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如何在Html.ValidationSummary中指定数据注释错误的顺序

data-annotations asp.net-mvc

David · 技术社区 · 14 年前

<%= Html.ValidationSummary("Please review the errors below") %>

有什么方法可以指定错误的显示顺序吗?

例子:

public class ClassA { [Required]public string AProperty; }
public class ClassB : ClassA { [Required]public string BProperty; }

AProperty: <%= Html.TextBoxFor(m => m.AProperty) %>
BProperty: <%= Html.TextBoxFor(m => m.BProperty) %>

验证错误显示为:

The BProperty is required.
The AProperty is required.

4 回复 | 直到 14 年前

-1

John Farrell 14 年前

不。反射用于获取所有dataannotation,它们总是按照调用 typeof(MagicSocks).GetTYpe().GetProperties() . 在您的例子中,我很确定派生类属性总是出现在基类型属性之前。

您必须编写自己的助手和属性,才能按您选择的顺序显示验证错误。

Yuck 12 年前

public static void OrderByKeys(this ModelStateDictionary modelStateDictionary, IEnumerable<string> keys)
{
    ModelStateDictionary result = new ModelStateDictionary();
    foreach (string key in keys)
    {
        if (modelStateDictionary.ContainsKey(key) && !result.ContainsKey(key))
        {
            result.Add(key, modelStateDictionary[key]);
        }
    }
    foreach (string key in modelStateDictionary.Keys)
    {
        if (!result.ContainsKey(key))
        {
            result.Add(key, modelStateDictionary[key]);
        }
    }
    modelStateDictionary.Clear();
    modelStateDictionary.Merge(result);
}

可通过以下方式使用:

ModelState.OrderByKeys(new[] { "AProperty", "BProperty" });

Hasmukh 14 年前

我不确定我的回答是对是错,你可以这样试试。

   public ActionResult yourAction(your params)
    { 
           if (!ModelState.IsValid)
            {
                var errs = from er in tmpErrs
                           orderby er.Key
                           select er;

                ModelState.Clear();

                foreach (var err in errs)
                {
                    ModelState.Add(err);
                }
            }
    // your code 

    }

Andrew Gunn 11 年前

using System.Linq;
using System.Web.Mvc;

namespace 
{
    public class OrderedModelStateAttribute : FilterAttribute, IActionFilter
    {
        public void OnActionExecuted(ActionExecutedContext filterContext)
        {
            var modelState = filterContext.Controller.ViewData.ModelState;
            var orderedModelState = new ModelStateDictionary();

            foreach (var key in filterContext.HttpContext.Request.Form.Keys.Cast<string>()
                                             .Where(
                                                 key =>
                                                 modelState.ContainsKey(key) && !orderedModelState.ContainsKey(key)))
            {
                orderedModelState.Add(key, modelState[key]);
            }

            foreach (var key in modelState.Keys.Where(key => !orderedModelState.ContainsKey(key)))
            {
                orderedModelState.Add(key, modelState[key]);
            }

            modelState.Clear();
            modelState.Merge(orderedModelState);
        }

        public void OnActionExecuting(ActionExecutingContext filterContext)
        {
        }
    }
}

使用以下代码将筛选器添加到所有操作: filters.Add(new OrderedModelStateAttribute());