Layouts and its differentiation in windows phone 8?

Question

I often see while developing phone app in grid they using Asterisk(*) and Auto , i cant identify its use any people pls kindly give some suggestions....

Answer 1

Windows Phone provides a flexible layout system that enables you to specify how controls are positioned on the screen.

i)Absolute layout(Canvas): you arrange child elements in a layout panel by specifying their exact locations relative to their parent element

ii)Dynamic Layout(Stack Panel,Grid): To use automatic or proportional sizing, you must assign special values to the Height and Width properties.