原文地址：http://blog.csdn.net/johnsuna/article/details/1742799
How is Grid Different from Table?
Table and Grid share some common functionality, but each is best suited for different scenarios.
(1)Grid derives from the Panel element, it defines a flexible grid area that consists of columns and rows.
Table derives from the Block element, and adheres to the common rules for containing a Block element. A Table element may be contained by any of the following elements: FlowDocument, TableCell, ListBoxItem, ListViewItem, Section, Floater, Figure.
(2) A Table is designed for use within flow content.
Grids are best used inside of forms (basically anywhere outside of flow content).
(3) Within a FlowDocument, Table supports flow content behaviors like pagination, column reflow, and content selection while a Grid does not.
(4)A Grid on the other hand is best used outside of a FlowDocument for many reasons including Grid adds elements based on a row and column index, Table does not.
(5)The Grid element allows layering of child content, allowing more than one element to exist within a single "cell."
Table does not support layering.
(6)Child elements of a Grid can be absolutely positioned relative to the area of their "cell" boundaries. Table does not support this feature.
(7)Finally, Grid also offers more flexible resizing behavior than Table. A Grid is lighter weight then a Table.