Question

我抓住了这个错误并且打了我的脑袋 - 这似乎是一个真实的形式，所以这个错误（以及我无法解决它）让我疯了。

我只是想更新表中的1个字段。正在更新的字段可能为空，也可能不为空。

我在控制器中出错了。 'ilpCareerGoal'对象返回null并导致错误。

控制器：

[Authorize]
    public ActionResult editCareerGoal(int emplID)
    {
        ilpCareerGoal careerGoal = qService.getCareerGoal(emplID);
        return View(careerGoal);
    }

[Authorize]
    [HttpPost]
    public ActionResult editCareerGoal(ilpCareerGoal careerGoal)
    {
        try
        {
            qService.editCareerGoal(careerGoal);
            return RedirectToAction("Index", "Home");
        }
        catch
        {               
            throw;
        }

    }

查看：

@model ILP.Models.ilpCareerGoal

@{
ViewBag.Title = "editCareerGoal";
}

<h2>Edit Your Career Goal</h2>

<script src="@Url.Content("~/Scripts/jquery.validate.min.js")" type="text/javascript"></script>
<script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script>

@using (Html.BeginForm("editCareerGoal", "Home", FormMethod.Post, new { id = "careerGoalForm" }))
{
@Html.ValidationSummary(false)
<fieldset>
    <legend>Career Goal</legend>
    <div class="editor-label">
        @Html.HiddenFor(model => model.emplID)
        Record information here about what you're striving for professionally.
    </div>
    <div class="editor-field">
        @Html.TextAreaFor(model => model.careerGoal, new { cols = "90", rows = "15" })
    </div>

    <p>
        <input type="submit" value="Update" />
    </p>
</fieldset>
}

<div>
@Html.ActionLink("Back to List", "Index")
</div>

当我调试时，我看到我的控制器中的'careerGoal'为空...我感谢任何帮助！

更新 - 也许它是一个模范的东西？我实际上在不同的模型中有这个字段...这是我的模型代码，以防万一......

型号：

public bool editCareerGoal(ilpCareerGoal tcareerGoal)
        {
            employeeDataClassesDataContext careerGoals = new employeeDataClassesDataContext();
            ilpCareerGoal careerGoal;

            try
            {                   
                careerGoal = careerGoals.ilpCareerGoals.Single(c => c.emplID == tcareerGoal.emplID);
                careerGoal.careerGoal = tcareerGoal.careerGoal;
                careerGoals.SubmitChanges();
                return true;
            }
            catch
            {
                return false;
            }
        }

Answer 1

careerGoal类中的属性ilpCareerGoal与careerGoal操作中ilpCareerGoal类型的editCareerGoal变量之间的名称冲突可能是导致DefaultModelBinder出现神经衰弱。

尝试将操作中变量的名称更改为不同的名称，例如careerGoalModel。

对象引用未设置为对象的实例 - 表单对象为空？

1 个答案: