Question

所以我有这个视图应该返回一个名字和两个日期，但日期似乎总是为空。

我将一个警告绑定到创建按钮以查看js将从输入字段读取的日期，并且它总是正确的，但是当返回到post操作时，该对象在StartedOn和FinishedOn上始终具有空值（如果它们是约会？如果不是它给了我01/01/2001作为日期，当我尝试将其保存在数据库中时它抛出异常＆＃34;将datetime2数据类型转换为日期时间数据类型导致了范围值＆＃34;）。

我的问题是，如果可以为空，为什么它总是返回null;如果没有，为什么它会返回01/01/2001？如何修复它？

我的观点：

@model Data.Project

@{
    ViewBag.Title = "Create";
    Layout = "~/Views/Shared/_Layout.cshtml";
}

<h2>Create</h2>


@using (Html.BeginForm()) 
{
    @Html.AntiForgeryToken()

    <div class="form-horizontal">
        <h4>Project</h4>
        <hr />
        @Html.ValidationSummary(true, "", new { @class = "text-danger" })
        <div class="form-group">
            @Html.LabelFor(model => model.Name, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.Name, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.Name, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.StartedOn, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.StartedOn, new { htmlAttributes = new {@class = "form-control",type="date" } })
                @Html.ValidationMessageFor(model => model.StartedOn, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.FinishedOn, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.FinishedOn, new { htmlAttributes = new {@class = "form-control" , type = "date" } })
                @Html.ValidationMessageFor(model => model.FinishedOn, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            <div class="col-md-offset-2 col-md-10">
                <input type="submit" value="Create" class="btn btn-default" id="11" />
            </div>
        </div>
    </div>
}

<div>
    @Html.ActionLink("Back to List", "Index")
</div>
@section scripts{
    <script>
        $(function () {
            $("#11").on("click",function() {
                alert($("#StartedOn").val());
            })
        })
    </script>
}

我的行动（此处的日期为全部为空）

        [HttpPost]
        [ValidateAntiForgeryToken]
        public ActionResult Create([Bind(Include = "Id,Name")] Project project)
        {
            if (ModelState.IsValid)
            {

                UtilityContext.AddProject(project);
                UtilityContext.SaveChanges();
                return RedirectToAction("Index");
            }

            return View(project);
        }

我的模特：

 public class Project
    {
        [Key]
        public int Id { get; set; }
        [Required]
        public string Name { get; set; }

        public DateTime? StartedOn { get; set; }

        public DateTime? FinishedOn { get; set; }

        [ForeignKey("ProjectId")]
        public virtual ICollection<Employee> EmployeesOnIt { get; set; }
    }

Answer 1

对象在StartedOn和FinishedOn上始终具有空值

因为你告诉它不来绑定这些值：

[Bind(Include = "Id,Name")] Project project

也许你应该绑定它们：

[Bind(Include = "Id,Name,StartedOn,FinishedOn")] Project project

我的类型日期输入始终返回null到对象

1 个答案: