How do I pass data to modal view in ASP.NET MVC

I am having problems passing data to modal view. Either modal view doesn't open at all or reads data from first item every time I open it. The biggest problem I have is that I don't know jQuery. I want a button to open a modal that reads a variable of my item in this case item.Code. Items are in a foreach loop.

This is how i want my code to look.

<div class="row" style="padding: 0px 50px">
@foreach (var item in Model)
{
    <div style="width: 200px; height:200px; border: 1px dotted #fff; text-align:center; display: inline-block">
        <h4>@item.Name</h4>

        <!-- Button to open modal view here for this specific item -->

    </div>
}

I tried it with and without a partial view. This is the code I currently have which just opens a modal window but doesn't show anything else. I know the problem is in id's, but I tried to change all id's to unique ones which caused even more problems.

    @foreach (var item in Model)
{
    <div style="width: 200px; height:200px; border: 1px dotted #fff; text-align:center; display: inline-block">
        <h4>@item.Name</h4>
    </div>
    <input class="btn btn-default" type="button" value="Details" id="@item.id" onclick="Details(this.id);" />


    <div class="modal fade" id="myModal" role="dialog">
        <div class="modal-dialog" role="document">
            <div class="modal-content">
                <div class="modal-header">
                    <h5 class="modal-title" id="exampleModalLabel">Modal title</h5>
                    <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                        <span aria-hidden="true">&times;</span>
                    </button>
                </div>
                <div class="modal-body">
                    @Html.Raw(item.Code);
                </div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
                </div>
            </div>
        </div>
    </div>
}

<script>
    function Details(id) {
        $.get("@Url.Action("preview","Generator")/"+id, function (data) { $('.modal-body').html(data); });
        $('#myModal').modal('show');
    }

    $('#myModal').on('hidden.bs.modal' , function (e) {
        $('.modal-body').html("");
    })
</script>

Thank you!