c# - ASP.NET MVC4 + Razor on Mono + EF 6 DateTime 崩溃

Question

我正在尝试使用 Mono 运行应用程序。它在 IIS 上运行良好，但我希望它在 Mono 上运行。但它总是把这个扔给我:

The 'CreateDate' property on 'Article' could not be set to a 'System.String' value. You must set this property to a non-null value of type 'System.DateTime'.

事实是抛出的地方是这样的:

public Article[] Select(int number)
        {
            return DbContextProvider.Current.Set<Article>()
                .OrderByDescending(n => n.CreateDate)
                .Take(number)
                .ToArray();
        }

System.String 没有任何用法。实际上，唯一将它转换为字符串的地方就在这里:

@using BaseSite.Extensions.DateTimeExtensions
@model Classic.Views.Home.Articles.ArticleViewModel

<div class="article-wrapper">
    <div class="article-title">
        @Html.ActionLink(Model.Title, "Index", "Articles", new RouteValueDictionary{{"articleId", Model.ArticleId}}, null)
    </div>
    @Html.Raw(Model.Text)
    <div class="article-data date">
        @Html.ActionLink(Model.UserId, "Index", "Profile", new RouteValueDictionary{{"userId", Model.UserId}}, null),
        @Model.CreateDate.Format(true)
    </div>
</div>

但错误是在那之前抛出的。而且，它在 IIS 上工作，只有在 Mono 上才有这样一个奇怪的错误。

数据库表布局为:

CREATE TABLE [dbo].[Articles](
    [ArticleId] [uniqueidentifier] NOT NULL,
    [UserId] [nvarchar](30) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
    [CreateDate] [datetime2](7) NOT NULL,
    [Title] [nvarchar](50) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
    [Text] [nvarchar](max) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
PRIMARY KEY CLUSTERED 
(
    [ArticleId] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]

映射类:

using System;

namespace BusinessObjects.Articles
{
    public class Article
    {
        public Guid ArticleId { get; set; }
        public string UserId { get; set; }
        public DateTime CreateDate { get; set; }

        public string Title { get; set; }
        public string Text { get; set; }
    }
}

using System.Data.Entity;

namespace BusinessObjects.Articles
{
    public class ArticleMapper : IDbMapper
    {
        public void Map(DbModelBuilder modelBuilder)
        {
            var entity = modelBuilder.Entity<Article>();

            entity.HasKey(n => n.ArticleId);
            entity.Property(n => n.ArticleId).IsRequired();

            entity.Property(n => n.UserId).IsRequired().HasMaxLength(30);
            entity.Property(n => n.Title).IsRequired().HasMaxLength(50);
            entity.Property(n => n.Text).IsRequired().IsMaxLength();
        }
    }
}

是的。我还有其他带有 DateTime 的表，它们都会出现该错误。它们都在 IIS (MS Stack) 上正常运行，它只在 Mono + xsp4 上有错误。谁能提供任何帮助？我迷失在这种怪异之中。

PS:我尝试了几乎所有的单声道版本，现在我在 Mono git master 3.8.1 (master/38c3874)，3.6、3.2.8 等也是如此

Answer 1

正如 Alexander Köplinger 所提到的，似乎是 Mono 中“datetime2”的错误。通过从 MsSql 迁移到 PostgreSql 来修复 - 它在计划中。