C++/CLI Exception: "Parameter is not valid" constructing a Bitmap

Question

I'm trying to display a cv::Mat object (opencv) in Winform PictureBox:

void Show(cv::Mat& picture, PictureBox^ box) {
    cv::Mat pic;
    cv::resize(picture, pic, cv::Size(250, 250)); //picturebox size = 250, 250
    box->Image = gcnew System::Drawing::Bitmap(
        pic.cols, pic.rows, pic.step,
        System::Drawing::Imaging::PixelFormat::Format24bppRgb,
        (System::IntPtr)pic.data
    );
    box->Refresh();
}

The constructor of Bitmap throw exception: "Parameter is not valid". I found a similar problem from: C# "Parameter is not valid." creating new bitmap It is answered that the Bitmap is comsuming too much space. However my Bitmap is only 250x250 or ~180kB of memory. I don't think 180kB is too much.

I tried reducing the picture size to 200x200 and it works. But that is too small for my need. And this proves that the problem must be the size of picture.