WPF GRID to GRID drag and drop

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WPF

I am trying to find a way to drag and drop between two grids(NOT datagrids).

I have one grid control with 24 columns and 24 rows. (Grid Look Like This => http://s21.postimg.org/q3h2kja7b/Grid.jpg[^])

Second Grid control with 5 columns and 5 rows.

I want to Drag 5*5 Grid Over 24*24 Grid on any Cell of this 24*24 Grid.

and Just Highlights It on 24*24 Grid.

Please Help me...