public static List<RoadModel> getRoadInfoByDll()
{
int roadNum = 10;
ROAD_INFO[] infos = new ROAD_INFO[roadNum];
for (int i = 0; i < roadNum; i++)
{
infos[i] = new ROAD_INFO();
}
IntPtr[] ptArr = new IntPtr[1];
ptArr[0] = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(ROAD_INFO)) * roadNum); //分配包含两个元素的数组
IntPtr pt = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(ROAD_INFO)));
Marshal.Copy(ptArr, 0, pt, 1); //拷贝指针数组
getRoadInfo(pt, roadNum);
List<RoadModel> roadList = new List<RoadModel>();
for (int i = 0; i < roadNum; i++)
{
infos[i] = (ROAD_INFO)Marshal.PtrToStructure((IntPtr)(pt.ToInt32() + i * Marshal.SizeOf(typeof(ROAD_INFO))), typeof(ROAD_INFO));
RoadModel road = new RoadModel();
road.RoadID = infos[i].roadNum.ToString();
road.RoadID = infos[i].roadName;
roadList.Add(road);
}
return roadList;
}
public static bool setRoadInfoByDll(List<RoadModel> roadList)
{
int roadNum = roadList.Count;
ROAD_INFO[] infos = new ROAD_INFO[roadNum];
for (int i = 0; i < roadNum; i++)
{
infos[i] = new ROAD_INFO();
}
IntPtr[] ptArr = new IntPtr[1];
ptArr[0] = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(ROAD_INFO)) * roadNum); //分配包含两个元素的数组
IntPtr pt = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(ROAD_INFO)));
Marshal.Copy(ptArr, 0, pt, 1); //拷贝指针数组
bool result = getRoadInfo(pt, roadNum);
return result;
}