I have some images that every images has a checkbox beside like this :
<input type="checkbox" name="select" value="<%=item.Id%>" />
Now I want to send the selected checkboxes to controller by clicking a hyperlink. I have :
<a href='<%: Url.Action("DeleteSelected", "Product", new { #ShopID = ViewBag.shopIDempty } ) %>'>Delete</a>
and in controller:
public ActionResult DeleteSelected(int[] select, int ShopID)
{
foreach (int checkBoxSelected in select)
{
//Do something...
}
return RedirectToAction("Index");
}
But nothing pass to int[] select and it is null always. What is wrong?
Do these==>
1) Make an array which contains the selected checkbox value
var delete= new Array();
$('.checkboxed').live('click', function () {
if ($(this)[0].checked == true) {
var itemdel= $(this).val();
delete.push(itemdel);
} else {
var remve = $(this).val();
for (var i = 0; i < delete.length; i++) {
if (delete[i] == remve) {
delete.splice(i, 1);
break;
}
}
}
});
2)Make an ajax call on clicking the hyper link
$.ajax({
type: 'POST',
contentType: 'application/json; charset=utf-8',
url: '/Product/DeleteSelected'
+ '?ShopID =' + ShopIdValue,
dataType: 'json',
data: $.toJSON(delete),
success: function (result) {
window.location.href=result;
},
async: false,
cache: false
});
3) Make your Action Like this
public ActionResult DeleteSelected(int[] select)
{
var shopid= Request["ShopID "];
}
Try this:
[HttpPost]
public ActionResult DeleteSelected(FormCollection collection)
{
try
{
string[] test = collection.GetValues("select");
}
catch (Exception ex)
{
return null;
}
}
I do want to note that the approach you are taking requires a form to wrap the all of the checkboxes or you need to specifically build an object to send to the controller as Syed showed. If you go the form approach, you will need to either use the a link to trigger the form submit or convert the a link to a submit button and have a hidden field for the ShopID.
Related
I have a function in jquery which creates a list of values being selected from a checkbox. Now I want to have this list in my controller action. I have converted this list to JSON but I am not able to pass it to the controller. I also tried creating a custom model corresponding to the json data.
Jquery Code
$("button").click(function () {
//alert("clicked");
var obj = {};
//var tempRadio = [];
for (var i = 1; i <= globalVar; i++) {
if ($("#" + i).prop("checked") == true) {
obj[i] = $('input[class=' + i + ']:checked').val();
}
}
$.ajax({
contentType: 'application/json; charset=utf-8',
dataType: 'json',
type: 'POST',
url: '#Url.Action("SkillAdd","User")',
data: JSON.stringify(obj),
//data: hello,
error:function ()
{
alert("Error");
},
success: function () {
alert(JSON.stringify(obj));
}
});
});
Controller Code
public ActionResult SkillAdd(List<string> Id, List<string> Name)
{
return View();
}
Controller Code with Custom Model
public ActionResult SkillAdd(List<MyModel> object)
{
return View();
}
You have an object in javascript but you need to create an array so that it can be mapped to List at post. So change your js code to be :
var obj = []; // it's array now
and then you will add items in it like in your loop:
obj.push( $('input[class=' + i + ']:checked').val());
and in your ajax call name the parameter what you have in your controller action:
data:{ Id : obj }
and now you can have a parameter in action method List<string> which would hold the data posted by ajax call.
public ActionResult SkillAdd(List<string> Id)
{
return View();
}
Hope it helps.
I have a div block in my view like this:
<div id="divStatus" style="margin-top:10px;width: 200px; height: 100px; overflow-y: scroll;">
</div>
then from the view, user clicks on a button that calls the controller. In the controller some tasks are executed so from the controller I want to update a div block within the view. In this div I print out phrasses.
How to do this?
example:
public ActionResult()
{
// Do something
Update_DIV_in_View("some thing has been done"); <--- DIV in the view must be updated by appending this message
// Do another thing
Update_DIV_in_VIEW("another thing has been done");<--- DIV in the view must be updated by appending this message
.... and so on
// All things done
Update_DIV_in_VIEW("All things have been done");<--- DIV in the view must be updated by appending this message
return View();
}
Create a second action in your controller which only shows the updated content of the div and on your normal page when you press the button load the status with an AJAX call (for example the jQuery.load() method).
You can do it as follows:
In your view use Ajax Form as follows:
#using (Ajax.BeginForm("ActionName", "ControllerName", new AjaxOptions { OnBegin = "beforeSubmitFunction()", HttpMethod = "POST",UpdateTargetId = "divStatus", OnComplete = "InsertRow()" }))
{
.. //your Html form Controls
}
function beforeSubmitFunction()
{
//Your code for before submitting...
}
Then in your controller return your partial view as result which will get updated in your div with id divStatus
[HttpPost]
public ActionResult Index(TypeName model)
{
return PartialView("PartialViewName", model);
}
Here are 3 examples what I am using:
example 1:
button (here with telerik css styling):
<a class="t-button t-button-icontext" onclick="ajaxCreateEquipment()"><span
class="t-icon t-add"></span>Create</a>
javascript: #equipment-table-container is the id of the target div:
<script type="text/javascript">
function ajaxCreateEquipment() {
$.ajax({
type: 'GET',
url: '#Url.Action("ShowCreate", "Equipment")',
dataType: 'html',
success: function (data) {
$('#equipment-table-container').html(data);
}
});
}
</script>
EquipmentController.cs:
[HttpGet]
public ActionResult ShowCreate()
{
// some calculation code, fetch model from DB something else
ViewData.Add("FormAction", "Create"); // some ViewData
return PartialView("Create", model); // returns the View html file
}
example 2:
function call here with id argument and Json return:
#{
var supplierQuoteId = Model.ID.ToString();
<a id="#supplierQuoteId" onclick="updateDiv(this.id)"></a>
}
javascript:
function updateDiv(id) {
var strUrl = "/LicenseTerm/UpdateUsedQuantity/" + id;
$.ajax({
type: "GET",
url: strUrl,
cache: false,
dataType: "json",
success: function (data) {
$('#licenseterm-usedquantity').html(data.sum);
}
});
}
LicenseTermController.cs
[HttpGet]
public JsonResult UpdateUsedQuantity(Guid id)
{
var licenseTerm = _repository.GetAll<LicenseTerm>().Where(l => l.ID == id).First();
int sum = 0;
foreach (LicenseAllocation l in licenseTerm.LicenseAllocations.Where(o => o.Deleted == false))
sum = sum + l.LicenseQuantity;
return Json(new { sum = sum }, JsonRequestBehavior.AllowGet);
}
example 3: simple get
function ajaxFieldDefinitionCreate(id) {
var strUrl = '/FieldDefinition/Create' + '/' + id.toString() + '?isRefreshAction=true';
$.get(strUrl, function (data) {
$('#equipmenttype-fielddefinition-createeditarea').html(data);
});
}
[HttpGet]
public ActionResult Create(Guid id, [Optional, DefaultParameterValue(false)] bool isRefreshAction)
{
var equipmentType = _equipmentTypeRepository.GetById(id);
var fieldDefinitionDto = new FieldDefinitionDto
{
ID = Guid.NewGuid(),
ParentName = equipmentType.Name,
};
return PartialView("Create", fieldDefinitionDto);
}
In response to the changes of the question, especially that the questioner would like to have more returns in the same Action:
the concept of HTTP request is to transmit relatively small pieces of data from the server to the client, which invoked the e.g. HTTP GET request.
You can not keep open the HTTP GET request for more transmissions.
I searched the web and extracted that especially HTML5 will address this requirement with the HTTP stream, but this is another topic. e.g.: I got this url: http://socket.io/ .
Bypass:
But as an idea of mine,
I would make a first ajax call to determine the count of the next requests, addressed in the controller Action1.
And then invoke several new requests in the success part of the first ajax request, with the url of the Action2, e.g. Calculate etc., which appends then the several pieces of data to the div content.
here some quickly invented javascript code:
function updateDiv() {
var strUrl = "/Home/RequestCount/";
$.ajax({
type: "GET",
url: strUrl,
cache: false,
dataType: "json",
success: function (count) {
var strUrlCalc = "/Home/Calc/";
for (var i = 0; i < count; i++) {
$.ajax({
type: "GET",
url: strUrlCalc,
cache: false,
dataType: "json",
success: function (data) {
$('#test').append(data);
}
});
}
}
});
}
I've got a cascading drop-drown using mvc. Something like, if you select a country in the first-dropdown, the states of that country in the second one should be populated accordingly.
At the moment, all seems fine and I'm getting Json response (saw it using F12 tools), and it looks something like [{ "stateId":"01", "StateName": "arizona" } , { "stateId" : "02", "StateName":"California" }, etc..] ..
I'd like to know how to populate my second-dropdown with this data. My second drop-down's id is "StateID". Any help would be greatly appreciated.
Below is the code used to produce the JSON Response from the server:
[HttpPost]
public JsonResult GetStates(string CountryID)
{
using (mdb)
{
var statesResults = from q in mdb.GetStates(CountryID)
select new Models.StatesDTO
{
StateID = q.StateID,
StateName = q.StateName
};
locations.statesList = stateResults.ToList();
}
JsonResult result = new JsonResult();
result.Data = locations.statesList;
return result;
}
Below is the client-side HTML, my razor-code and my script. I want to write some code inside "success:" so that it populates the States dropdown with the JSON data.
<script type="text/javascript">
$(function () {
$("select#CountryID").change(function (evt) {
if ($("select#CountryID").val() != "-1") {
$.ajax({
url: "/Home/GetStates",
type: 'POST',
data: { CountryID: $("select#CountryID").val() },
success: function () { alert("Data retrieval successful"); },
error: function (xhr) { alert("Something seems Wrong"); }
});
}
});
});
</script>
To begin with, inside a jQuery event handler function this refers to the element that triggered the event, so you can replace the additional calls to $("select#CountryID") with $(this). Though where possible you should access element properties directly, rather than using the jQuery functions, so you could simply do this.value rather than $(this).val() or $("select#CountryID").val().
Then, inside your AJAX calls success function, you need to create a series of <option> elements. That can be done using the base jQuery() function (or $() for short). That would look something like this:
$.ajax({
success: function(states) {
// states is your JSON array
var $select = $('#StateID');
$.each(states, function(i, state) {
$('<option>', {
value: state.stateId
}).html(state.StateName).appendTo($select);
});
}
});
Here's a jsFiddle demo.
Relevant jQuery docs:
jQuery.each()
jQuery()
In my project i am doing like this it's below
iN MY Controller
public JsonResult State(int countryId)
{
var stateList = CityRepository.GetList(countryId);
return Json(stateList, JsonRequestBehavior.AllowGet);
}
In Model
public IQueryable<Models.State> GetList(int CountryID)
{
var statelist = db.States.Where(x => x.CountryID == CountryID).ToList().Select(item => new State
{
ID = item.ID,
StateName = item.StateName
}).AsQueryable();
return statelist;
}
In view
<script type="text/javascript">
function cascadingdropdown() {
$("#stateID").empty();
$("#stateID").append("<option value='0'>--Select State--</option>");
var countryID = $('#countryID').val();
var Url="#Url.Content("~/City/State")";
$.ajax({
url:Url,
dataType: 'json',
data: { countryId: countryID },
success: function (data) {
$("#stateID").empty();
$("#stateID").append("<option value='0'>--Select State--</option>");
$.each(data, function (index, optiondata) {
$("#stateID").append("<option value='" + optiondata.ID + "'>" + optiondata.StateName + "</option>");
});
}
});
}
</script>
i think this will help you......
Step 1:
At very first, we need a model class that defines properties for storing data.
public class ApplicationForm
{
public string Name { get; set; }
public string State { get; set; }
public string District { get; set; }
}
Step 2:
Now, we need an initial controller that will return an Index view by packing list of states in ViewBag.StateName.
public ActionResult Index()
{
List<SelectListItem> state = new List<SelectListItem>();
state.Add(new SelectListItem { Text = "Bihar", Value = "Bihar" });
state.Add(new SelectListItem { Text = "Jharkhand", Value = "Jharkhand" });
ViewBag.StateName = new SelectList(state, "Value", "Text");
return View();
}
In above controller we have a List containing states attached to ViewBag.StateName. We could get list of states form database using Linq query or something and pack it to ViewBag.StateName, well let’s go with in-memory data.
Step 3:
Once we have controller we can add its view and start creating a Razor form.
#Html.ValidationSummary("Please correct the errors and try again.")
#using (Html.BeginForm())
{
<fieldset>
<legend>DropDownList</legend>
#Html.Label("Name")
#Html.TextBox("Name")
#Html.ValidationMessage("Name", "*")
#Html.Label("State")
#Html.DropDownList("State", ViewBag.StateName as SelectList, "Select a State", new { id = "State" })
#Html.ValidationMessage("State", "*")
#Html.Label("District")
<select id="District" name="District"></select>
#Html.ValidationMessage("District", "*")
<p>
<input type="submit" value="Create" id="SubmitId" />
</p>
</fieldset>
}
You can see I have added proper labels and validation fields with each input controls (two DropDownList and one TextBox) and also a validation summery at the top. Notice, I have used which is HTML instead of Razor helper this is because when we make JSON call using jQuery will return HTML markup of pre-populated option tag. Now, let’s add jQuery code in the above view page.
Step 4:
Here is the jQuery code making JSON call to DDL named controller’s DistrictList method with a parameter (which is selected state name). DistrictList method will returns JSON data. With the returned JSON data we are building tag HTML markup and attaching this HTML markup to ‘District’ which is DOM control.
#Scripts.Render("~/bundles/jquery")
<script type="text/jscript">
$(function () {
$('#State').change(function () {
$.getJSON('/DDL/DistrictList/' + $('#State').val(), function (data) {
var items = '<option>Select a District</option>';
$.each(data, function (i, district) {
items += "<option value='" + district.Value + "'>" + district.Text + "</option>";
});
$('#District').html(items);
});
});
});
</script>
Please make sure you are using jQuery library references before the tag.
Step 5:
In above jQuery code we are making a JSON call to DDL named controller’s DistrictList method with a parameter. Here is the DistrictList method code which will return JSON data.
public JsonResult DistrictList(string Id)
{
var district = from s in District.GetDistrict()
where s.StateName == Id
select s;
return Json(new SelectList(district.ToArray(), "StateName", "DistrictName"), JsonRequestBehavior.AllowGet);
}
Please note, DistrictList method will accept an ‘Id’ (it should be 'Id' always) parameter of string type sent by the jQuery JSON call. Inside the method, I am using ‘Id’ parameter in linq query to get list of matching districts and conceptually, in the list of district data there should be a state field. Also note, in the linq query I am making a method call District.GetDistrict().
Step 6:
In above District.GetDistrict() method call, District is a model which has a GetDistrict() method. And I am using GetDistrict() method in linq query, so this method should be of type IQueryable. Here is the model code.
public class District
{
public string StateName { get; set; }
public string DistrictName { get; set; }
public static IQueryable<District> GetDistrict()
{
return new List<District>
{
new District { StateName = "Bihar", DistrictName = "Motihari" },
new District { StateName = "Bihar", DistrictName = "Muzaffarpur" },
new District { StateName = "Bihar", DistrictName = "Patna" },
new District { StateName = "Jharkhand", DistrictName = "Bokaro" },
new District { StateName = "Jharkhand", DistrictName = "Ranchi" },
}.AsQueryable();
}
}
Step 7:
You can run the application here because cascading dropdownlist is ready now. I am going to do some validation works when user clicks the submit button. So, I will add another action result of POST version.
[HttpPost]
public ActionResult Index(ApplicationForm formdata)
{
if (formdata.Name == null)
{
ModelState.AddModelError("Name", "Name is required field.");
}
if (formdata.State == null)
{
ModelState.AddModelError("State", "State is required field.");
}
if (formdata.District == null)
{
ModelState.AddModelError("District", "District is required field.");
}
if (!ModelState.IsValid)
{
//Populate the list again
List<SelectListItem> state = new List<SelectListItem>();
state.Add(new SelectListItem { Text = "Bihar", Value = "Bihar" });
state.Add(new SelectListItem { Text = "Jharkhand", Value = "Jharkhand" });
ViewBag.StateName = new SelectList(state, "Value", "Text");
return View("Index");
}
//TODO: Database Insertion
return RedirectToAction("Index", "Home");
}
Try this inside the ajax call:
$.ajax({
url: "/Home/GetStates",
type: 'POST',
data: {
CountryID: $("select#CountryID").val()
},
success: function (data) {
alert("Data retrieval successful");
var items = "";
$.each(data, function (i, val) {
items += "<option value='" + val.stateId + "'>" + val.StateName + "</option>";
});
$("select#StateID").empty().html(items);
},
error: function (xhr) {
alert("Something seems Wrong");
}
});
EDIT 1
success: function (data) {
$.each(data, function (i, val) {
$('select#StateID').append(
$("<option></option>")
.attr("value", val.stateId)
.text(val.StateName));
});
},
I know this post is a year old but I found it and so might you. I use the following solution and it works very well. Strong typed without the need to write a single line of Javascript.
mvc4ajaxdropdownlist.codeplex.com
You can download it via Visual Studio as a NuGet package.
You should consider using some client-side view engine that binds a model (in your case JSON returned from API) to template (HTML code for SELECT). Angular and React might be to complex for this use case, but JQuery view engine enables you to easily load JSON model into template using MVC-like approach:
<script type="text/javascript">
$(function () {
$("select#CountryID").change(function (evt) {
if ($("select#CountryID").val() != "-1") {
$.ajax({
url: "/Home/GetStates",
type: 'POST',
data: { CountryID: $("select#CountryID").val() },
success: function (response) {
$("#stateID").empty();
$("#stateID").view(response);
},
error: function (xhr) { alert("Something seems Wrong"); }
});
}
});
});
</script>
It is much cleaner that generating raw HTML in JavaScript. See details here: https://jocapc.github.io/jquery-view-engine/docs/ajax-dropdown
Try this:
public JsonResult getdist(int stateid)
{
var res = objdal.getddl(7, stateid).Select(m => new SelectListItem { Text = m.Name, Value = m.Id.ToString() });
return Json(res,JsonRequestBehavior.AllowGet);
}
<script type="text/javascript">
$(document).ready(function () {
$("#ddlStateId").change(function () {
var url = '#Url.Content("~/")' + "Home/Cities_SelectedState";
var ddlsource = "#ddlStateId";
var ddltarget = "#ddlCityId";
$.getJSON(url, { Sel_StateName: $(ddlsource).val() }, function (data) {
$(ddltarget).empty();
$.each(data, function (index, optionData) {
$(ddltarget).append("<option value='" + optionData.Text + "'>" + optionData.Value + "</option>");
});
});
});
});
</script>
I have the following where I'm trying to send list/array to MVC controller method:
var id = [];
var inStock = [];
$table.find('tbody>tr').each(function() {
id.push($(this).find('.id').text());
inStock.push($(this).find('.stocked').attr('checked'));
});
var params = {};
params.ids = id;
params.stocked = inStock;
$.getJSON('MyApp/UpdateStockList', params, function() {
alert('finished');
});
in my contoller:
public JsonResult UpdateStockList(int[] ids, bool[] stocked) { }
both paramaters are null.
Note that if I change the params to single items
params.ids = 1;
params.stocked = true;
public JsonResult UpdateStockList(int ids, bool stocked) { }
then it works ok, so I don't think it's a routing issue.
Try setting the traditional flag:
$.ajax({
url: '/home/UpdateStockList',
data: { ids: [1, 2, 3], stocked: [true, false] },
traditional: true,
success: function(result) {
alert(result.status);
}
});
works fine with:
public ActionResult UpdateStockList(int[] ids, bool[] stocked)
{
return Json(new { status = "OK" }, JsonRequestBehavior.AllowGet);
}
Besides calling .ajax() instead of .getJSON() as Darin suggests or setting the global jQuery.ajaxSettings.traditional to true as jrduncans suggests, you can also pass the result of calling the jQuery .param() function on your params object:
var id = [];
var inStock = [];
$table.find('tbody>tr').each(function() {
id.push($(this).find('.id').text());
inStock.push($(this).find('.stocked').attr('checked'));
});
var params = {};
params.ids = id;
params.stocked = inStock;
$.getJSON('MyApp/UpdateStockList', $.param(params, true), function() {
alert('finished');
});
Unfortunately, while it seems that jquery provides a "traditional" flag to toggle this behavior on jQuery.ajax, it does not on jQuery.getJSON. One way to get around this would to be set the flag globally:
jQuery.ajaxSettings.traditional = true;
See the documentation for jQuery.param: http://api.jquery.com/jQuery.param/
Also see the release notes for this change: http://jquery14.com/day-01/jquery-14 (search for 'traditional')
In the view, generate multiple named fields (not id, as id should be unique per field), noting the use of Name not name:
#foreach (var item in Model.SomeDictionary)
{
#Html.TextBoxFor(modelItem => item.Value.SomeString, new { Name = "someString[]" })
}
Then retrieve the input field values using jQuery, so:
var myArrayValues = $('input[name="someString[]"]').map(function () { return $(this).val(); }).get();
You can use this directly in jQuery / AJAX as follows:
$.ajax({
type: "POST",
url: "/MyController/MyAction",
dataType: 'json',
data: {
someStrings: $('input[name="someString[]"]').map(function () { return $(this).val(); }).get(),
someDates: $('input[name="someDate[]"]').map(function () { return $(this).val(); }).get(),
Then in the controller action in MVC:
[HttpPost]
public JsonResult MyAction(string[] someStrings, DateTime[] someDates...
How can you enable multiple selection in a jqGrid, and also allow users to delete all of the selected rows using an ASP.NET MVC controller?
I have set the delete url property to my /Controller/Delete method, and this works fine if one record is selected. However, if multiple records are selected, it attempts to send a null value back to the controller where an integer id is required.
You can, but you have to write code for it:
deleteSelected: function(grid) {
if (!grid.jqGrid) {
if (console) {
console.error("'grid' argument must be a jqGrid");
}
return;
}
var ids = grid.getGridParam('selarrrow');
var count = ids.length;
if (count == 0) return;
if (confirm("Delete these " + count + " records?")) {
$.post("DeleteMultiple",
{ ids: ids },
function() { grid.trigger("reloadGrid") },
"json");
}
}
[HttpPost]
public ActionResult DeleteMultiple(IEnumerable<Guid> ids)
{
if (!Request.IsAjaxRequest())
{
// we only support this via AJAX for now.
throw new InvalidOperationException();
}
if (!ids.Any())
{
// JsonError is an internal class which works with our Ajax error handling
return JsonError(null, "Cannot delete, because no records selected.");
}
var trans = Repository.StartTransaction();
foreach (var id in ids)
{
Repository.Delete(id);
}
trans.Commit();
return Json(true);
}
I want to update this for MVC2 and jquery 1.4.2, if you want to pass array parameters to mvc2:
var ids = $("#grid").getGridParam('selarrrow');
var postData = { values: ids };
if (confirm("Delete these " + count + " records?")) {
$.ajax({
type: "POST",
traditional: true,
url: "GridDBDemoDataDeleteMultiple",
data: postData,
dataType: "json",
success: function() { $("#grid").trigger("reloadGrid") }
});
}
check http://jquery14.com/day-01/jquery-14 ajax part
thx