VS 2008 HELPP HELPP Saving Data from DatagridView and from some textboxes to .txt or .in file

I want to save data from datagrid view and from some textboxes to .txt file or to .in file because the fiscal printer it reads data from .in file

i want to take data only frome somce colums example

column 1 where item name is
column 2 where item price is
column3 where itemcount is
column 4 where total price is
and column 5 whre tax ID is the tax id is A or B

and frome the textboxes where total is and where tax A is and where Tax B is and another textbox where total Tax is.


In the text should lock like this

ItemCount * ItemPrice
ItemName TotalPrice /Tax ID

example:

2.000 x 5.00$
Milka 10.00$ A 'With tax A
3.000 x 6.00$
Nestle 12.00$B ' with tax B
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Total 22.00$ from textbox
Tax A xx,00
Tax B xx,00 'xx with be the amount of tax
Total Tax xx,00
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