求把一段C代码转成C#

#define POLYNOMIAL 0x08408
unsigned int GetCRC16(unsigned char* bufData, unsigned int sizeData)
{
unsigned int CRC, i;
unsigned char j;
CRC = 0;
for(i=0; i < sizeData; i++)
{
CRC ^= bufData[i];
for(j=0; j < 8; j++)
{
if(CRC & 0x0001) {CRC >>= 1; CRC ^= POLYNOMIAL;}
else CRC >>= 1;
}
}
return CRC;
}