C# - 生成10个字符随机字母数字字符串的最有效方法是什么？

using System;
using System.Linq;

public class Program
{
    private static Random random = new Random();
    private static string characters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";

    public static void Main()
    {
        string randomString = GenerateRandomString(10);
        Console.WriteLine(randomString);
    }

    public static string GenerateRandomString(int length)
    {
        return new string(Enumerable.Repeat(characters, length)
            .Select(s => s[random.Next(s.Length)]).ToArray());
    }
}