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

问题描述

在ASP.NET MVC 2，我想编写一个非常简单的下拉列表赋予静态的选项。比如我想提供红，蓝和绿之间的选择。

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

请参见这个MSDN文章和<一个href=\"http://stackoverflow.com/questions/1916462/dropdownlistfor-in-editortemplate-not-selecting-value\">example这里使用堆栈溢出。

假设你有以下的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; }
}

和我们说，你有以下型号：

And let's say that you have the following model:

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

最后，让我们说，你有颜色下面的列表。他们可能来自LINQ查询，从静态列表等。

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，您可以创建一个下拉列表，像这样：

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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