我正在尝试使用Mono运行应用程序。它在IIS上运行正常,但我希望它在Mono上运行。但它总是把它扔给我:
'Article'上的'CreateDate'属性无法设置为'System.String'值。您必须将此属性设置为类型为“System.DateTime”的非null值。
事实是它抛出的地方是:
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,它转换为字符串的唯一地方是:
@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>
但错误在此之前被抛出。而且,它适用于IIS,只有在Mono上才会出现这样一个奇怪的错误。
数据库表格布局为:
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,是的。我还有其他表与DateTime,他们都得到了这个错误。它们都在IIS(MS Stack)上正常运行,它只在Mono + xsp4上出错。
有人可以提供任何帮助吗?我厌倦了这种疲惫。
PS:我试过几乎所有的单声道版本,现在我在Mono git master 3.8.1(master / 38c3874),同样的东西有3.6,3.2.8等
答案 0 :(得分:1)
正如AlexanderKöplinger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。