字节数组到字节的转换错误

Question

I am trying to flip the bits of an unsigned 32-bit integer and output the resultant integer. The following is my code.

int numberOfTries = Convert.ToInt32(Console.ReadLine());
        for (int i = 0; i < numberOfTries; i++)
        {
            uint input = Convert.ToUInt32(Console.ReadLine());
            byte[] bInput = BitConverter.GetBytes(input);
            if (BitConverter.IsLittleEndian)
                Array.Reverse(bInput);
            byte[] result = bInput;

            BitArray b = new BitArray(new byte[] { result });
            b.Not();
            uint res = 0;
            for (int i2 = 0; i2 != 32; i2++)
            {
                if (b[i2])
                {
                    res |= (uint)(1 << i2);
                }
            }

            Console.WriteLine(res);
        }

However, the compiler complains that "Cannot implicitly convert type 'byte[]' to 'byte' " on the line where I declare BitArray b. I have declared it as a byte[] and have no idea why this error is being thrown.

Answer 1

result is already a byte[] , so do this instead:

BitArray b = new BitArray(result);

The part that's actually causing the problem is this:

new byte[] { result }

The reason for this is because the array initializer needs to take expressions that are compatible with the element type of the array (here, byte ). From 12.6 Array Initializers :

For a single-dimensional array, the array initializer must consist of a sequence of expressions that are assignment compatible with the element type of the array.