我想使用$ .POST或$ .AJAX实现创建（插入）屏幕。

注意：代码无需AJAX调用即可正常工作..它已经存在..现在我需要进行ajax调用并保存而无需回发。我写了下面的代码：

在提交点击事件时，代码如下：

$.ajax(
      {
          url: '@Url.Action("CreateProduct","ProductManagement")',
          dataType: 'json',
          contentType: 'application/json; charset=utf-8',
          type: 'post',
          data:   $('frm').serialize(),
          success: function () { alert('s'); },
          error: function (e1, e2, e3) { alert(e2); alert(e1 + ' ' + e2 + ' ' + e3); alert('failure event'); }
      }
    );
});

在服务器端：

[HttpPost]
public JsonResult CreateProduct(FormCollection frm)
{
    manager.ProductManager m = new manager.ProductManager();
    // m.InsertProduct(new common.DTO.ProductDTO() { Id = id, ProductName = ProductName, Description = Description, Cost = cost, ProductTypeId = 5 });
    return Json("'result':'success'", JsonRequestBehavior.AllowGet);
}

问题是，每次它都会调用操作，但在frm参数param 上找不到数据。我也试图保持-视图模型ProductViewModel vm作为参数，但是它没有用..只是给了我null值。同样，在ajax调用中，它成功但是。唯一的问题是控制器的动作上没有任何内容。

HTML如下：

  @using (Html.BeginForm("CreateProduct", "ProductManagement", FormMethod.Post, new { id = "frm" }))
    {
@Html.AntiForgeryToken()
@Html.ValidationSummary(true)

<fieldset>
    <legend>ProductViewModel</legend>
    <div id="CreateDiv">
        <div class="editor-label">
            @Html.LabelFor(model => model.ProductName)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.ProductName)
            @Html.ValidationMessageFor(model => model.ProductName)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.Cost)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.Cost)
            @Html.ValidationMessageFor(model => model.Cost)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.Description)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.Description)
            @Html.ValidationMessageFor(model => model.Description)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.ProductTypeId)
        </div>
        <div class="editor-field">
            @Html.DropDownList("ProductTypeId", "Choose item")
            @Html.ValidationMessageFor(model => model.ProductTypeId)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.ProductTypeName)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.ProductTypeName)
            @Html.ValidationMessageFor(model => model.ProductTypeName)
        </div>
    </div>
    <p>
        <input type="submit" value="Create" id="btnSubmit" />
    </p>

</fieldset>
 }

 <div>
 @Html.ActionLink("Back to List", "Index")
 </div>

请指导我这里出了什么问题。

谢谢