如何将C++结构数组编组到C#中

struct MyStruct {
    int id;
    char name[20];
};

extern "C" __declspec(dllexport) MyStruct* GetStructArray() {
    MyStruct* arr = new MyStruct[3];
    arr[0].id = 1;
    strcpy_s(arr[0].name, "John");
    arr[1].id = 2;
    strcpy_s(arr[1].name, "Jane");
    arr[2].id = 3;
    strcpy_s(arr[2].name, "Bob");
    return arr;
}

using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
public struct MyStruct {
    public int id;
    [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 20)]
    public string name;
}

class Program {
    [DllImport("your_cpp_dll.dll")]
    public static extern IntPtr GetStructArray();

    static void Main(string[] args) {
        IntPtr ptr = GetStructArray();
        MyStruct[] structArray = new MyStruct[3];

        for (int i = 0; i < 3; i++) {
            IntPtr currentPtr = new IntPtr(ptr.ToInt64() + i * Marshal.SizeOf<MyStruct>());
            structArray[i] = Marshal.PtrToStructure<MyStruct>(currentPtr);
        }

        foreach (MyStruct s in structArray) {
            Console.WriteLine("ID: " + s.id + ", Name: " + s.name);
        }
    }
}