Question

I’m trying to modify the hosts file ( so i add the lines to it ) , host file which is on c:\windows\system32\drivers\etc\

I’ve added a dataGridView with two columns in my form ( URL and RedirectTo ), now it looks something like this :

what i want to do is to read the current value of dataGrid and append them to a the hosts file, so the text file will look like this :

![enter image description here][2]

How to access the columns values and read them in order to append them to the hosts file ( End of file ) in the following format :

www.algerie-actualites.com       www.monde-presse.com
algerie-actudz.com/              www.monde-presse.com

(I’m not using any DataSet / Database to read data from, the user may type these web addresses in the DataGridView!!)

Any help would be highly appreciated.

Answer 1

Try this approach:

var lines = grid.Rows.Cast<DataGridViewRow>()
            .Select(r => String.Join("\t", r.Cells.Cast<DataGridViewCell>()
            .Select(c => c.Value)) + Environment.NewLine);
System.IO.File.AppendAllLines(path, lines);