Javascript MVC5控制器未接收JSON对象

我有一个控制器，其方法如下：

public JsonResult Save(List<BlogInfo> list)
{
    return Json(new { Data = "" }, JsonRequestBehavior.AllowGet);
}

$.ajax({
    url: "Home/Save",
    type: "post",
    contentType: "application/json",
    data: ko.mapping.toJSON(ViewModel),
    success: function (response) {
        alert(response.Status);
    }
});

{"Data":[{"Id":1,"Title":"Sudoku Solver","Description":"Programmed Sudoku Solver","Tags":["programming","sudoku"]},{"Id":2,"Title":"Picnic","Description":"Went to millpoint","Tags":["picnic"]},{"Id":0,"Title":"Title","Description":"Description","Tags":[]}]}

我的问题是控制器的列表参数总是空的。我尝试将其更改为字符串而不是列表，但它也是空的

使用Fiddler，我可以看到JSON的传递过程如下：

public JsonResult Save(List<BlogInfo> list)
{
    return Json(new { Data = "" }, JsonRequestBehavior.AllowGet);
}

$.ajax({
    url: "Home/Save",
    type: "post",
    contentType: "application/json",
    data: ko.mapping.toJSON(ViewModel),
    success: function (response) {
        alert(response.Status);
    }
});

{"Data":[{"Id":1,"Title":"Sudoku Solver","Description":"Programmed Sudoku Solver","Tags":["programming","sudoku"]},{"Id":2,"Title":"Picnic","Description":"Went to millpoint","Tags":["picnic"]},{"Id":0,"Title":"Title","Description":"Description","Tags":[]}]}

---

您显示的JSON并不表示数组，因此您不可能期望将其绑定到服务器上的列表。要实现这一点，请确保从客户端发送对象数组：

data: ko.mapping.toJSON(ViewModel.Data);

这里我们使用表示数组的

ViewModel.Data

属性，这样我们只发送所需的JSON：

[{"Id":1,"Title":"Sudoku Solver","Description":"Programmed Sudoku Solver","Tags":["programming","sudoku"]},{"Id":2,"Title":"Picnic","Description":‌​"Went to millpoint","Tags":["picnic"]},{"Id":0,"Title":"Title","Description":"Description‌​","Tags":[]}]

---

请发布如何查看您的

数据
ko.mapping.toJSON（ViewModel）
生成了什么？这是我用Fiddler得到的：
{“数据”：[{“Id”：1，“Title”：“数独解算器”，“Description”：“已编程数独解算器”，“Tags”：[“programming”，“Sudoku”]}，{“Id”：2，“Title”：“野餐”，“Description”：“God to millpoint”，“Tags”：[“野餐”}，{“Id”：0，“Title”：“Title”，“Description”：“Title”，“Description”：“，[]}