A limitation of C# enumerations is that their underlying type must be an integer, which can hinder the creation of enumerations that represent difficult-to-understand code. To solve this problem, several alternatives can be considered.
One technique is to use properties in classes. This approach provides a more enum-like syntax while maintaining the flexibility of using strings as values. For example, a Logger class can define properties to represent logging categories:
<code class="language-csharp">public class LogCategory { private LogCategory(string value) { Value = value; } public string Value { get; private set; } public static LogCategory Trace { get { return new LogCategory("Trace"); } } public static LogCategory Debug { get { return new LogCategory("Debug"); } } public static LogCategory Info { get { return new LogCategory("Info"); } } public static LogCategory Warning { get { return new LogCategory("Warning"); } } public static LogCategory Error { get { return new LogCategory("Error"); } } public override string ToString() { return Value; } }</code>
Another option is to pass a type-safe string value as a parameter to the method. This approach allows the creation of strongly typed methods that accept specific string values. An example of such a method in the Logger class:
<code class="language-csharp">public static void Write(string message, LogCategory logCategory) { var log = new LogEntry { Message = message }; Logger.Write(log, logCategory.Value); }</code>
How to use:
<code class="language-csharp">Logger.Write("这几乎就像一个枚举。", LogCategory.Info);</code>
Both techniques provide an alternative to enumerations for representing difficult-to-understand code, providing the benefits of type safety and readability.
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