关于c#：ASP.NET MVC：动态创建ValidationMessageFor

ASP.NET MVC: Create ValidationMessageFor Dynamically

我通过遍历数组来生成表单元素。因此，我有一个数组= [" name "，" age "]，然后遍历每个项目，并创建一个具有适当名称和相关数据的文本框。

因此，我动态创建了表单元素，使得

1 2	<input class="input-validation-error text-box single-line" data-val="true" data-val-required="@arr[i] is required" id="@arr[i]" name="@arr[i]" type="text" value=""> <span class="field-validation-error" data-valmsg-for="@arr[i]" data-valmsg-replace="true"></span>

而不是：

1 2	@Html.EditorFor(model => model.age) @Html.ValidationMessageFor(model => model.age)

但是，因此，没有生成客户端消息。它会在服务器端验证中捕获错误，但客户端会停止工作。

enter

1 2	@Html.EditorFor(model => model[@arr[i]]) @Html.ValidationMessageFor(model => model[@arr[i]])

我知道上面的代码行不通，只是为了强调我在解决方案中寻找的内容。

这有效：

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@model Testy20161006.Controllers.MessageViewModel
@{
Layout = null;
}

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
IndexStackOverflow900

</head>
<body>

@using (Html.BeginForm())
{
int i = 0;
foreach (var arr in Model.myArray)
{
<input class="input-validation-error text-box single-line" data-val="true"
data-val-required="@arr is required" id=@arr name=@arr type="text" value="">
<br />
@Html.ValidationMessage(arr);
i++;
}

<input type="submit" value="submit" />
}

</body>
</html>

控制器/型号：

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public class MessageViewModel
{
public List<string> myArray = new List<string>();
[Required]
public string name { get; set; }
[Required]
public string age { get; set; }
}

public class HomeController : Controller
{
[HttpPost]
public ActionResult IndexStackOverflow900(MessageViewModel mvm)
{
if (ModelState.IsValid)
{
}
else
{
//you can narrow it down to which field caused the error by inspecting ModelState
//List<ModelErrorCollection> errors = controller.ModelState.Select(x => x.Value.Errors)
// .Where(y => y.Count > 0)
// .ToList();
ModelState.AddModelError("name","name is required");
ModelState.AddModelError("age","age is required");
}

FactorCode(mvm);
return View(mvm);
}

public ActionResult IndexStackOverflow900()
{
MessageViewModel mvm = new MessageViewModel();
FactorCode(mvm);
return View(mvm);
}

public void FactorCode(MessageViewModel mvm)
{
mvm.myArray.Add("name");
mvm.myArray.Add("age");
}