Question

I would like to try to assign a variable value to input hidden field in my MVC form. I thought I could do it this way but the values of variables are not being put to the hidden fields.
Any thoughts why this is a wrong way?

note: there is some code in between the variables declaration … I just wanted to make things simple to read. The particular line of code that bugs me is: @value = @secondNumber

@{
    ViewBag.Title = "Jakub Holovsky - Contact";

    Random randomNumber = new Random();
    int firstNumber = randomNumber.Next(0, 11);
    int secondNumber = randomNumber.Next(0, 11);
    int sumNumber = firstNumber + secondNumber;
}

<div class="divLeftSide">
                        <span>How much is @firstNumber + @secondNumber:</span>
                        @Html.TextBoxFor(m => m.FirstNumber, new { @type = "number", @id = "firstNumber", @class = "HiddenField", @value = @firstNumber })
                        @Html.TextBoxFor(m => m.SecondNumber, new { @type = "number", @id = "secondNumber", @class = "HiddenField", @value = @secondNumber })
                    </div>

Answer 1

1) Create a class named SomeModel for your model. The class should contain the properties named FirstNumber and SecondNumber.

2) Add the line

@model SomeModel

to your view.

3) Move

Random randomNumber = new Random();
int firstNumber = randomNumber.Next(0, 11);
int secondNumber = randomNumber.Next(0, 11);
int sumNumber = firstNumber + secondNumber;

into your controller’s action.

4) In your controller’s action, initialize a new instance of SomeModel named model and set the FirstNumber to firstNumber and SecondNumber to secondNumber

5) Pass the model to your view by calling return View(model);

6) Remove the @value = @firstNumber and @value = @secondNumber from your view.