使用ASP MVC将范围数据绑定到数据库，使用Model Binder

Question

I'm new in Asp.net MVC

I need some suggestions for how to make a counter then give the value of it to model binder.

I have two modal Pages.in the first one I have this counter for users to choose the number of their request it's like this : when user click on plus icon the number changed By Javascript

when user click on next button , the next modal page shows, which I have selecteddate and number of travelers there by javascript. and also a form which I want model binder to make an object of it.

here is the view of my next modal page in summary

<p>
 <span  id="selecteddate"></span>


  <span id="selectedcount"></span>


  <span id="selectedprice"></span>
</p>

and here is javascript :

$(".nextbtn").click(function () {

$("#selecteddate").html("Selected Date is : "+$("#showdate").html());
$("#selectedprice").html("Total Price is : " + $("#tpriceforall").html());
$("#selectedcount").html($("#shownum").html());
 });

and it works correctly.

and also I have a Form in this next modal page too . I want to pass input data of users to data base + the number which is available in span #selectedcount that java script set it each time .

as I want to use ModelBinder , there is an input which it would be hidden. but just to pass data . here is the input for TravelersCount of my Request Model

<div class="form-group">
@Html.LabelFor(model => model.Request.TravelersCount, htmlAttributes: new {@class = "control-label col-md-2" })
 <div class="col-md-10">
   @Html.EditorFor(model => model.Request.TravelersCount, new { htmlAttributes = new { @class = "form-control", @*@Value=?????*@ } })
@Html.ValidationMessageFor(model => model.Request.TravelersCount, "", new { @class = "text-danger" })
 </div>
</div>

What Should I write for Value in the EditorFor ?

Or if this way is completely irregular please suggest me new one. Really appreciate you'r help. thanks

Answer 1

Your EditorFor() method creates an input with id="Request_TravelersCount" .

To update its value when the button is clicked, you can use

$(".nextbtn").click(function () {
    $("#selecteddate").html("Selected Date is : "+$("#showdate").html());
    $("#selectedprice").html("Total Price is : " + $("#tpriceforall").html());
    var num = $("#shownum").html();
    $("#selectedcount").html(num);
    $('#Request_TravelersCount').val(num);
});

Side note: You should not attempt to set the value attribute in a HtmlHelper method (the method will set the correct value taking into account ModelState values)