Help with using SteamWriter

Hey guys,

I'm using steamwriter to write X and Y coordinates on mouse click to a text file. It does work but when I click more than once the coordinates in the text file are overwritten with the new coordinates. This is probably a simple question but how do I get it to write all new coordinates to a new line?

Here's my code:

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.IO;



namespace WindowsFormsApplication1

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }



        private void Form1_MouseClick(object sender, MouseEventArgs e)

        {

            string path = @"C:\coordinates.txt";

            StreamWriter sw = new StreamWriter(path);

            string bufferOne = ("X = " + e.X + ", Y = " + e.Y);

            sw.WriteLine(bufferOne);

            sw.Close();

            sw.Dispose();
          
        }

    }

}

Cheers!

1 Reply

Know the answer? Post it — somebody with the same question will find it here.

Sam Hobbs16y ago
Open the file once and don't close it until the form is closed. In other words, don't do "new StreamWriter" each time you do a WriteLine and don't do the Close or Dispose each time you do a WriteLine. Alternatively, insted of:

StreamWriter sw = new StreamWriter(path);

Use:

StreamWriter sw = new StreamWriter(path, true);