KendoUI for ASP.NET MVC duplicates rows - asp.net-mvc

Question

KendoUI for ASP.NET MVC 2016.1.412 grid duplicating data at any update or destroy action. If you click Destroy command it call CREATE action for 10 (ten) times. So if I got 1 row after I destroy it I got 11 row of same data (different ID).
View is like this
#(Html.Kendo().Grid<CETSchoolERP.ViewModels.Administration.StudentsViewModel>()
.Name("grid")
.Columns(columns =>
{
columns.Bound(p => p.FirstName);
columns.Bound(p => p.LastName).Width(100);
columns.Bound(p => p.BirthDate).Width(100);
columns.Command(command => { command.Edit().Text(" "); command.Destroy().Text(" "); }).Width(180);
})
.ToolBar(toolbar => toolbar.Create())
.Editable(editable => editable.Mode(GridEditMode.PopUp))
.Pageable()
.Sortable()
.Scrollable()
.HtmlAttributes(new { style = "height:430px;" })
.DataSource(dataSource => dataSource
.Ajax()
.PageSize(20)
.Events(events => events.Error("error_handler"))
.Model(model => model.Id(p => p.StudentID))
.Create(create => create.Action("Students_Create", "Students"))
.Read(read => read.Action("Students_Read", "Students"))
.Update(update => update.Action("Students_Update", "Students"))
.Destroy(destroy => destroy.Action("Students_Destroy", "Students"))
)
)
Controller code
public StudentsController(ApplicationDbContext context)
{
_context = context;
}
// GET: Students
public IActionResult Index()
{
return View();
}
public IActionResult Students_Read([DataSourceRequest] DataSourceRequest request)
{
return Json(_context.Student.ToList().Select(student => new StudentsViewModel
{
FirstName = student.FirstName,
LastName = student.LastName,
BirthDate = student.BirthDate,
}).ToDataSourceResult(request));
}
[AcceptVerbs("Post")]
public ActionResult Students_Create([DataSourceRequest] DataSourceRequest request, StudentsViewModel student)
{
if (student != null && ModelState.IsValid)
{
var entity = new Student();
entity.FirstName = student.FirstName;
entity.LastName = student.LastName;
entity.BirthDate = student.BirthDate;
_context.Student.Add(entity);
_context.SaveChanges();
student.StudentID = (int)entity.StudentID;
}
return Json(new[] { student }.ToDataSourceResult(request, ModelState));
}
[AcceptVerbs("Post")]
public ActionResult Students_Update([DataSourceRequest] DataSourceRequest request, StudentsViewModel student)
{
if (student != null && ModelState.IsValid)
{
var entity = new Student();
entity.StudentID = student.StudentID;
entity.FirstName = student.FirstName;
entity.LastName = student.LastName;
entity.BirthDate = student.BirthDate;
_context.Student.Attach(entity);
_context.Entry(entity).State = EntityState.Modified;
_context.SaveChanges();
}
return Json(new[] { student }.ToDataSourceResult(request, ModelState));
}
[AcceptVerbs("Post")]
public ActionResult Students_Destroy([DataSourceRequest] DataSourceRequest request, StudentsViewModel student)
{
if (student != null)
{
var entity = new Student();
entity.StudentID = student.StudentID;
_context.Student.Attach(entity);
_context.Student.Remove(entity);
_context.SaveChanges();
}
return Json(new[] { student }.ToDataSourceResult(request, ModelState));
}
In debug mode any delete or update actions in grid only triggers Students_Create procedure 10 time. Delete or update never called.