c# - ASP.Net MVC，使用 JQuery.Ajax 提交表单

Question

我想使用 JQuery Ajax 提交表单 (Html.BeginForm())。根据this question ，它应该工作!我不明白为什么 SendEmail() 操作中的参数“email”没有从 js 中获取值。你能帮帮我吗？

我的看法:

<% using (Html.BeginForm("SendEmail", null, FormMethod.Post, new { @class = "form", @id = "formSendMail" }))
{ %>
<fieldset>
    <ul>
        <li>
            <label for="MailFrom">
                De...</label>
            <%= Html.TextBox("MailFrom", Session["email"].ToString(), new { @id = "MailFrom", @Name = "MailFrom", @readonly = "readonly" })%>
        </li>
        <li>
            <label for="MailTo">
                A...</label>
            <%= Html.TextBoxFor(m => Model.Agent.Email, new { @id = "MailTo", @Name = "MailTo" })%>
        </li>
        <li>
            <label for="MailSubject">
                Objet :</label>
            <%= Html.TextBoxFor(m => Model.MailSubject, new { @id = "MailSubject", @Name = "MailSubject" })%>
        </li>
        <li>
            <label>&nbsp;</label>
            <%= Html.TextArea("MailBody", Model.MailBody, 5, 10, null)%>
        </li>
    </ul>
</fieldset>
<% } %>

我的 Controller :

[HttpPost]
public ActionResult SendEmail(Email email)
{
    if (email != null)
    {
        if (!string.IsNullOrEmpty(email.MailBody) & !string.IsNullOrEmpty(email.Subject) & !string.IsNullOrEmpty(email.To))
        {
            using (IEmailDal emailDal = new EmailDal())
            {
                emailDal.SendEmail(email);
            }

            return Json("Email envoyé", JsonRequestBehavior.AllowGet);
        }
        else
            return Json("Error");
    }
    else
        return Json("Error");
}

我的电子邮件类:

public class Email
{
    public string From { get; set; }
    public string To { get; set; }
    public string Subject { get; set; }
    public string MailBody { get; set; }
}

为了提交我的表单，我通过 jquery.dialog 中的按钮模拟提交操作:

$("#mail-form").dialog({
    buttons: {
        "Envoyer le mail": function () {
            $("#formSendMail").submit();
        }
    }
});

还有我的javascript:

$('#formSendMail').submit(function (e) {
    var myEmail = {
        From: $('#MailFrom').val(),
        To: $('#MailTo').val(),
        Subject: $('#MailSubject').val(),
        MailBody: $('#MailBody').val()
    };

    $.ajax({
        type: "POST",
        url: '<%= Url.Action("SendEmail", "Messages") %>',
        data: JSON.stringify(myEmail),
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        success: function (result) {
            alert("Mail envoyé.");
        },
        error: function (result) {
            alert("Echec lors de l'envoi du mail.");
        }
    });

    return false;
});

谢谢!

Answer 1

这是答案(感谢 Stephen Muecke):

我只需要删除 contentType: "application/json; charset=utf-8",，然后不需要对数据进行字符串化:

$.ajax({
    type: "POST",
    url: '<%= Url.Action("SendEmail", "Messages") %>',
    data: myEmail,
    dataType: "json",
    success: function (result) {
        alert("Mail envoyé.");
    },
    error: function (result) {
        alert("Echec lors de l'envoi du mail.");
    }
});

现在，为什么它一开始就不起作用，我不知道!