C# Aggregate() 方法
programmingserver side programmingcsharp更新于 2025/9/15 23:12:00
Aggregate() 方法将累加器函数应用于序列。
以下是我们的数组 −
string[] arr = { "DemoOne", "DemoTwo", "DemoThree", "DemoFour"};
现在使用 Aggregate() 方法。我们已将 ssed 值设置为 “DemoFive” 以进行比较。
string res = arr.AsQueryable().Aggregate("DemoFive", (longest, next) => next.Length > longest.Length ? next : longest,str => str.ToLower());
此处，结果字符串的字符数应大于初始种子值，即"DemoFive"。
示例
using System;
using System.Linq;
class Demo {
static void Main() {
string[] arr = { "DemoOne", "DemoTwo", "DemoThree", "DemoFour"};
string res = arr.AsQueryable().Aggregate("DemoFive", (longest, next) => next.Length > longest.Length ? next : longest,str => str.ToLower());
Console.WriteLine("The string with more number of characters: {0}", res);
}
}
输出
The string with more number of characters: demothree
