我在C#中有以下结构
unsafe public struct control
{
public int bSetComPort;
public int iComPortIndex;
public int iBaudRate;
public int iManufactoryID;
public byte btAddressOfCamera;
public int iCameraParam;
public byte PresetNum;
public byte PresetWaitTime;
public byte Group;
public byte AutoCruiseStatus;
public byte Channel;
public fixed byte Data[64];
}
我用来将它转换为字节数组[]的函数是
static byte[] structtobyte(object obj)
{
int len = Marshal.SizeOf(obj);
byte[] arr = new byte[len];
IntPtr ptr = Marshal.AllocHGlobal(len);
Marshal.StructureToPtr(obj, ptr, true);
Marshal.Copy(ptr, arr, 0, len);
Marshal.FreeHGlobal(ptr);
return arr;
}
当我编译它时给出
Type 'System.Byte[]' cannot be marshaled as an unmanaged structure; no meaningful size or offset can be computed.
可能是什么问题? 提前谢谢!
答案 0 :(得分:4)
SizeOf
不在数组上工作。请改用array.Length * Marshal.SizeOf(elementType)
。
答案 1 :(得分:-1)
您报告为编译错误的错误实际上是运行时错误(ArgumentException
)。如果您想使用structtobyte
将control
转换为byte[]
,则应该向该方法传递对control
的引用,而不是byte
数组({{1} }})。
byte[]