WPF notes (2.3 stackpanel) -- Layout

Stackpanel is used for small-scale typographical layout, such as the textbox and button in a local area.
The orientation attribute has two options: vertical and horizontal, which determine the layout direction.

All controls have the margin attribute, which is used to make the controls less crowded. The blank direction of margin varies with vertical and horizontal, of course, margin = "3, 3" means that there is a blank space in both directions.
The horizontalalignment attribute is used to adjust the Extended Direction of the control. The default value is stretch,That is, the number of places in the horizontal direction and the left, center, and right values are only located at the three positions in the horizontal direction according to the minimum placeholder value. The corresponding verticalignment attributes are similar.