c# – 如何计算校验和

我正在开发仪器驱动程序,我想知道如何计算帧校验和.

说明：

1. Expressed by characters [0-9] and [A-F].

2. Characters beginning from the character after [STX] and until [ETB] or
   [ETX] (including [ETB] or [ETX]) are added in binary.

3. The 2-digit numbers,which represent the least significant 8 bits in
   hexadecimal code,are converted to ASCII characters [0-9] and [A-F].

4. The most significant digit is stored in CHK1 and the least significant
   digit in CHK2.

我没有超过第三和第四点.

可以为c#提供示例代码.

请帮帮我.

解决方法

最后我得到答案,这里是计算校验和的代码：

private string CalculateChecksum(string dataToCalculate)
{
    byte[] bytetoCalculate = Encoding.ASCII.GetBytes(dataToCalculate);
    int checksum = 0;
    foreach (byte chData in bytetoCalculate)
    {
        checksum += chData;
    }
    checksum &= 0xff;
    return checksum.ToString("X2");
}