How can i pass the timestamp with my Ajax.actionlink - entity-framework-4.1

Question

i have the folloiwng Index view that show a list of objects and a Delete Ajax.actionlink beside each object:-
<legend>#Model.Where(d => d.VisitStatu.Description.ToUpper().Equals("ASSINGED")).Count() #ViewBag.subtitle</legend>
<table>
<tr>
<th>Patient Full Name </th>
<th>Created BY</th>
<th></th>
</tr>
#foreach (var item in Model.Where(d => d.VisitStatu.Description.ToUpper().Equals("ASSINGED")))
{
<tr id = #item.VisitID>
<td>#Html.DisplayFor(modelItem => item.Patient.FullName)</td>
<td>#Html.DisplayFor(modelItem => item.CreatedBy)</td>
<td>#Ajax.ActionLink("Delete",
"Delete", "Visit",
new { id = item.VisitID },
new AjaxOptions
{
HttpMethod = "Post",
OnSuccess = "deletionconfirmation",
OnFailure = "deletionerror"
}
</td> </tr>
where the Ajax.actionlink will call the following Post Action Method:-
[HttpPost]
public ActionResult Delete(int id)
{ try
{ var v = repository.GetVisit(id);
if (!(v.Editable(User.Identity.Name)))
{return View("NotFound"); }
repository.DeleteVisit(v);
repository.Save();
return Json(new { IsSuccess = "True", id = id, description = v.Date.ToString() }, JsonRequestBehavior.AllowGet);
}
catch (DbUpdateConcurrencyException)
{
return Json(new { IsSuccess = "False" }, JsonRequestBehavior.AllowGet);
}
catch (OptimisticConcurrencyException)
{
return Json(new { IsSuccess = "False" }, JsonRequestBehavior.AllowGet);
}}
But currently if the user clicks on the Delete link and the record was modified by another user then no DbUpdateConcurrencyException will be raised ,, as i am not passing the timestamp to the delete action method... so how i can include the timestamp values with the Delete ajax.actionlink?
//Hint the object already include a timestamp propert.
BR

Answer 1

You could pass it as query string parameter, the same way you are passing the id:
#Ajax.ActionLink(
"Delete",
"Delete",
"Visit",
new {
id = item.VisitID,
timestamp = item.Timestamp
},
new AjaxOptions
{
HttpMethod = "Post",
OnSuccess = "deletionconfirmation",
OnFailure = "deletionerror"
}
)
and then have the Delete controller action take a timestamp parameter.