你如何绑定枚举到DropDownList控件在ASP.NET中？ [英] How do you bind an Enum to a DropDownList control in ASP.NET?

问题描述

让我们说我有以下简单枚举：

Let's say I have the following simple enum:

enum Response
{
    Yes = 1,
    No = 2,
    Maybe = 3
}

我如何可以将绑定该枚举到DropDownList控件，这样的描述显示在列表以及检索相关的数值（1,2,3），一旦一个选项被选中？

How can I bind this enum to a DropDownList control so that the descriptions are displayed in the list as well as retrieve the associated numeric value (1,2,3) once an option has been selected?

推荐答案

我可能不会绑定，因为它是一个枚举，它会经过编译的时候（除非我是不会改变的数据米有那些的 stoopid 的时刻）之一。

I probably wouldn't bind the data as it's an enum, and it won't change after compile time (unless I'm having one of those stoopid moments).

只是为了更好地遍历枚举：

Better just to iterate through the enum:

Dim itemValues As Array = System.Enum.GetValues(GetType(Response))
Dim itemNames As Array = System.Enum.GetNames(GetType(Response))

For i As Integer = 0 To itemNames.Length - 1
    Dim item As New ListItem(itemNames(i), itemValues(i))
    dropdownlist.Items.Add(item)
Next

或者C＃中的相同

Or the same in C#

Array itemValues = System.Enum.GetValues(typeof(Response));
Array itemNames = System.Enum.GetNames(typeof(Response));

for (int i = 0; i <= itemNames.Length - 1 ; i++) {
    ListItem item = new ListItem(itemNames[i], itemValues[i]);
    dropdownlist.Items.Add(item);
}

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