Question

感谢提醒，所以我也添加了模型的内容。我有一个视图，其中有一个表单可以将模型发布到操作，现在它的工作原理如下：

<script src="@Url.Content("~/Scripts/ckeditor/ckeditor.js")">
</script>

<br />
<br />

@using (Html.BeginForm("BlogSubmit", "Blog", FormMethod.Post, new { @class = "container"}))
{   
    <br />
    <br />
    <br />
  <p class="text-warning">Blog Title</p>
    <div class="span6">
  @Html.TextBoxFor(m => m.BlogTitles.Titles, new { @class = "input-xxlarge", @placeholder="Your blog title is here",@style="width: 500px"})
        </div>
<br />
 <br />
 <br />   
  <p class="text-warning">Blog Content</p>

   @Html.TextAreaFor(m => m.BlogContents.Contents, new { @id = "editor1" });
    <br />
<button type="submit" class="btn btn-success">Submit Blog</button>
}

<script>
    CKEDITOR.replace("editor1");    
</script>

然后在下面的操作中，获取blogmodel的模型包含博客的所有信息。

blogmodel

[HttpPost]
[ValidateInput(false)]
public ActionResult BlogSubmit(BlogPageModel blogData)
{
    blogData.Blogs.LastModified = DateTime.Now;
    DB.BlogContenttbl.Add(new BlogContent { Contents = blogData.BlogContents.Contents });
    DB.BlogTitletbl.Add(new BlogTitle { Titles = blogData.BlogTitles.Titles });
    DB.SaveChanges();

    var blogTitleID = from t in DB.BlogTitletbl
                      where t.Titles == blogData.BlogTitles.Titles
                      select t.TitleID;
    var blogContentID = from c in DB.BlogContenttbl
                        where c.Contents == blogData.BlogContents.Contents
                        select c.ContentID;
    int blogTitleIDToInt = Convert.ToInt32(blogTitleID.First());
    int blogContentIDToInt = Convert.ToInt32(blogContentID.First());
    DB.Blogtbl.Add(new Blog { TitleID = blogTitleIDToInt, ContentID = blogContentIDToInt, LastModified = DateTime.Now });
    DB.SaveChanges();

    TempData["blog"] = blogData;
    return RedirectToAction("BlogPost");
}

模型

这里我要澄清的是这个模型视图不是映射到表的实例，而只是我为视图专门创建的模型。

public class BlogPageModel
{
    public Blog Blogs { get; set; }
    public BlogAid BlogAids { get; set; }
    public BlogAuthor BlogAuthors { get; set; }
    public BlogComment BlogComments { get; set; }
    public BlogContent BlogContents { get; set; }
    public BlogNews BlogNews { get; set; }
    public BlogTitle BlogTitles { get; set; }
}

但是，实际上我希望获得博客 lastmodified 时间并在 blogpost 视图中显示，映射到表格的博客真正模型如下：

public class Blog
{
    public int BlogID { get; set; }
    public DateTime LastModified { get; set; }
    public System.Nullable<int> AidID { get; set; }
    public virtual BlogAid BlogAid{ get; set; }
    public System.Nullable<int> AuthorID { get; set; }
    public virtual BlogAuthor BlogAuthor { get; set; }
    public System.Nullable<int> CommentID { get; set; }
    public virtual BlogComment BlogComment { get; set; }
    public System.Nullable<int> TitleID { get; set; }
    public virtual BlogTitle BlogTitle { get; set; }
    public System.Nullable<int> ContentID { get; set; }
    public virtual BlogContent BlogContent { get; set; }
    public System.Nullable<int> NewsID { get; set; }
    public virtual BlogNews BlogNews { get; set; }
}

我真的不知道为什么它不起作用。并且，我在这行代码中得到了以下错误：

blogData.Blogs.LastModified = DateTime.Now;

对象引用未设置为对象的实例。

Answer 1

尝试实例化日期时间，例如

[...]
var now = new DateTime();
now = DateTime.Now;

DB.Blogtbl.Add(new Blog { TitleID = blogTitleIDToInt, ContentID = blogContentIDToInt,     LastModified = now   });

[...]

Answer 2

new DateTime(DateTime.Now.Ticks)

Asp.net MVC DateTime.Now无法传递给模特？

2 个答案: