C# Data Helper

QData

    [TestClass]
    public class QData
    {
        ###############################
        # str hex to int 32     
        #####################
        public static int StrHexToInt(string hexStr)
        {
            return Convert.ToInt32(hexStr.Replace(" ", ""), 16);
        }
                
        # ------------------
        [TestMethod]
        public void HexStrToInt_Positive()
        {
            string hexStr = "00 00 01 0C ";
            int result = QData.StrHexToInt(hexStr);
            Assert.AreEqual(268, result);
        }

        [TestMethod]
        public void HexStrToInt_Negitive()
        {
            string hexStr = "F0 00 01 0C ";
            int result = QData.StrHexToInt(hexStr);
            Assert.AreEqual(-268435188, result);
        }
        
        
        
        
        
        #############################
        # bytes to str hex        
        ###################
        public static string BytesToStrHex(byte[] bytes, string separator=" ")
        {
            string hexStr = BitConverter.ToString(bytes);
            if (separator != "-")
                hexStr = hexStr.Replace("-", separator);
            return hexStr;
        }
        
        
        
        
        #########################
        # 4 bytes to int 32, 大端在前
        ####################
        public static int Bytes4ToInt(byte[] bytes, int start)
        {
            if (BitConverter.IsLittleEndian)
                Array.Reverse(bytes);
            return BitConverter.ToInt32(bytes, start);
        }
        
        # --------------
        [TestMethod]
        public void Bytes4ToInt()
        {
            byte[] bytes = new byte[] { 0xF0, 0x00, 0x01, 0x0C };
            int result = QData.Bytes4ToInt(bytes, 0);
            Assert.AreEqual(-268435188, result);
        }




        #########################
        # 4 bytes to long, 大端在前
        ##################
        public static long Bytes4ToLong(byte[] bytes, int start)
        {
            if (BitConverter.IsLittleEndian)
                Array.Reverse(bytes);
            return BitConverter.ToUInt32(bytes, start);
        }
        
        # ------------------------
        [TestMethod]
        public void Bytes8ToLong()
        {
            byte[] bytes = new byte[] { 0x00, 0x11, 0xFD, 0x41 };
            long result = QData.Bytes4ToLong(bytes, 0);
            Assert.AreEqual(1178945, result);
        }
        
    }