如何编写一个简单的 Html.DropDownListFor()? [英] How to write a simple Html.DropDownListFor()?

问题描述

在 ASP.NET MVC 2 中，我想编写一个非常简单的下拉列表，它提供静态选项.例如，我想提供红色"、蓝色"和绿色"之间的选择.

In ASP.NET MVC 2, I'd like to write a very simple dropdown list which gives static options. For example I'd like to provide choices between "Red", "Blue", and "Green".

推荐答案

参见 thisMSDN 文章和堆栈溢出示例用法.

假设您有以下 Linq/POCO 类:

Let's say that you have the following Linq/POCO class:

public class Color
{
    public int ColorId { get; set; }
    public string Name { get; set; }
}

假设您有以下模型:

public class PageModel 
{
   public int MyColorId { get; set; }
}

最后，假设您有以下颜色列表.它们可能来自 Linq 查询、静态列表等:

And, finally, let's say that you have the following list of colors. They could come from a Linq query, from a static list, etc.:

public static IEnumerable<Color> Colors = new List<Color> { 
    new Color {
        ColorId = 1,
        Name = "Red"
    },
    new Color {
        ColorId = 2,
        Name = "Blue"
    }
};

在您看来，您可以像这样创建一个下拉列表:

In your view, you can create a drop down list like so:

<%= Html.DropDownListFor(n => n.MyColorId, 
                         new SelectList(Colors, "ColorId", "Name")) %>

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