Remove Selected Item From DropDown

How to Remove the Selected Item from DropdownList. Once the Item is Selected. Dropdown came from another Model.

My Model Looks given below;-

public int TaskId { get; set; }

[ForeignKey("TaskId")]

public virtual TaskMst TaskMst { get; set; }

[NotMapped]

public string Task { get; set; }

My Controller Looksgiven below:-

[HttpPost]

[ValidateAntiForgeryToken]

public async Task Create(TaskEntry taskEntry)

{

if ((!string.IsNullOrWhiteSpace(taskEntry.strStartDate)) && (Utility.isDate(taskEntry.strStartDate, DateFormats.ddMMyyyy)))

taskEntry.StartDate = Utility.stringToDate(taskEntry.strStartDate, DateFormats.ddMMyyyy, DateFormats.MMddyyyy);

else

ModelState.AddModelError("strStartDate", "Invalid Start Date..");

if (ModelState.IsValid)

{

db.TaskEntries.Add(taskEntry);

await db.SaveChangesAsync();

return RedirectToAction("Index");

}

ViewBag.TaskId = new SelectList(db.TaskMsts, "TaskId", "Task");

return View(taskEntry);

}

My View Look Given below:-

@Html.LabelFor(model => model.Task, "Task", htmlAttributes: new { @class = "control-label col-md-2" })

@Html.DropDownList("TaskId", null, "--Select--", htmlAttributes: new { @id = "TaskId", @class = "form-control select2", @onchange = "getpriority();" })

@Html.ValidationMessageFor(model => model.Task, "", new { @class = "text-danger" })

Please Suggest how to Remove once they item selected from the Dropdown.

1 Reply

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Suraj Kumar8y ago
You need to call a method which will return json result and you need to call it on change event of dropdown. After returning new list you need to loop through json list and assign its values and text to dropdownlist it has been shown below.