Question

我创建了一个用于创建，编辑和删除数据库中BOM的应用。

当我尝试更改项目编号时，它将使数据库中的项目编号字段为空，并且如果我更改了项目的数量，则也使项目编号字段为空，但它将提交数量更改。 / p>

您的帮助将不胜感激。我的代码如下：

这是我用于编辑的Controller代码：

// GET: RovingHeaders/Edit/5
        public async Task<IActionResult> Edit(string id)
        {
            if (id == null)
            {
                return NotFound();
            }

            var rovingHeader = await _context.RovingHeader
                .Include(s => s.RovingLine)
                .FirstOrDefaultAsync(m => m.RovingNo == id);


            if (rovingHeader == null)
            {
                return NotFound();
            }
            return View(rovingHeader);
        }

        // POST: RovingHeaders/Edit/5
        // To protect from overposting attacks, please enable the specific properties you want to bind to, for 
        // more details see http://go.microsoft.com/fwlink/?LinkId=317598.
        [HttpPost]
        [ValidateAntiForgeryToken]
        public async Task<IActionResult> Edit(string id, [Bind("RovingNo,Description,ModDate")] RovingHeader rovingHeader, [Bind("RovingNo,ItemNo,Qty,RowId")] RovingLine rovingLine)
        {
            if (id != rovingHeader.RovingNo)
            {
                return NotFound();
            }

            if (ModelState.IsValid)
            {
                try
                {
                    _context.Update(rovingHeader);
                    _context.Update(rovingLine);



                    await _context.SaveChangesAsync();
                }
                catch (DbUpdateConcurrencyException)
                {
                    if (!RovingHeaderExists(rovingHeader.RovingNo))
                    {
                        return NotFound();
                    }
                    else
                    {
                        throw;
                    }
                }
                return RedirectToAction(nameof(Index));
            }
            return View(rovingHeader);
        }

非常感谢您的帮助！我的JSON文件

Logging": {
    "LogLevel": {
      "Default": "Warning"
    }
  },
  "AllowedHosts": "*",
  "ConnectionStrings": {
    "SPECContext": "Server=(localdb)\\mssqllocaldb;Database=SPECContext-0afacde4-1953-4537-8410-5d670f37debc;Trusted_Connection=True;MultipleActiveResultSets=true",
    "MONTEREYContext": "Server=(localdb)\\mssqllocaldb;Database=MONTEREYContext-0afacde4-1953-4537-8410-5d670f37debc;Trusted_Connection=True;MultipleActiveResultSets=true"
  }

}

我的UI文件Edit.CSHTML

@model Spec5.Models.RovingHeader
@{
    ViewData["Title"] = "Edit";
}
<h1>Edit</h1>
<h4></h4>
<hr />
<div class="row">
    <div class="col-md-4">
        <form asp-action="Edit">
            <div asp-validation-summary="ModelOnly" class="text-danger"></div>
            <input type="hidden" asp-for="RovingNo" />
            <div class="form-group">
                <label asp-for="Description" class="control-label"></label>
                <input asp-for="Description" class="form-control" />
                <span asp-validation-for="Description" class="text-danger"></span>
            </div>
            <div class="form-group">
                <label asp-for="ModDate" class="control-label"></label>
                <input asp-for="ModDate" class="form-control" />
                <span asp-validation-for="ModDate" class="text-danger"></span>
            </div>
            <div class="form-group">
                    <table class="table">
                        <tr>
                            <th></th>
                            <th>Item</th>
                            <th>QTY</th>
                        </tr>
                        <tr>                            
                                @foreach (var item in Model.RovingLine)
                                {
                                 <tr>
                                 <td>
                                     <input type="hidden" name="Roving Number" value="@item.RovingNo" />
                                 </td>
                                 <td>
                                    <input type="text" name="Part Number" value="@item.ItemNo" />
                                 </td>
                                 <td>
                                    <input type="text" name="Qty" value="@item.Qty" />
                                 </td>
                                 <td>
                                    <input type="hidden" name="RowId" value="@item.RowId" />
                                 </td>
                                 </tr>
                                }                            
                       </tr>
                    </table>           
            </div>
                <div class="form-group">
                    <input type="submit" value="Save" class="btn btn-primary" />                    
                </div>
        </form>
    </div>
</div>

<div>
    <a asp-action="Index">Back to List</a>
</div>

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

Answer 1

我知道了。问题是名字。

<td>
                                    <input type="text" name="Part Number" value="@item.ItemNo" />
                                 </td>

名称必须与Model相同。我将名称从name =“ Part Number”更改为name =“ ItemNo”，一切正常。

谢谢

编辑在我的ASP.NET Core MVC项目上无法正常工作

1 个答案: