我在 dll 中有一个以下类型的结构。但是当我调试它时，我收到以下异常。请帮助解决这个问题。
Cannot marshal field 'id' of type 'RCMMMResult_S': The type definition of this field has layout information but has an invalid managed/unmanaged type combination or is unmarshalable.
[StructLayout(LayoutKind.Sequential)]
public struct RCMMMResult_S
{
public RCMMMResultID_s id;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]
public byte[] value;
// [MarshalAs(UnmanagedType.ByValArray, SizeConst = 1)]
public byte status;
public RCMMMResult_S(bool init = true)
{
id = new RCMMMResultID_s();
value = new byte[4];
status = 0;
}
} ;
[StructLayout(LayoutKind.Sequential, Pack = 1)]
[Serializable]
public struct RCMMMResultID_s
{
[MarshalAs(UnmanagedType.I1, SizeConst = 1)]
public byte analyte_id;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 1)]
public byte unit_code;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 2)]
public byte[] variant;
public RCMMMResultID_s(bool init = true)
{
analyte_id = 0;
unit_code = 0;
variant = new byte[2];
}
} ;
最佳答案
问题出在这里:
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 1)]
public byte unit_code;
这是一个单字节，不能用作 by-val 数组。 I1 可以正常工作。
关于c# - 无法编码结构的字段，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/49531585/