Getting Error while hitting Delete Button?

Question

Controller

// GET: Admin/UserDefinedFields/Delete/5

public ActionResult Delete(int? id)

{

if (id == null)

{

return new HttpStatusCodeResult(HttpStatusCode.BadRequest);

}

using (var dbContextScope = _dbContextScopeFactory.CreateReadOnly())

{

UserCode userCode = attrRepo.FindBy<UserCode>(uc => uc.Id == id).FirstOrDefault();

if (userCode == null)

{

return HttpNotFound();

}

bool isUsed = false;

foreach (UserCodeValidValue ucvv in userCode.UserCodeValidValues)

{

if (ucvv.UserCodeValues.Count > 0)

{

isUsed = true;

break;

}

}

UserDefinedFieldsViewModel model = userCode;

model.IsUsed = isUsed;

return PartialView(model);

}

}

// POST: Admin/UserDefinedFields/Delete/5

[HttpPost, ActionName("Delete")]

[ValidateAntiForgeryToken]

public ActionResult DeleteConfirmed(UserDefinedFieldsViewModel model)

{

using (var dbContextScope = _dbContextScopeFactory.Create())

{

try

{

attrRepo.DeleteUserDefinedField(model.Id, _Login.GetCurrentUser());

dbContextScope.SaveChanges();

}

catch (Exception e)

{

logger.ErrorFormat("Exception deleting attribute", e);

ModelState.AddModelError("", "Error deleting attribute");

return PartialView(model);

}

}

return RedirectToAction("Index");

}

-------------------------------------------------------------------------------------------------------------------------

@model Redi2.RMIM.Web.Areas.Admin.Models.UserDefinedFieldsViewModel

@using (Html.BeginForm("Delete", "UserDefinedFields", FormMethod.Post))

{

<div class="modal-header">

<h4 class="modal-title" id="myModalLabel">Delete Attribute</h4>

<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>

</div>

<div class="modal-body">

@if (Model.IsUsed)

{

<h4 class="text-danger"><i class="fa fa-exclamation"></i> This attribute is in use, so you cannot delete it.</h4>

}

else

{

<h4>Are you sure you want to delete this attribute?</h4>

}

<div class="form-horizontal">

<hr />

@Html.AntiForgeryToken()

@Html.ValidationSummary(true, "", new { @class = "text-danger" })

@Html.HiddenFor(model => model.Id)

@Html.HiddenFor(model => model.IsUsed)

<dl class="row">

<dt class="col-5 control-label">

@Html.DisplayNameFor(model => model.Name)

</dt>

<dd class="col-6">

@Html.DisplayFor(model => model.Name)

</dd>

<dt class="col-5 control-label">

@Html.DisplayNameFor(model => model.Description)

</dt>

<dd class="col-6">

@Html.DisplayFor(model => model.Description) &nbsp;

</dd>

<dt class="col-5 control-label">

@Html.DisplayNameFor(model => model.UserCodeType)

</dt>

<dd class="col-6">

@Html.DisplayFor(model => model.UserCodeType)

</dd>

</dl>

</div>

</div>

<div class="modal-footer">

@if (!Model.IsUsed)

{

<input type="submit" value="Delete" id="submitButton" class="btn btn-primary" />

}

<button type="button" class="btn btn-outline" data-dismiss="modal">Cancel</button>

</div>

}

 

Error