你可以尝试使用序列化(marshalling):
将你的类声明为Sequential类型(请注意,你需要使用
Pack = 1
):
[StructLayout(LayoutKind.Sequential, Pack = 1)]
class Data
{
public int _int1;
public int _int2;
public short _short1;
public long _long1;
}
将字节序列组合成 Data 类的一个新实例:
var bytes = new byte[] { 1, 0, 0, 0, 2, 0, 0, 0, 3, 0, 4, 0, 0, 0, 0, 0, 0, 0 };
GCHandle gcHandle = GCHandle.Alloc(bytes, GCHandleType.Pinned);
var data = (Data)Marshal.PtrToStructure(gcHandle.AddrOfPinnedObject(), typeof(Data));
gcHandle.Free();
Console.WriteLine(data._int1);
Console.WriteLine(data._int2);
Console.WriteLine(data._short1);
Console.WriteLine(data._long1);
为了方便,您可以在Data类中编写一个静态方法来进行转换:
[StructLayout(LayoutKind.Sequential, Pack = 1)]
class Data
{
public int _int1;
public int _int2;
public short _short1;
public long _long1;
public static Data FromBytes(byte[] bytes)
{
GCHandle gcHandle = GCHandle.Alloc(bytes, GCHandleType.Pinned);
var data = (Data)Marshal.PtrToStructure(gcHandle.AddrOfPinnedObject(), typeof(Data));
gcHandle.Free();
return data;
}
}
...
var data = Data.FromBytes(new byte[] {1, 0, 0, 0, 2, 0, 0, 0, 3, 0, 4, 0, 0, 0, 0, 0, 0, 0});
如果你真的想要,你可以编写一个显式运算符来将字节数组转换为所需语法。不过我建议使用 Data.FromBytes()
,在我看来这会更加清晰易懂。
不过,为了完整起见:
[StructLayout(LayoutKind.Sequential, Pack = 1)]
class Data
{
public int _int1;
public int _int2;
public short _short1;
public long _long1;
public static explicit operator Data(byte[] bytes)
{
GCHandle gcHandle = GCHandle.Alloc(bytes, GCHandleType.Pinned);
var data = (Data)Marshal.PtrToStructure(gcHandle.AddrOfPinnedObject(), typeof(Data));
gcHandle.Free();
return data;
}
}
...
var data = (Data)new byte[] {1, 0, 0, 0, 2, 0, 0, 0, 3, 0, 4, 0, 0, 0, 0, 0, 0, 0};
public static explicit operator Data(Byte[] source) {...}
,但序列化是更好的解决方案。 - Dmitry Bychenko