thanks Guys,
Sarah is right. I changed some setting in Excel to edit 2003 xls file. These setting caused the exception. Don't know which one, but after restore, everything is fine.
again, appreciate a lot.
thanks Guys,
Sarah is right. I changed some setting in Excel to edit 2003 xls file. These setting caused the exception. Don't know which one, but after restore, everything is fine.
again, appreciate a lot.