c# windows10大小端试

anlog2024-01-06 20:53

测试代码：

cs 复制代码

unsafe public void ceshi()
{
    byte[] by = BitConverter.GetBytes(0x12345678);
    Debug.WriteLine(" byte[0] = 0x" + by[0].ToString("x2"));
    Debug.WriteLine(" byte[1] = 0x" + by[1].ToString("x2"));
    Debug.WriteLine(" byte[2] = 0x" + by[2].ToString("x2"));
    Debug.WriteLine(" byte[3] = 0x" + by[3].ToString("x2"));

    for( int i = 0; i < 4;i ++)
    {
        fixed (byte* pB = &by[i])
        {
            ulong addr = (ulong)pB; // 得到内存的地址
            Debug.WriteLine($" byte[{i}]地址 = 0x" + addr.ToString("x2"));
        }
    }
}

输出结果

byte $0$ = 0x78

byte $1$ = 0x56

byte $2$ = 0x34

byte $3$ = 0x12

byte $0$ 地址 = 0x29a7af0

byte $1$ 地址 = 0x29a7af1

byte $2$ 地址 = 0x29a7af2

byte $3$ 地址 = 0x29a7af3

结论：

0 = 低字节

3 = 高字节