Question

This cide is meant to take the text from a rich text box (that is a list of users separated by commas) and then write each entry on its own line.

However, it does not. What have I done wrong?

if (chkWhiteList.Checked)
        {
            string rawUser = rtboxWhiteList.Text;
            string[] list = rawUser.Split(new char[] { ',' });

            foreach (string user in list)
            {
                using (StreamWriter whiteList = new StreamWriter(cleanDir + @"\white-list.txt"))
                {
                    whiteList.WriteLine(String.Format("{0}\r\n", user));
                }
            }
        }

Answer 1

try this….

    if (chkWhiteList.Checked)
    {
        string rawUser = rtboxWhiteList.Text;
        string[] list = rawUser.Split(new char[] { ',' });

        using (StreamWriter whiteList = new StreamWriter(cleanDir + @"\white-list.txt"))
            {
                foreach (string user in list)
                {
                     whiteList.WriteLine(String.Format("{0}\r\n", user));
                }

            }
    }