如何将选定的ID传递给SQL数据库？

如何解决如何将选定的ID传递给SQL数据库？

我在项目的最后一部分遇到了麻烦。除了最后一部分，我所有的SQL表列均已填满。我有两个表WorkSchedule和WorkShiftBid。

在WorkShiftBid中，我有WorkShiftBidID，WSBidDateTime，WSBidStatus，WorkScheduleID，StaffID 我将对WorkShiftBidID使用Guid.NewGuid（），对WSBidDatetime使用Datetime.now，为WSBidStatus使用硬编码的“待处理”值，为StaffID使用一个视图包，并且我试图使WorkScheduleID正常工作，但无济于事。

对于WorkSchedule，我试图仅通过使用按钮方法asp-route-id =“ @ item.WorkScheduleID”来获取“ WorkScheduleID”属性，这会将我重定向到“创建”页面，在这里我将选择一个Staff从下拉列表中删除，然后将其保存到我的WorkShiftBid表中，因为它具有“ WorkScheduleID”的外键。

如果有人可以帮助我，这将是有帮助的。谢谢。

控制器代码：

  public IActionResult CreateWorkShift()
            {
                ViewData["StaffID"] = new SelectList(_context.Staff,"StaffID","StaffName");
                return View();
            }
   
    [HttpPost]
    [ValidateAntiForgeryToken]
    public async Task<IActionResult> CreateWorkShift(Guid? id,[Bind("WorkShiftBidID,WSBidDateTime,WSBidStatus,WorkScheduleID,StaffID")] WorkShiftBidModel workShiftBidModel)
    {
        if (id != workShiftBidModel.WorkScheduleID)
        {
            return NotFound();
        }
        if (ModelState.IsValid)
        {
            workShiftBidModel.WSBidDateTime = DateTime.Now;
                workShiftBidModel.WorkShiftBidID = Guid.NewGuid();
                _context.Add(workShiftBidModel);
                await _context.SaveChangesAsync();
                return RedirectToAction(nameof(DisplaySchedule)); 
        } 

        ViewData["StaffID"] = new SelectList(_context.Staff,"StaffName",workShiftBidModel.StaffID);
        return View(workShiftBidModel);
    }

    private bool WorkShiftBidModelExist(Guid id)
    {
        return _context.WorkSchedule.Any(e => e.WorkScheduleID == id);
    }

显示班次页面：

<h1 class="text-center"> Apply Workshifts</h1>
<hr />

<table class="table">
    <thead>
        <tr>
            <th>
                From (DateTime)
            </th>
            <th>
                To (DateTime)
            </th>
            <th>
                Day
            </th>
            <th>
                Status
            </th>
            <th>
                Work Descriptions
            </th>
            <th>
                Branch
            </th>
            <th>
                Manager
            </th>
            <th></th>
        </tr>
    </thead>
    <tbody>
        @foreach (var item in Model)
        {
            <tr>
                <td>
                    @Html.DisplayFor(modelItem => item.WorkScheduleFromDateTime)
                </td>
                <td>
                    @Html.DisplayFor(modelItem => item.WorkScheduleToDateTime)
                </td>
                <td>
                    @Html.DisplayFor(modelItem => item.WorkScheduleFromDateTime.DayOfWeek)
                </td>
                <td>
                    @Html.DisplayFor(modelItem => item.WorkScheduleStatus)
                </td>
                <td>
                    @Html.DisplayFor(modelItem => item.WorkDescriptions.WorkDescriptionName)
                </td>
                <td>
                    @Html.DisplayFor(modelItem => item.Branches.BranchName)
                </td>
                <td>
                    @Html.DisplayFor(modelItem => item.Staff.StaffName)
                </td>
                <td>
                    <form method="post">
                        <input type="submit" class="btn btn-primary btn-block" value="Bid" asp-route-id="@item.WorkScheduleID" asp-action="DisplaySchedule" asp-controller="PartTimer" />
                    </form>
                    <div class="form-group col-md-6">
                        <a asp-action="CreateWorkShift" asp-route-id="@item.WorkScheduleID" class="btn btn-success">Create</a>
                    </div>
                </td>   
            </tr>
        }
    </tbody>
</table>

创建视图页面代码：

<h1>Create</h1>

<h4>Work Shifts</h4>
<hr />
<div class="row">
    <div class="col-md-4">
        <form asp-action="CreateWorkShift">
            <div asp-validation-summary="ModelOnly" class="text-danger"></div>
            <input type="hidden" asp-for="WorkScheduleID"/>
            <div class="form-group">
                <label asp-for="WSBidStatus" class="control-label"></label>
                <input readonly asp-for="WSBidStatus" value="Pending" class="form-control"/>
                <span asp-validation-for="WSBidStatus" class="text-danger"></span>
            </div>
            <div class="form-group">
                <label asp-for="StaffID" class="control-label"></label>
                <select asp-for="StaffID" class="form-control" asp-items="ViewBag.StaffID"></select>
            </div>
            <div class="form-row">
                <div class="form-group col-md-6">
                    <input type="submit" value="Save" class="btn btn-primary btn-block" />
                </div>
                <div class="form-group col-md-6">
                    <a asp-action="ProfilePage" class="btn btn-secondary btn-block"><i class=" fa fa-table"></i>Back to List</a>
                </div>
            </div>
        </form>
    </div>
</div>



@section Scripts {
    @{await Html.RenderPartialAsync("_ValidationScriptsPartial");}
}

解决方法

您是否表示无法在WorkScheduleID中获得public async Task<IActionResult> CreateWorkShift(Guid? id,[Bind("WorkShiftBidID,WSBidDateTime,WSBidStatus,WorkScheduleID,StaffID")] WorkShiftBidModel workShiftBidModel)。如果是，则需要在public IActionResult CreateWorkShift中获得并传递ID。以下是一个演示示例：

public IActionResult CreateWorkShift(int id)
        {
            List<Staff> list = new List<Staff> { new Staff { StaffID = 1,StaffName = "staff1" },new Staff { StaffID = 2,StaffName = "staff2" } };
            ViewData["StaffID"] = new SelectList(list,"StaffID","StaffName");
            WorkShiftBidModel w = new WorkShiftBidModel { WorkScheduleID = id };
            return View(w);
        }

        

结果：