c# - 如何从 byte[] 中读取整数

Question

我有一个字节数组，我想从这个数组中读取一个整数。我该怎么做？

像这样:

 int i;

 tab = new byte[32];

 i = readint(tab,0,3); // i = int from tab[0] to tab[3] (int = 4 bytes?)

 i = readint(tab,4,7);

等...

Answer 1

byte[] bytes = { 0, 0, 0, 25 };

// If the system architecture is little-endian (that is, little end first),
// reverse the byte array.
if (BitConverter.IsLittleEndian)
    Array.Reverse(bytes);

int i = BitConverter.ToInt32(bytes, 0);
Console.WriteLine("int: {0}", i);

引用:How to: Convert a byte Array to an int