Saving the items of a listbox to a text file

Question

How can I save the contents of my listbox items to a text file using a SaveFileDialog?

I also want to add additional information to the text file and also add a MessageBox saying saved when it's been successful.

Answer 1

        var saveFile = new SaveFileDialog();
        saveFile.Filter = "Text (*.txt)|*.txt";
        if (saveFile.ShowDialog() == System.Windows.Forms.DialogResult.OK)
        {
            using (var sw = new StreamWriter(saveFile.FileName, false))
                foreach (var item in listBox1.Items)
                    sw.Write(item.ToString() + Environment.NewLine);
            MessageBox.Show("Success");
        }

Also take note the StreamWriter has a Type of Encoding.

Answer 2

this should do it.

private void button1_Click(object sender, EventArgs e)
{
    OpenFileDialog f = new OpenFileDialog();

    f.ShowDialog();                 

    ListBox l = new ListBox();
    l.Items.Add("one");
    l.Items.Add("two");
    l.Items.Add("three");
    l.Items.Add("four");

    string textout = "";

    // assume the li is a string - will fail if not
    foreach (string li in l.Items)
    {
        textout = textout + li + Environment.NewLine;
    }

    textout = "extra stuff at the top" + Environment.NewLine + textout + "extra stuff at the bottom";
    File.WriteAllText(f.FileName, textout);

    MessageBox.Show("all saved!");
}