import and export to/from excel from/to grid

Does import and export of grid data to excel is supported by active widgets.
if yes ,please provide some sample example.

You can save excel data as CSV file, which can be loaded into the grid, see examples/grid data - csv text file. You can also select rows or a cell range and copy/paste them back to excel. If you need to export full dataset - this has to be done on the server side.