The beauty of the Designer is that it lets you lay out your controls lovingly within your form, making sure everything lines up nicely, as shown in Figure 1.5.
Figure 1.5. Nicely Laid-Out Form at Ideal Size
But then someone resizes it, as shown in Figure 1.6.
Figure 1.6. Nicely Laid-Out Form Resized
The user isn't resizing the form to get more gray space but to make the controls bigger so that they will hold more data. For that to happen, the controls need to resize to take up the newly available space. You can do this manually ...