C# 列舉 Equals 方法
使用 Equals() 方法找出列舉之間的相等性。
假設我們有以下列舉。
enum Products { HardDrive, PenDrive, Keyboard};建立兩個 Product 物件並分配相同的值。
Products prod1 = Products.HardDrive; Products prod2 = Products.HardDrive;
現在使用 Equals() 方法檢查相等性。結果為 True,因為兩者有著相同的底層值。
示例
using System;
class Program {
enum Products {HardDrive, PenDrive, Keyboard};
enum ProductsNew { Mouse, HeadPhone, Speakers};
static void Main() {
Products prod1 = Products.HardDrive;
Products prod2 = Products.HardDrive;
ProductsNew newProd1 = ProductsNew.HeadPhone;
ProductsNew newProd2 = ProductsNew.Speakers;
Console.WriteLine("Both are same products = {0}", prod1.Equals(prod2) ? "Yes" : "No");
Console.WriteLine("Both are same products = {0}", newProd1.Equals(newProd2) ? "Yes" : "No");
}
}輸出
Both are same products = Yes Both are same products = No
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