大虾们，又打扰你们了，本菜鸟又有问题要请教了~~~~
namespace __2
{
    class Program
    {
        static void Main(string[] args)
        {
            byte[] bydata = new byte[1000];
            char[] chardata = new char[1000];
            FileStream File = new FileStream("../../1.txt", FileMode.Open);
            File.Seek(0, SeekOrigin.Begin);
            File.Read(bydata, 0, 1000);
            Decoder d = Encoding.UTF8.GetDecoder();
            d.GetChars(bydata, 0, bydata.Length, chardata, 0);
            Console.WriteLine(chardata);
            Console.ReadKey();
        }
    }
}
我想问一下这个语句“ d.GetChars(bydata, 0, bydata.Length, chardata, 0);”是什么意思~~~