如何将一些枚举值添加到组合框

发布于 2024-08-12 09:29:16 字数 695 浏览 2 评论 0原文

在下面的示例中，我想将以“APPLE”开头的口味添加到表单上的组合框中。当枚举具有唯一值时，它可以正常工作；然而，在我的示例中，两个枚举 PINEAPPLE_PEACH 和 APPLE_ORANGE 的值均为 1，这会弄乱结果。

两个具有相同值的枚举是错误的吗？如果是这样，我该如何更改代码以获得一致的结果？

    public enum Flavour
    {
        APPLE_PEACH = 0,
        PINEAPPLE_PEACH = 1,
        APPLE_ORANGE = 1,
        APPLE_BANANA = 3,
        PINEAPPLE_GRAPE = 4
    }

    private void AddFlavours()
    {
        foreach (Flavour flavour in Enum.GetValues(typeof(Flavour)))
        {
            string flavourName = Enum.GetName(typeof(Flavour), flavour);
            if (flavourName.StartsWith("APPLE"))
            {
                myComboBox.Items.Add(flavour);
            }
        }
    }

原文

In the following example I would like to add flavours that start with "APPLE" to a ComboBox on a form. When the enums have unique values it works fine; however, in my example two enums PINEAPPLE_PEACH and APPLE_ORANGE both have a value of 1 and this messes up the results.

Is it erroneous to have two enums with the same value and, if so, how can I change my code to get consistent results?

    public enum Flavour
    {
        APPLE_PEACH = 0,
        PINEAPPLE_PEACH = 1,
        APPLE_ORANGE = 1,
        APPLE_BANANA = 3,
        PINEAPPLE_GRAPE = 4
    }

    private void AddFlavours()
    {
        foreach (Flavour flavour in Enum.GetValues(typeof(Flavour)))
        {
            string flavourName = Enum.GetName(typeof(Flavour), flavour);
            if (flavourName.StartsWith("APPLE"))
            {
                myComboBox.Items.Add(flavour);
            }
        }
    }

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

久光 2024-08-19 09:29:16

使用 Linq，您可以使用以下命令：

foreach (string flavourName in Enum.GetNames(typeof(Flavour)).Where(s => s.StartsWith("APPLE")))     
{
    myComboBox.Items.Add(flavourName);
}

With Linq, you may use this:

foreach (string flavourName in Enum.GetNames(typeof(Flavour)).Where(s => s.StartsWith("APPLE")))     
{
    myComboBox.Items.Add(flavourName);
}

回复收藏 0 原文

生寂 2024-08-19 09:29:16

您可以使用 Enum.GetNames 而不是 GetValues。它会是这样的（未测试）：

 foreach (string flavourName in Enum.GetNames(typeof(Flavour)))
 {
     if (flavourName.StartsWith("APPLE"))
     {
         myComboBox.Items.Add(Enum.Parse(typeof(flavour), flavourName));
     }
 }

You can use Enum.GetNames instead of GetValues. It would be something like this (not tested):

 foreach (string flavourName in Enum.GetNames(typeof(Flavour)))
 {
     if (flavourName.StartsWith("APPLE"))
     {
         myComboBox.Items.Add(Enum.Parse(typeof(flavour), flavourName));
     }
 }

回复收藏 0 原文

~没有更多了~