How to submit disabled input in ASP.NET MVC

In ASP.NET MVC, if you have a disabled input element on a form and you want to submit its value to the server when the form is submitted, you can achieve this by either enabling the input field just before the form is submitted or by using hidden fields to store the value of the disabled input. Here's how you can do both methods:

Method 1: Enable the Input Before Form Submission

In this method, you temporarily enable the input field just before the form is submitted. Here's an example:

1. Create your form in your Razor view:

@using (Html.BeginForm("SubmitAction", "ControllerName", FormMethod.Post, new { id = "myForm" }))
{
    @Html.TextBoxFor(model => model.DisabledValue, new { @disabled = "disabled", id = "disabledInput" })
    <button type="submit">Submit</button>
}

2. Add JavaScript to enable the input field before form submission:

    $(document).ready(function () {
        $("#myForm").submit(function () {
            // Enable the disabled input field just before submission
            $("#disabledInput").prop("disabled", false);
        });
    });

3. In your controller, create an action to handle the form submission:

[HttpPost]
public ActionResult SubmitAction(YourModel model)
{
    // Process the form data, including the value of the previously disabled input
    // ...
    return View(model);
}

Method 2: Use a Hidden Field

In this method, you use a hidden input field to store the value of the disabled input. The hidden field will have the same name as the disabled input, ensuring that the value is submitted with the form.

1. Modify your Razor view to include a hidden input field:

@using (Html.BeginForm("SubmitAction", "ControllerName", FormMethod.Post))
{
    @Html.HiddenFor(model => model.DisabledValue) // Add a hidden field with the same name
    @Html.TextBoxFor(model => model.DisabledValue, new { @disabled = "disabled" })
    <button type="submit">Submit</button>
}

2. In your controller, create an action to handle the form submission:

[HttpPost]
public ActionResult SubmitAction(YourModel model)
{
    // Access the value of the hidden field, which will contain the value of the disabled input
    var disabledValue = model.DisabledValue;
    
    // Process the form data, including the value of the hidden field
    // ...
    
    return View(model);
}

Using either of these methods, you can ensure that the value of the disabled input is submitted with the form, even though it is disabled.