C# 将所有列表内容连接到一个字符串中

将所有列表内容连接到一个字符串中是一项常见的编程任务，特别是在处理文本或生成报告时。在C#中，我们可以使用字符串连接或StringBuilder类来完成这个任务。

csharp
List names = new List { "Alice", "Bob", "Charlie", "Dave" };
string joinedString = string.Join(", ", names);
Console.WriteLine(joinedString);

Alice, Bob, Charlie, Dave

csharp
List names = new List { "Alice", "Bob", "Charlie", "Dave" };
StringBuilder sb = new StringBuilder();
foreach (string name in names)
{
    sb.Append(name);
    sb.Append(", ");
}
// 删除最后一个逗号和空格
if (sb.Length > 0)
{
    sb.Length -= 2;
}
string joinedString = sb.ToString();
Console.WriteLine(joinedString);

Alice, Bob, Charlie, Dave

csharp
using System;
using System.Collections.Generic;
using System.Text;
namespace StringJoinExample
{
    class Program
    {
        static void Main(string[] args)
        {
            List names = new List { "Alice", "Bob", "Charlie", "Dave" };
            // 使用字符串连接
            string joinedString = string.Join(", ", names);
            Console.WriteLine("使用字符串连接:");
            Console.WriteLine(joinedString);
            Console.WriteLine();
            // 使用StringBuilder类
            StringBuilder sb = new StringBuilder();
            foreach (string name in names)
            {
                sb.Append(name);
                sb.Append(", ");
            }
            if (sb.Length > 0)
            {
                sb.Length -= 2;
            }
            joinedString = sb.ToString();
            Console.WriteLine("使用StringBuilder类:");
            Console.WriteLine(joinedString);
            Console.WriteLine();
        }
    }
}