在ASP Core 2.2中的表上获取和设置数据CheckboxList

时间:2019-04-22 21:45:06

标签: asp.net-mvc asp.net-core parameter-passing checkboxlist

我编写了一个类并设置了公共IActionResult Index():

    public class SuperBowl
    {
        public string Name { get; set; }
        public double Price { get; set; }
        public bool GiftPackage { get; set; }
    }
        [HttpGet]
        public IActionResult Index()
        {
            double[] pricearraying = { 630, 500.25, 385.75 };
            string[] namearraying = { "Red", "Green", "Blue" };
            var heyinitial = new List<SuperBowl>();
            for (int i = 0; i < pricearraying.Length; i++)
            {
                heyinitial.Add(new SuperBowl { Name = namearraying[i], Price = pricearraying[i], GiftPackage = false });
            }
            return View(heyinitial);
        }

[HttpPost]
 public IActionResult Index(List<SuperBowl> ceko)
{
            double[] exposalary = { 63.00, 42.00, 21.00 };
            var choosing = new List<double>();
            foreach (var item in ceko.Select(x=>x.GiftPackage))
            {
                if (item == true)
                {
                    choosing.Add(exposalary[ceko.FindIndex(r=>r.GiftPackage==item)]);
                }
            }
}
return View("MyCheckOut",choosing);
}

这是我的Index.cshtml:

@model List<SuperBowl>
@{
}

<!DOCTYPE html>

<html>
<head>
    <title>Index</title>
</head>
<body>
    <form asp-action="Index" asp-controller="Home" method="post">
        <div class="table-responsive-sm table-hover">
            <table align="center" class="table table-bordered">
                <thead>
                    <tr class="table-light text-center">
                        <th>Item Name</th>
                        <th>My Price</th>
                        <th>Hey Gift</th>
                    </tr>
                </thead>
                <tbody>
                    @foreach (var st in Model)
                    {
                        <tr class="text-center">
                            <td asp-for="@st.Name">@st.Name</td>
                            <td asp-for="@st.Price">@st.Price</td>
                            <td asp-for="@st.GiftPackage">@Html.CheckBoxFor(m => st.GiftPackage)</td>
                        </tr>
                    }
                </tbody>
            </table>
            <input type="submit" value="CheckOut" class="btn btn-primary" />
        </div>
    </form>
</body>
</html>

这是MyCheckOut.cshtml:

@model List<double>
@{
    Layout = null;
}

<!DOCTYPE html>

<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>Hello</title>
</head>
<body>
    <div class="table-responsive-sm table-hover">
        <table align="center" class="table table-bordered">
            <thead>
                <tr class="table-light text-center">
                    <th>Our Discount Numbers</th>
                </tr>
            </thead>
            <tbody>
                @foreach (var discounting in Model)
                {
                    <tr class="text-center">
                        <td>@discounting</td>
                    </tr>
                }
            </tbody>
        </table>
        </div>
</body>
</html>

我的期望是,当我仅勾选索引为0的红色,然后通过相同的索引0时,我们得到数组exposalary [0]为63.00 或当我勾选这些索引分别为0和2的红色和蓝色时,然后通过相同的索引0和2,我们得到数组exposalary [0]和exposalary [2]分别为63和21。

如果我部署了所有这些代码,则在Index.cshtml中,我的表看起来不错,并且当我选择任何复选框提交并在MyCheckOut中发送我的选择时,每个数据都可以,

请帮助我。

1 个答案:

答案 0 :(得分:0)

您的代码中有几个问题,例如页面中的GiftPackage而不是GiftPacage

复杂对象绑定的关键是确保在您的情况下,将方括号中的顺序索引添加到表单字段的name属性中。因此,将您的Index.cshtml修改为:

@for (int i = 0; i < Model.Count; i++)
{
  <tr class="text-center">
      <td asp-for="@Model[i].Name">@Model[i].Name</td>
      <td asp-for="@Model[i].Price">@Model[i].Price</td>
      <td asp-for="@Model[i].GiftPackage">@Html.CheckBoxFor(m => Model[i].GiftPackage)</td>
  </tr>
}

另一个问题是findIndex()方法返回满足提供的测试功能的数组中第一个元素的索引。因此,如果从复选框进行多项选择,您将获得多个相同的值。将您的操作代码更新为:

[HttpPost]
public IActionResult Index(List<SuperBowl> ceko)
{
    double[] exposalary = { 63.00, 42.00, 21.00 };
    var choosing = new List<double>();
    for (int i = 0; i < ceko.Count; i++)
    {
        if (ceko[i].GiftPackage ==true)
        {
            choosing.Add(exposalary[i]);
        }
    }


    return View("MyCheckOut", choosing);
}