如何在C#中获取字符串的ASCII值

using System;

class Program
{
    static void Main()
    {
        string str = "Hello, World!";

        for (int i = 0; i < str.Length; i++)
        {
            char c = str[i];
            int asciiValue = c;
            Console.WriteLine($"The ASCII value of '{c}' is {asciiValue}");
        }
    }
}