Hi Mehdi, 

Congrats on the nice solution. 

I also used it for my project and it works as a charm! 

Only one small extra addition: 

In the methods GetNormal and GetUpVector the cases for Fore and Back where missed, so this can be added in these methods. 

private static Vector3D GetNormal(eCameraViews view)
{
switch (view)
{
case eCameraViews.Top: return CameraViews.StandardViews.Normals.Top;
case eCameraViews.Bottom: return CameraViews.StandardViews.Normals.Bottom;
case eCameraViews.Left: return CameraViews.StandardViews.Normals.Left;
case eCameraViews.Right: return CameraViews.StandardViews.Normals.Right;
case eCameraViews.Fore: return CameraViews.StandardViews.Normals.Fore;
case eCameraViews.Back: return CameraViews.StandardViews.Normals.Back;
case eCameraViews.Isometric_PPP: return CameraViews.IsometricViews.Normals.PPP;
case eCameraViews.Isometric_MPP: return CameraViews.IsometricViews.Normals.MPP;
case eCameraViews.Isometric_PMP: return CameraViews.IsometricViews.Normals.PMP;
case eCameraViews.Isometric_MMP: return CameraViews.IsometricViews.Normals.MMP;
default:
throw new NotSupportedException();
}
}

private static Vector3D GetUpVector(eCameraViews view)
{
switch (view)
{
case eCameraViews.Top: return CameraViews.StandardViews.UpVectors.Top;
case eCameraViews.Bottom: return CameraViews.StandardViews.UpVectors.Bottom;
case eCameraViews.Left: return CameraViews.StandardViews.UpVectors.Left;
case eCameraViews.Right: return CameraViews.StandardViews.UpVectors.Right;
case eCameraViews.Fore: return CameraViews.StandardViews.UpVectors.Fore;
case eCameraViews.Back: return CameraViews.StandardViews.UpVectors.Back;
case eCameraViews.Isometric_PPP: return CameraViews.IsometricViews.UpVectors.PPP;
case eCameraViews.Isometric_MPP: return CameraViews.IsometricViews.UpVectors.MPP;
case eCameraViews.Isometric_PMP: return CameraViews.IsometricViews.UpVectors.PMP;
case eCameraViews.Isometric_MMP: return CameraViews.IsometricViews.UpVectors.MMP;
default:
throw new NotSupportedException();
}
}

Kind regards, 
Joachim