" \r " is a carriage return and " \n " is a line-feed; the pair forms a Windows newline.
In Windows, a new line is denoted using “\r\n”, sometimes called a Carriage Return and Line Feed, or CRLF. Adding a new line in Java is as simple as including “\n” , “\r”, or “\r\n” at the end of our string.
You could do it easily using
File.AppendAllText("date.txt", DateTime.Now.ToString());
If you need newline
File.AppendAllText("date.txt",
DateTime.Now.ToString() + Environment.NewLine);
Anyway if you need your code do this:
TextWriter tw = new StreamWriter("date.txt", true);
with second parameter telling to append to file.
Check here StreamWriter syntax.
No new line:
File.AppendAllText("file.txt", DateTime.Now.ToString());
and then to get a new line after OK:
File.AppendAllText("file.txt", string.Format("{0}{1}", "OK", Environment.NewLine));
Why not do it with one method call:
File.AppendAllLines("file.txt", new[] { DateTime.Now.ToString() });
which will do the newline for you, and allow you to insert multiple lines at once if you want.
var Line = textBox1.Text + "," + textBox2.Text;
File.AppendAllText(@"C:\Documents\m2.txt", Line + Environment.NewLine);
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