ASP.NET MVC的datetime文化传递的问题时，值回控制器 [英] ASP.NET MVC datetime culture issue when passing value back to controller

问题描述

我如何知道我的控制器/模型应该期待解析日期时间什么样的文化？

我使用了一些<一个href=\"http://blogs.msdn.com/b/stuartleeks/archive/2011/01/25/asp-net-mvc-3-integrating-with-the-jquery-ui-date-picker-and-adding-a-jquery-validate-date-range-validator.aspx\">this帖子落实jQuery的日期选择在我的MVC应用程序。

I was using some of this post to implement jquery datepicker into my mvc application.

当我提交我不使用的日期格式美国，它被迷失东京的日期，所以当它被发送到我的控制器，它只是变得无效。

When i submit the date it gets "lost in translation" i'm not using the US formatting for the date, so when it gets sent to my controller it simply becomes null.

我已经在用户选择日期的形式：

I have a form where the user chooses a date:

@using (Html.BeginForm("List", "Meter", FormMethod.Get))
{
    @Html.LabelFor(m => m.StartDate, "From:")
    <div>@Html.EditorFor(m => m.StartDate)</div>

    @Html.LabelFor(m => m.EndDate, "To:")
    <div>@Html.EditorFor(m => m.EndDate)</div>
}

我做了一个编辑模板此，落实jQuery的日期选择器：

I've made an edit template for this, to implement the jquery datepicker:

@model DateTime
@Html.TextBox("", Model.ToString("dd-MM-yyyy"), new { @class = "date" }) 

然后我创建日期选择器部件是这样的。

I then create the datepicker widgets like this.

$(document).ready(function () {
    $('.date').datepicker({ dateFormat: "dd-mm-yy" });
});

这一切工作正常。

All this works fine.

这里就是问题开始，这是我的控制器：

Here is where the problems start, this is my controller:

[HttpGet]
public ActionResult List(DateTime? startDate = null, DateTime? endDate = null)
{
    //This is where startDate and endDate becomes null if the dates dont have the expected formatting.
}

这就是为什么我想以某种方式告诉我的控制器，它应该期待什么文化？
是我的模型错了吗？可我总告诉它使用的文​​化，喜欢用数据注解属性？

This is why i would like to somehow tell my controller what culture it should expect? Is my model wrong? can i somehow tell it which culture to use, like with the data annotation attributes?

public class MeterViewModel {
    [Required]
    public DateTime StartDate { get; set; }
    [Required]
    public DateTime EndDate { get; set; }
}

---

编辑：<一href=\"http://weblogs.asp.net/melvynharbour/archive/2008/11/21/mvc-modelbinder-and-localization.aspx\">this链接解释我的问题，也是一个很好的解决它以及。由于gdoron

---

this link explains my issue and a very good solution to it aswell. Thanks to gdoron

推荐答案

您可以创建一个活页夹的扩展来处理文化的日期格式。

You can create a Binder extension to handle the date in the culture format.

这是我写来处理与十进制类型相同的问题样本，希望得到您的想法

This is a sample I wrote to handle the same problem with Decimal type, hope you get the idea

 public class DecimalModelBinder : IModelBinder
 {
   public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
   {
     ValueProviderResult valueResult = bindingContext.ValueProvider.GetValue(bindingContext.ModelName);
     ModelState modelState = new ModelState { Value = valueResult };
     object actualValue = null;
     try
     {
       actualValue = Convert.ToDecimal(valueResult.AttemptedValue, CultureInfo.CurrentCulture);
     }
     catch (FormatException e)
     {
       modelState.Errors.Add(e);
     }

     bindingContext.ModelState.Add(bindingContext.ModelName, modelState);
     return actualValue;
  }
}

更新

要使用它只需声明粘结剂在Global.asax中像这样

To use it simply declare the binder in Global.asax like this

protected void Application_Start()
{
  AreaRegistration.RegisterAllAreas();
  RegisterGlobalFilters(GlobalFilters.Filters);
  RegisterRoutes(RouteTable.Routes);

  //HERE you tell the framework how to handle decimal values
  ModelBinders.Binders.Add(typeof(decimal), new DecimalModelBinder());

  DependencyResolver.SetResolver(new ETAutofacDependencyResolver());
}

然后当ModelBinder的已做了一些工作，它会自动知道该怎么做。
例如，这是包含类型小数的一些性质的模型的动作。我干脆什么也不做。

Then when the modelbinder has to do some work, it will know automatically what to do. For example, this is an action with a model containing some properties of type decimal. I simply do nothing

[HttpPost]
public ActionResult Edit(int id, MyViewModel viewModel)
{
  if (ModelState.IsValid)
  {
    try
    {
      var model = new MyDomainModelEntity();
      model.DecimalValue = viewModel.DecimalValue;
      repository.Save(model);
      return RedirectToAction("Index");
    }
    catch (RulesException ex)
    {
      ex.CopyTo(ModelState);
    }
    catch
    {
      ModelState.AddModelError("", "My generic error message");
    }
  }
  return View(model);
}

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