C# byte[]、struct、intptr等的相互转换

1.struct byte[]互相转换

//struct转换为byte[]
public static byte[] StructToBytes(object structObj)
{
int size = Marshal.SizeOf(structObj);
IntPtr buffer = Marshal.AllocHGlobal(size);
try
{
Marshal.StructureToPtr(structObj, buffer, false);
byte[] bytes = new byte[size];
Marshal.Copy(buffer, bytes, 0, size);
return bytes;
}
finally
{
Marshal.FreeHGlobal(buffer);
}
}

//byte[]转换为struct
public static object BytesToStruct(byte[] bytes, Type type)
{
int size = Marshal.SizeOf(type);
IntPtr buffer = Marshal.AllocHGlobal(size);
try
{
Marshal.Copy(bytes, 0, buffer, size);
return Marshal.PtrToStructure(buffer, type);
}
finally
{
Marshal.FreeHGlobal(buffer);
}
}

//IntPtr转byte[]

IntPtr y;//初始化 略
byte[] ys = new byte[yLength];
Marshal.Copy(y, ys, 0, yLength);

//byte[]转换为Intptr
public static Intptr BytesToIntptr(byte[] bytes)
{
int size = bytes.Length;
IntPtr buffer = Marshal.AllocHGlobal(size);
try
{
Marshal.Copy(bytes, 0, buffer, size);
return buffer;
}
finally
{
Marshal.FreeHGlobal(buffer);
}
}