c# - 从 id 转换静态只读属性

Question

我有以下类(class):

public sealed class TaskType
{
    private readonly String name;
    private readonly int value;

    public static readonly TaskType BUG = new TaskType(1, "Bug");
    public static readonly TaskType ISSUE = new TaskType(2, "Issue");
    public static readonly TaskType FEATURE = new TaskType(3, "Feature");
    //more here

    private TaskType(int value, String name)
    {
        this.name = name;
        this.value = value;
    }

    public override string ToString()
    {
        return name;
    }
}

我如何从一个值转换为 TaskType:

int i = 1;
String name = (TaskType)i.ToString(); // this is where i am stuck!

我知道我必须使用反射来遍历属性，但这对我不起作用。

例如，我曾尝试使用此功能，但这不起作用:

private TaskType getTaskType(int id)
{
    PropertyInfo[] properties = typeof(TaskType).GetProperties(BindingFlags.Public | BindingFlags.Static);

    foreach (PropertyInfo property in properties)
    {
        TaskType t = (TaskType)property.GetValue(null, null);
        if (t.ToValue() == id)
            return t;
    }

    return null;
}

Answer 1

为什么不直接使用枚举类型呢？

public enum Task {
  Bug,
  Issue,
  Feature
}

然后你可以从一个 int 中转换它。

int i = 1;
Task myTask = (Task)i;

也可以从字符串名称中获取。

string s = "Bug";
Task bugType = Enum.Parse(typeof(Task), s);