在ASP.NET MVC中通过jQuery提交表单时传递参数

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<% Html.BeginForm("AddComment", "Home", new { ThreadId = Model.Id },
   FormMethod.Post, new { @id = "AddComment" + Model.Id.ToString(),
   @onsubmit = "javascript:AddComment(this);return false" }); %>
<%: Html.TextBox("CommentText", "", new { @class = "comment-textbox" })%>
<input id="Comment" type="submit" name="submitButton" value="Post Comment" />   
<% Html.EndForm(); %>

JavaScript

    AddComment = function (sender) {
    var form = $(sender);
    var data = form.serialize();
    $.ajax({
        type: "POST",
        url: "/Home/AddComment",
        data: data,
        dataType: "html",
        success: function (response) {
            alert(response);
        },
        error: function (error) {
            alert(error);
        }
    });
    return false;
};

    [HttpPost]
        public ActionResult AddComment(string submitButton, Comment comment)
        {
            comment.CreatedDate = DateTime.Now;
            comment.PosterId = LoggedInUser.Id;

            _repository.AddComment(comment);
            _repository.Save();

            if (Request.IsAjaxRequest())
            {
                return View("Comment", comment);
            }
            else
                return RedirectToAction("Index");
        }