I try to send a list of object to controller but controller always receives it as null.
var model= #Html.Raw(Json.Encode(Model.MultipleElements));
jQuery.ajax({
type: 'GET',
contentType: 'application/json',
url: '#Url.Action("AddField", "Flux")',
data: model,
success: function (response) {
$(".destinationMultiple").html(response);
}
});
And here is my controller action
public PartialViewResult AddField(List<Destination> model)
{
return PartialView("_myPartialView");
}
You can use Ajax.Beginform. If you want you can do the following, which explains how to pass arrays from View to Controller.
View/Controller
namespace Testy20161006.Controllers
{
public class Destination
{
public string aDestination { get; set; }
}
public class TahtohViewModel
{
public List<Destination> MultipleElements { get; set; }
}
public class HomeController : Controller
{
[HttpPost]
public PartialViewResult AddField(List<Destination> MultipleElements)
{
List<String> sendout = new List<string>();
foreach (Destination dest in MultipleElements)
{
sendout.Add(dest.aDestination);
}
ViewBag.SendoutList = sendout;
return PartialView("_myPartialView");
}
public ActionResult Tut149()
{
Destination dest1 = new Destination { aDestination = "adest1" };
Destination dest2 = new Destination { aDestination = "adest2" };
Destination dest3 = new Destination { aDestination = "adest3" };
TahtohViewModel tahtoViewModel = new TahtohViewModel { MultipleElements = new List<Destination>() };
tahtoViewModel.MultipleElements.Add(dest1);
tahtoViewModel.MultipleElements.Add(dest2);
tahtoViewModel.MultipleElements.Add(dest3);
return View(tahtoViewModel);
}
View
#model Testy20161006.Controllers.TahtohViewModel
#using Testy20161006.Controllers
#{
Layout = null;
}
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>Tut149</title>
<script type="text/javascript" language="javascript" src="https://code.jquery.com/jquery-3.3.1.js"></script>
<script type="text/javascript">
$(function () {
$("#theButton").click(function () {
var items = [];
var q = $("input[name='theElemsName']");
$.each(q, function (index, thevalue) {
var item = {};
item.aDestination = thevalue.value;
items.push(item);
});
jQuery.ajax({
type: 'POST',
contentType: 'application/json',
url: '#Url.Action("AddField", "Home")',
data: JSON.stringify(items),
success: function (response) {
//alert("success");
$(".destinationMultiple").html(response);
}
});
})
})
</script>
</head>
<body>
<div>
<table>
#{ var index = 0;}
#foreach (Destination item in Model.MultipleElements)
{
<tr><td>Item <span>#(index++)</span></td><td data-multipleelements="#(index)">#Html.TextBox(item.aDestination, null, new { Name = "theElemsName", Value = item.aDestination })</td></tr>
}
</table>
<input type="button" id="theButton" value="Add Field" />
<div class="destinationMultiple"></div>
</div>
</body>
</html>
Partial View
my partial view
#foreach (string item in ViewBag.SendoutList)
{
<div>#item</div>
}
Related
I have a single page UI, which looks like below .
on the UI there are two checkboxes, when user toggle the states of checkbox, I use ajax to post the status to HomeController in a POST action.
after updated the model in POST action with the new checkboxes states, I redirect back to GET action to return a view.
however, the UI does not refresh with the new model.
can someone help on this ? thanks.
Views/Home/Index.cshtml
#{
Layout = "_Layout";
}
#model WebApplication5.Controllers.HomeModel;
<h1>STS</h1>
<div>
<input type="checkbox" id="UseVersionCheckBox" />Use version v1 in url
</div>
<br />
<div>
<input type="checkbox" id="ResponseTypeTokenCheckBox" /> Return access token in url
</div>
<div>your check status : #Model.IsChecked</div>
<br />
<div>your text : #Model.Text </div>
_Layout.cshtml
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>#ViewData["Title"] - WebApplication5</title>
</head>
<body>
#RenderBody()
<script src="~/jquery-2.1.0.min.js"></script>
#RenderSection("Scripts", required: false)
<script type="text/javascript">
$(document).ready(function () {
function fun() {
var current = $("#UseVersionCheckBox").prop("checked");
var current2 = $("#ResponseTypeTokenCheckBox").prop("checked");
alert("values as:" + current + "," + current2);
var json = {};
json.UseVersionChecked = current;
json.ResponseTypeTokenChecked = current2;
var text = JSON.stringify(json);
$.ajax({
type: "POST",
url: "Home/Index",
data: text,
dataType: 'json',
contentType: 'application/json; charset=utf-8',
error: function (r, s, e) {
},
success: function (r) {
},
complete: function () {
}
});
}
$("#UseVersionCheckBox").click(fun);
$("#ResponseTypeTokenCheckBox").click(fun);
});
</script>
</body>
</html>
HomeController.cs
public class HomeController : Controller
{
public HomeController()
{
}
public IActionResult Index()
{
HomeModel model;
if (TempData.ContainsKey("model"))
{
var newmodel = JsonConvert.DeserializeObject<HomeModel>(TempData["model"].ToString());
model = newmodel;
}
else
{
model = new HomeModel();
model.IsChecked = false;
model.Text = "not checked";
}
ModelState.Clear();
return View(model);
}
[HttpPost]
public IActionResult Index([FromBody] CheckStatus status)
{
HomeModel model = new HomeModel();
model.IsChecked = true;
model.Text = "UseVersionCheckBox : " + status.UseVersionChecked + " ; ResponseTypeTokenCheckbox : " + status.ResponseTypeTokenChecked;
if (TempData.ContainsKey("model"))
TempData.Remove("model");
TempData.Add("model", JsonConvert.SerializeObject(model));
ModelState.Clear();
return RedirectToAction("Index", "Home");
}
}
[Serializable]
public class HomeModel
{
public bool IsChecked { get; set; }
public string Text { get; set; }
}
public class CheckStatus
{
public bool UseVersionChecked { get; set; }
public bool ResponseTypeTokenChecked { get; set; }
}
weird thing , after checked the response of redirect to GET action, the new value is there ,but web page in browser still show old. why ?
I want to pass selected Drop down list value to Ajax Action Link which is I am using in Controller. Every time When I will change drop down list value. I want that respective value pass to the action link.
What I need to write here in Ajax Action Link ????
Drop Down List
<div class="form-group">
#Html.DropDownListFor(model => model.ComponentId, ((List<string>)ViewBag.Cdll).Select(model => new SelectListItem { Text = model, Value = model }), " -----Select Id----- ", new { onchange = "Action(this.value);", #class = "form-control" })
</div>
Ajax Action Link
<div data-toggle="collapse">
#Ajax.ActionLink("Accessory List", "_AccessoryList", new { ComponentId = ???? }, new AjaxOptions()
{
HttpMethod = "GET",
UpdateTargetId = "divacc",
InsertionMode = InsertionMode.Replace
})
</div>
Controller
public PartialViewResult _AccessoryList(string ComponentId)
{
List<ComponentModule> li = new List<ComponentModule>();
// Code
return PartialView("_AccessoryList", li);
}
Here is a new post. I do dropdowns a little different than you, so I am showing you how I do it. When you ask what to pass, I am showing you how to pass the dropdown for 'component' being passed. I also show how to pass from ajax back to the page.
Controller/Model:
//You can put this in a model folder
public class ViewModel
{
public ViewModel()
{
ComponentList = new List<SelectListItem>();
SelectListItem sli = new SelectListItem { Text = "component1", Value = "1" };
SelectListItem sli2 = new SelectListItem { Text = "component2", Value = "2" };
ComponentList.Add(sli);
ComponentList.Add(sli2);
}
public List<SelectListItem> ComponentList { get; set; }
public int ComponentId { get; set; }
}
public class PassDDLView
{
public string ddlValue { get; set; }
}
public class HomeController : Controller
{
[HttpPost]
public ActionResult PostDDL(PassDDLView passDDLView)
{
//put a breakpoint here to see the ddl value in passDDLView
ViewModel vm = new ViewModel();
return Json(new
{
Component = "AComponent"
}
, #"application/json");
}
public ActionResult IndexValid8()
{
ViewModel vm = new ViewModel();
return View(vm);
}
View:
#model Testy20161006.Controllers.ViewModel
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>IndexValid8</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script type="text/javascript">
$(function () {
$("#btnClick").click(function () {
var PassDDLView = { ddlValue: $("#passThis").val() };
$.ajax({
url: '#Url.Action("PostDDL")',
type: 'POST',
data: PassDDLView,
success: function (result) {
alert(result.Component);
},
error: function (result) {
alert('Error');
}
});
})
})
</script>
</head>
<body>
<div class="form-group">
#Html.DropDownListFor(m => m.ComponentId,
new SelectList(Model.ComponentList, "Value", "Text"), new { id = "passThis" })
<input type="button" id="btnClick" value="submitToAjax" />
</div>
</body>
</html>
Goal: I am attempting to populate a table based on a dropdown list using Razor syntax to populate my table.
Summary: I am passing the model into my View and looping thru each object within my model. I am able to see the objects populated within the model when debugging the View, however, when the page actually displays, There is nothing in the table and the only thing that is displaying is the dropdown.
Question: What may be the problem with the page rendering?
My view is as follows:
#model IEnumerable<FantasySportsMVC.Models.PlayerDetails>
#{
ViewBag.Title = "Position";
}
<h2>Position</h2>
<body>
<div>
#Html.DropDownList("ddlTournaments",(IEnumerable<SelectListItem>)ViewBag.Tournaments, new { id="ddlTournament", name="ddlTournament"})
</div>
<div>
<input type="button" id="btnGetData" value="Show me some stuff, Yo!" />
</div>
<div id="results">
</div>
<table id="tbDetails">
#if(Model != null)
{
<tbody>
#foreach (var player in Model)
{
<tr>
<td>#player.LastName</td>
<td>#player.FirstName</td>
<td>#player.Position</td>
</tr>
}
</tbody>
}
</table>
</body>
<script type="text/javascript">
function SendTournamentId() {
var data = JSON.stringify({ id : $("#ddlTournament option:selected").val()});
$.ajax({
url: '/Leaderboard/Position',
type: 'POST',
dataType: 'json',
data: data,
contentType: 'application/json; charset=utf-8',
success: function (result) {
//return JSON.stringify($("#ddlTournament option:selected").val());
$("#ddlTournament option:selected").val(result.d.id);
}
});
}
$(function () {
$('#btnGetData').click(SendTournamentId);
});
</script>
My Controller is as follows:
public class LeaderboardController : Controller
{
public ActionResult Position()
{
ViewBag.Tournaments = GetTournamentDetailsSelectList();
return View();
}
[HttpPost]
public ActionResult Position(string id)
{
ViewBag.Tournaments = GetTournamentDetailsSelectList();
var tournamentId = id;
var url = ConstructLeaderboardUrl(tournamentId);
var xmlToJsonUrl = ConvertXmltoJson(url);
List<PlayerDetails> details = BindDataTablePlayerDetails(xmlToJsonUrl);
return View(details);
}
}
private static List<PlayerDetails> BindDataTablePlayerDetails(string url)
{
dtAttributeList = new DataTable();
var details = new List<PlayerDetails>();
try
{
//ConvertXmltoJson(url);
// Construct Datatable
dtAttributeList.Columns.Add("Last Name", typeof(string));
dtAttributeList.Columns.Add("First Name", typeof(string));
dtAttributeList.Columns.Add("Position", typeof(string));
// Add rows to Datatable from Json
for (int i = 0; i < doc.GetElementsByTagName("player").Count; i++)
{
dtAttributeList.Rows.Add(
doc.GetElementsByTagName("player").Item(i).Attributes["last_name"].Value,
doc.GetElementsByTagName("player").Item(i).Attributes["first_name"].Value,
doc.GetElementsByTagName("player").Item(i).Attributes["position"].Value);
}
// Add rows from Datatable to PlayerDetails
foreach (DataRow row in dtAttributeList.Rows)
{
var player = new PlayerDetails();
player.LastName = row["Last Name"].ToString();
player.FirstName = row["First Name"].ToString();
player.Position = row["Position"].ToString();
details.Add(player);
}
}
catch (Exception e)
{
throw new Exception();
}
return details;
}
I have some code which displays a dropbox with a list of entries from a database and calls a controller action on the change event. The controller takes the selected entry as a string and returns a new view (I think herein lies my issue), the trouble is I think that the old view still remains as the newly returned view is never displayed.
Do I need to redesign this or if not, should I be forcibly destroying any old view?
My code is as follows:
EditSchool view:
#model namespace.Models.SchoolDetails
#{
ViewBag.Title = "EditSchool";
Layout = "~/Views/AuthorisedAdmin/_LayoutAdmin.cshtml";
}
<script src="#Url.Content("~/Scripts/chosen/chosen.jquery.min.js")" type="text/javascript"></script>
<script src="#Url.Content("~/Scripts/bubble-popup-chosen-upload-functions.js")" type="text/javascript"></script>
<script src="#Url.Content("~/Scripts/jquery.validate.min.js")" type="text/javascript"></script>
<script src="#Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script>
<script language="javascript" type="text/javascript">
$(document).ready(function () {
$("#School").change(function () {
var SelectedSchool = $('#School').val();
$.ajax({
url: '/AuthorisedAdmin/RetrieveSchool'
, type: 'POST'
, data: { School: SelectedSchool }
, success: function (data) {
}
, error: function (request, textStatus, errorThrown) {
alert(errorThrown.toString());
}
, complete: function (request, textStatus) {
}
});
});
});
</script>
<fieldset>
<legend>Select School</legend>
<div class="editor-field">
#Html.DropDownList("School", ViewBag.RegisteredSchools as SelectList, namespace.Models.Helpers.LanguageSchoolsConstants.m_sDropdownDisplayText,
new
{
id = "School",
#class = "chosen",
})
</div>
</fieldset>
#{
if (null != Model)
{
#Html.Partial("Partial/EditSchoolPartial", Model)
}
else
{
#Html.Partial("Partial/NoSchoolSelected")
}
}
Note that the partial view (EditSchoolPartial) is probably not a concern here, so I'm not posting the code.
Controller methods of interest:
EditSchool action:
public ActionResult EditSchool()
{
List<string>kRegisteredSchools = DBHelperFunctionsSchool.Instance().GetRegisteredSchoolsNamesOnly();
ViewBag.RegisteredSchools = new SelectList(kRegisteredSchools, "Name");
SchoolDetails schoolDetails = null;//DBHelperFunctionsSchool.Instance().GetSchoolDetailsForName(kRegisteredSchools.FirstOrDefault());
return View(schoolDetails);
}
RetrieveSchool action (called by AJAX):
[HttpPost]
public ActionResult RetrieveSchool(string School)
{
SchoolDetails schoolDetails = null;
List<string> kRegisteredSchools = DBHelperFunctionsSchool.Instance().GetRegisteredSchoolsNamesOnly();
ViewBag.RegisteredSchools = new SelectList(kRegisteredSchools, "Name");
try
{
schoolDetails = new SchoolDetails();
schoolDetails.School = DBHelperFunctionsSchool.Instance().GetSchoolForName(School);
DBHelperFunctionsSchool.Instance().PopulateSchoolDetailsSuppData(schoolDetails);
schoolDetails.ActionNameToExecuteOnFormSubmit = "EditSchoolDetails";
schoolDetails.ControllerNameToExecuteOnFormSubmit = "AuthorisedAdmin";
}
catch
{
schoolDetails = null;
}
finally
{
}
return View("EditSchool", schoolDetails);
}
Instead of doing ajax on onchange ,do below
$("#School").change(function () {
var SelectedSchool = $('#School').val();
window.location='/AuthorisedAdmin/RetrieveSchool?School='+SelectedSchool;
});
Note:You may have to give full path url instead of relative url.
HI all i have some images which i am retrieving dynamically and displaying in a view like this
here is my controller
private ProductEntities products = new ProductEntities();
public List<ProductItems> GetAllProducts()
{
var items = new List<ProductItems>();
var records = products.Products.ToList();
foreach (var item in records)
{
ProductItems model = new ProductItems();
model.ProductID = item.ProductId;
model.ProductName = item.ProductName;
model.ImageURL = item.ImageURL;
items.Add(model);
}
return items;
}
and this is my index page view
<script type="text/javascript">
$(document).ready(function () {
$.getJSON("/api/ProductDetails", function (data) {
$.each(data, function (idx, ele) {
$("<img/>").attr({ src: ele.ImageURL }).appendTo("#makeMeScrollable");
$("#makeMeScrollable").append('<h4>' + ele.ProductName + '</h4>');
});
});
});
</script>
</head>
<body>
<h1>Products</h1>
<div class="rightsection_main">
<div class="img_main" id="makeMeScrollable">
</div>
</div>
</body>
now what i want is when ever an user clicks on a image i have to pass the ID of the image to my method in my apicontroller and i have to display that image in another view ..how do i pass my image to another view and Id to my api/controller action
i have to pass my ProductID to this method
public IEnumerable<ProductItems> ProductDeatils(long ProductID)
{
var productdeatils = products.ExecuteStoreQuery<ProductItems>("GetProductDetail #ProductID ", new SqlParameter("#ProductID", ProductID));
return productdeatils ;
}
The thing is that API actions do not return views. They are used to serialize models using some format such as JSON or XML. So when you are saying that you want to use the ProductDeatils API action to display a view, this doesn't make much sense. Views are returned by standard ASP.NET MVC controller actions returning ActionResults. So let's see how to set this up.
Let's suppose that you have the following API controllers:
public class ProductsController : ApiController
{
private ProductEntities products = new ProductEntities();
public IEnumerable<ProductItems> Get()
{
return products.Products.ToList().Select(item => new ProductItems
{
ProductID = item.ProductId,
ProductName = item.ProductName,
ImageURL = item.ImageURL
});
}
}
public class ProductDetailsController : ApiController
{
private ProductEntities products = new ProductEntities();
public ProductItems Get(long id)
{
return products.ExecuteStoreQuery<ProductItems>(
"GetProductDetail #ProductID ",
new SqlParameter("#ProductID", id)
);
}
}
Alright, now we will need standard ASP.NET MVC controller that will serve the views:
public class HomeController : Controller
{
public ActionResult Products()
{
return View();
}
public ActionResult ProductDetail(long id)
{
using (var client = new HttpClient())
{
var productDetailUrl = Url.RouteUrl(
"DefaultApi",
new { httproute = "", controller = "productdetails", id = id },
Request.Url.Scheme
);
var model = client
.GetAsync(productDetailUrl)
.Result
.Content
.ReadAsAsync<ProductItems>()
.Result;
return View(model);
}
}
}
and the respective view for showing the list of products and the detail of a product when a link is clicked:
~/Views/Home/Products.cshtml:
#{
Layout = null;
}
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>Index</title>
</head>
<body>
<h1>Products</h1>
<div class="rightsection_main">
<div class="img_main" id="makeMeScrollable">
</div>
</div>
<script type="text/javascript" src="~/scripts/jquery-1.8.2.js"></script>
<script type="text/javascript">
var productsUrl = '#Url.RouteUrl("DefaultApi", new { httproute = "", controller = "products" })';
var productDetailUrl = '#Url.Action("productdetail", "home", new { id = "__id__" })';
$.getJSON(productsUrl, function (data) {
$.each(data, function (idx, product) {
$('<img/>').attr({ src: product.ImageURL }).appendTo('#makeMeScrollable');
$('#makeMeScrollable').append(
$('<h4/>').html(
$('<a/>', {
href: productDetailUrl.replace('__id__', product.ProductID),
text: product.ProductName
})
)
);
});
});
</script>
</body>
</html>
and ~/Views/Home/ProductDetail.cshtml:
#model ProductItems
#{
Layout = null;
}
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>ProductDetail</title>
</head>
<body>
<h4>#Html.DisplayFor(x => x.ProductName)</h4>
<img src="#Model.ImageURL">
</body>
</html>