C#

extern "C" __declspec(dllexport) BOOL InitGL(HDC * hdc,
                                              HGLRC * hglrc)
{   
    BOOL retval = FALSE;    
    PIXELFORMATDESCRIPTOR pfd;
    int format;    
    ZeroMemory(&pfd, sizeof(pfd));
    pfd.nSize = sizeof(pfd);
    pfd.nVersion = 1;
    pfd.dwFlags = PFD_DRAW_TO_BITMAP | PFD_SUPPORT_OPENGL | PFD_SUPPORT_GDI;
    pfd.iPixelType = PFD_TYPE_RGBA;
    pfd.cColorBits = 24;
    pfd.cDepthBits = 16;
    pfd.iLayerType = PFD_MAIN_PLANE;	    
    format = ChoosePixelFormat(*hdc, &pfd );
    retval = SetPixelFormat(*hdc, format, &pfd);    
    *hglrc = wglCreateContext(*hdc);    
    return retval;
}

try
{
    Graphics graphics = System.Drawing.Graphics.FromImage(_bitmap);
    IntPtr hDC = graphics.GetHdc();
    // If we have not initialized OpenGL, do it now.
    if (!native_init)
    {
        NativeMethods.InitGL(hDC, out this._hglrc);
        native_init = true;
    }
}
finally 
{
}

try
{
    BitmapData bitmapData = _bitmap.LockBits(
                new Rectangle(0, 0, _bitmap.Width, _bitmap.Height),
                ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb);
    Graphics graphics = System.Drawing.Graphics.FromImage(_bitmap);
    IntPtr hDC = graphics.GetHdc();
    // If we have not initialized OpenGL, do it now.
    if (!native_init)
    {
        NativeMethods.InitGL(hDC, out this._hglrc);
        native_init = true;
    }
}
finally 
{
    _bitmap.UnlockBits(bitmapData);
}

var viewModel = new StoreIndexViewModel {
                NumberOfGenres = genres.Count(),
                Genres = genres};