Webgrid not refreshing after delete MVC

问题

I am deleting a row in my webgrid , and redirecting to my GET index as normal after delete. However as expected my view is showing the old deleted row still in the grid. I know this is by design and i should be able to set the Modelstate to clear , or remove the item individually to achieve this :

 ModelState.Remove("id");

 foreach (var key in ModelState.Keys.Where(m => m.StartsWith("id")).ToList())
            ModelState.Remove(key);

 ModelState.Remove("Applicant.ApplicantId");

Or even :

ModelState.Clear()

However none have working for me.

Here is my delete method (simplified -all error handling and non necessary code removed )

 public ActionResult DeleteApplicant(int id)
    {

            var q =
                        (from a in context.Applicants
                         where a.ApplicantId == id
                         select a).Single<Applicant>();



            q.ApplicantDocuments.ToList().ForEach(r => context.ApplicantDocuments.Remove(r));

            context.Applicants.Remove(q);
            context.SaveChanges();



        foreach (var key in ModelState.Keys.Where(m => m.StartsWith("id")).ToList())
        ModelState.Remove(key);

        TempData["SuccessMessage"] = "Successfully deleted row.";

        return RedirectToAction("Index");
    }

And here is my call to my delete method from the view :

  , grid.Column(format: (item) => @Html.ActionLink("Delete", "DeleteApplicant",
                                      new { id = item.ApplicantId }, new { @class = "delete-link" }), style: "DeleteButton")

I have looked at various posts on stackoverflow etc but none seem to solve my issue : MVC 3 The View is not being refreshed after model submit

I have tried also tried re-directing to the Index action via jquery and calling the delete controller action with ajaxOptions , but this hasn't worked either.

            , grid.Column(format: (item) => @Ajax.ActionLink("Delete", "DeleteApplicant",
    new { id = item.ApplicantId },
    new  AjaxOptions  { HttpMethod = "GET" , OnSuccess= "reloadGrid" }))

And adding a little script to call the home index:

 function reloadGrid() {
    var pathArray = window.location.pathname.split('/');
    var segment_1 = pathArray[1];
    var newURL = window.location.protocol + "//" + window.location.host + "/" + segment_1 + "/Home/Index";

    $.ajax(
        {
            type: "GET",
            url: newURL,
            data: "{}",
            cache: false,
            dataType: "html",
            success: function (data)
            { $().html(data); }
        })
}

I am obviously doing something wrong. Is there any other way i can force a refresh of the page in a different way or can anyone spot anything obviously wrong in my current approach. Thanks in advance.

Note: I do have my webgrid markup on my Index view and not in a separate partial viewbut i don't think this should be causing this?

Update :

Here is up GET method as requested: (for context, the filters object is used when search button is clicked and page is posted back ,no filters applied in initial page load)

public ActionResult Index(string page)
        {
                /////Peform paging initiation
                int pageIndex = 0;
                if (!string.IsNullOrEmpty(page))
                {
                    pageIndex = int.Parse(page) - 1;
                }

                ////initialize total record count and filter results object
                int totalRecordCount = 0;

                var filters = new ApplicantSearchFilter();

                ////Perform search with paging
                var applicants = this.GetApplicantsPaging(filters ,pageIndex, out totalRecordCount);

                ////Return view type
                var data = new ApplicantViewModel()
                {
                    Filters =filters ,
                    TotalRecordCount = totalRecordCount,
                    ApplicantReportLists = applicants,
                    PageIndex = pageIndex,
                };

                ////return Index view passing data result to build it
                return this.View("Index", data);
            }
        }

回答1:

I have finally managed to get this working.

If it helps anyone else here is what i did in the end. I used a solution posted by Dror here : How to achieve edit and delete on Webgrid of MVC3 Razor? . Where he turned a GET delete call from the webgrid into a post. Not exactly what i was looking for but it works.

Does anyone have a better , alternative solution ?

View Code :

added Function :

@functions{
  string Delete(dynamic p)
  {
    string actionController = Url.Action("Delete", "Admin", new {id=p.AccountId});
    return "<form style='display:inline;' method='post' action='" + actionController + "'><input type='submit' value='Delete' onclick=\"return confirm('Are you sure?')\"/></form>";
  }
}

and changed my delete call in my webgrid to :

grid.Column(header: "", format: p => Html.Raw(Delete(p)))

In the Controller:

[HttpPost]
public ActionResult Delete(int id)
{
   PerformDelete(id);
   return RedirectToAction("Index");
}

来源：https://stackoverflow.com/questions/23676962/webgrid-not-refreshing-after-delete-mvc

标签

asp.net-mvc

razor

entity-framework-5

webgrid