/// <summary>
/// 16进制字符转换为byte数组
/// </summary>
/// <param name="hexString">偶数位,由16进制字符[0-9a-fA-F]组成</param>
/// <returns>null为转换失败</returns>
private byte[] HexStringToBytes(string hexString)
{
if (string.IsNullOrEmpty(hexString))
return null;
int hexStringLength = hexString.Length;
if (hexStringLength % 2 != 0)
return null;
Regex r = new Regex(@"[0-9a-fA-F]");
if (!r.IsMatch(hexString))
return null;
int bufferLength = hexStringLength / 2;
byte[] buffer = new byte[bufferLength];
for (int i = 0; i < bufferLength; i++)
{
buffer[i] = Convert.ToByte(hexString.Substring(i * 2, 2), 16); //2个16进制字符转换为一个byte
}
return buffer;
}
16进制字符串转换为byte数组的相关教程结束。