Preventing moving of a control out of its container

Question

This question is related to another question of mine which can be found here can be found here. I wanted to move a PictureBox within its parent container which

Answer 1

you can move the box unconditionally (no testing of the current location) and have a limitation for your new location:

int nx = Math.Min(Math.Max(pictureBoxPackageView.Left + (e.X -start.X),0),pictureBoxPackageView.Parent.Width-pictureBoxPackageView.Width);
int ny = Math.Min(Math.Max(pictureBoxPackageView.Top + (e.Y -start.Y),0),pictureBoxPackageView.Parent.Height-pictureBoxPackageView.Height);

pictureBoxPackageView.Location = new Point(nx,ny);