DataTable.Import("path of the file")

DataTable.ImportSheet("filepath","sheetsource","sheetDest")

Sheetsource:index or name of the sheet in the file which u

want to import. index begins vth 1.

SheetDest: index or name of the sheet in the datatable

which u want to replace vth Sheetsource.Index begins vth 1.

ex:

Datatable.importsheet("c:\name.xls",1,"name")