (int? id) but still not resolved issue.. and did ajax jquery code for fetch id ..

view code:

<input type="submit" id="btnapprove" onclick="holidayapprove(@data.Id);">

function holidayapprove(Id) {
$.ajax({
type: "POST",
url: '@Url.Action("Holiday_approve", "holiday_schedule")',
cache: false,
data: { Id:Id},
success: function (result) {

},
failure: function (result) {
alert("Server Error");
}
});
}

Posted 9-May-17 23:42pm

jay gandhi

Updated 10-May-17 0:02am

v2

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Ramesh Kumar Barik · Answer 1 · 2017-05-10T00:02:00

Solution 1

Refer this link.

http://stackoverflow.com/questions/30898422/an-optional-parameter-must-be-a-reference-type-a-nullable-type-or-be-declared

1. If you want to call this action method by ajax call then change the button type to "button"
2. In Ajax call:

function holidayapprove(Id) {
$.ajax({
type: "POST",
url: '@Url.Action("Holiday_approve", "holiday_schedule")',
cache: false,
data: { id:Id},
success: function (result) {

},
failure: function (result) {
alert("Server Error");
}
});
}

Try this .

Posted 10-May-17 0:02am

Ramesh Kumar Barik

Comments

jay gandhi 10-May-17 6:05am

thankiew Ramesh Kumar i would try it .... thanks for reply

jay gandhi 10-May-17 6:09am

thankiew Ramesh Kumar it's work good ... thanks again

Ramesh Kumar Barik 10-May-17 6:12am

You most welcome :)
Happy coding :)