覆盖FileStream中的字符串

Question

我的代码是：

string sMD5Hash = sb.ToString();

using(Stream stream = new FileStream(sFile, FileMode.OpenOrCreate))
{
    stream.Seek(5, SeekOrigin.Begin);
    stream.Write(Encoding.ASCII.GetBytes(sMD5Hash), 0, sMD5Hash.Length);
}

我想要做的是，寻求5并开始在那里写我的字符串。不经常写，因为它会推动下一个字节前进。但相反，我想覆盖字节。我怎么能这样做？

Answer 1

制作FileStream FileMode.OpenOrCreate和FileAccess.ReadWrite

using (Stream stream = new FileStream(sFile, FileMode.OpenOrCreate, FileAccess.ReadWrite))
{
    stream.Seek(5, SeekOrigin.Begin);
    stream.Write(Encoding.ASCII.GetBytes(sMD5Hash), 0, sMD5Hash.Length);
}