1、託管**向非託管**傳遞字串
非託管api:
extern "c" __declspec(dllexport)
int_cdeclwritedatatofcsfile(char* filepath);
託管:
[dllimport
(_business.dll, entrypoint =
"writedatatofcsfile"
, callingconvention =
callingconvention
.cdecl)]
public
extern
static
bool
writefcs(
string
filepath,
string
samplelabel);
2、託管**向非託管**傳送陣列
非託管api:
extern "c" __declspec(dllexport)
int_cdecl sendcommand(short comcode,shortdstcode,short srccode,floatparam,int nsize);
託管:[dllimport(_dllname,entrypoint ="sendcommand",callingconvention =callingconvention.cdecl)]
public
static
extern
int sendcommand(
short cmdcode,
short dstdevicecode,
shortsrcdevicecode,
float params,
int nsize);
3、非託管**通過引數向託管**傳遞一般型別值和陣列
非託管api:
extern
"c"__declspec
(dllexport)
int_cdeclgetharddeviceinfo(short* order,float** ordercontent,int*nsize);//引數1返回短整型值,引數2返回浮點型陣列,引數3返回整形值,該值表示引數2陣列大小
託管:[dllimport(_dllname,entrypoint ="getharddeviceinfo",callingconvention=callingconvention.cdecl)]
public
static
extern
boolgetresponse(
refshortresponsecode,
outintptrparameters,
refintnsize);
//需要將資料從非託管記憶體指標複製到託管字元陣列,關鍵**如下:
if (nsize >= 0)
4、非託管**通過返回值想託管**傳遞陣列
非託管api:
extern
"c"__declspec(
dllexport)
int*
_cdecl getthearray(
int*nsize);
託管:[dllimport(_dllname,entrypoint ="getthearray",callingconvention =callingconvention.cdecl)]
unsafe
public
static
extern
int* getthearray(ref
int nsize);
使用方法舉例:
unsafe
} }
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