Question

我正在使用MVC 4和EntityFramework 5.

在这个例子中，我尝试使用简单的表单参数保存新的“Contact”对象后，我得到了两个EntityValidationErros。

其中一个Contact属性是“Address”，它被填充在同一个视图中（与其他Contact的属性相同。

当我提交表单时，我得到一个全新的Contact对象，其中包含与表单参数匹配的完整Address atribute。然而，当我尝试保存它时，我的联系人地址中缺少参数的EntityValidationError（确切地说是2）。

我的观点：

<div class="editor-label">
    @Html.LabelFor(model => model.Address.City)
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.Address.City)
        @Html.ValidationMessageFor(model => model.Address.City)
    </div>

    <div class="editor-label">
        @Html.LabelFor(model => model.Address.Street)
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.Address.Street)
        @Html.ValidationMessageFor(model => model.Address.Street)
    </div>

    <div class="editor-label">
        @Html.LabelFor(model => model.Address.State_province)
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.Address.State_province)
        @Html.ValidationMessageFor(model => model.Address.State_province)
    </div>

    <div class="editor-label">
        @Html.LabelFor(model => model.Address.Zip_postalCode)
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.Address.Zip_postalCode)
        @Html.ValidationMessageFor(model => model.Address.Zip_postalCode)
    </div>

    <div class="editor-label">
        @Html.LabelFor(model => model.Address.Country)
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.Address.Country)
        @Html.ValidationMessageFor(model => model.Address.Country)
    </div>

    <br />
    <p>
        <input type="submit" value="Save" />
    </p>

在ContactCOntroller中创建操作：

[HttpPost]
    [ValidateAntiForgeryToken]
    public ActionResult Create(Contact contact)
    {
        try
        {
            if (ModelState.IsValid)
            {
                TempData["contact"] = contact;
                unitOfWork.currentClient.Contacts.Add(contact);
                unitOfWork.Save();
                return View("Index");
            }

            return View(contact);
        }
        catch (Exception ex)
        {
            return View(contact);
        }
    }

任何想法？

Answer 1

从模型状态中获取错误。

使用Linq：

var allErrors = ModelState.Values.SelectMany(v => v.Errors);

另一种选择：

public static List<string> GetErrorListFromModelState
                                              (ModelStateDictionary modelState)
{
      var query = from state in modelState.Values
                  from error in state.Errors
                  select error.ErrorMessage;

      var errorList = query.ToList();
      return errorList;
}

资源：

How to get all Errors from ASP.Net MVC modelState?

无故获取EntityValidationErrors

1 个答案: