Question

是否可以使用方法代替

的属性

这有效：

HTML.DropDownListFor(x => x.Book, 
                     new SelectList(ViewBag.Books, 
                                    "ID", 
                                    "Title", 
                                    new { @class = "form-control"}))

我测试的不是：

HTML.DropDownListFor(x => x.Book, 
                     new SelectList(ViewBag.Books, 
                                    "ID", 
                                    "ToString()", 
                                    new { @class = "form-control"}))

有没有办法做到这一点？

Answer 1

你不能通过一个功能，如果你回到SelectList MSDN文档，你将无法找到任何覆盖它的功能。

SelectList MSDN

Answer 2

我找到了解决方法。对于任何对此感兴趣的人来说，这是有效的：

book.cs

public class Book
{
    [HiddenInput(DisplayValue = false)]
    public Guid ID { get; set; }

    [Display(Name = "Booktitle")]
    public string Title { get; set; }
    [Required]
    [Display(Name = "Voornaam")]
    public string AuthorFirstName { get; set; }
    [Required]
    [Display(Name = "Tussenvoegsel")]
    public string AuthorLastName { get; set; }

    public string FullName
    {
        get { return CompleteName(); }
    }

    private string CompleteName()
    {
        return this.AuthorFirstName + " " + this.AuthorLastName; 
    }
}

View.cshtml：

@Html.DropDownListFor(x => x.Book, new SelectList(ViewBag.Books, "ID", "FullName"), new { @class = "form-control" })

DropDownListFor方法而不是属性

2 个答案: