converting C++ into C#

[sakaesushi]

HI, i need help in converting C++ code to C#, below is the attacted code to be converted. thanks

int img1; 
TFacePosition FacePosition; 
FSDK_Initialize(""); 
FSDK_LoadImageFromFile(&img1, "test.jpg");
 FSDK_DetectFace(img1, &FacePosition); 
printf("face position: %d %d %d", FacePosition.xc, FacePosition.yc, FacePosition.angle);

but instead of loading image from file, i want to "load" my image from webcam that will be displayed at the picture box


And this

int img1; 
int DetectedCount; 
TFacePosition FaceArray[50]; 
FSDK_Initialize(""); 
FSDK_LoadImageFromFile(&img1, "test.jpg"); 
FSDK_DetectMultipleFaces(img1, &DetectedCount , FaceArray, sizeof(FaceArray)); 
for (i = 0; i < DetectedCount; i++) 
{ printf("face position: %d %d %d\n", FaceArray[i].xc, FaceArray[i].yc, FaceArray[i].angle); }

once again, thanks