private void button1_Click(object sender, EventArgs e)
{
if (is_selected)
{
SaveFileDialog saveFileDialog1 = new SaveFileDialog();
saveFileDialog1.Filter = "Text|*.txt";
saveFileDialog1.Title = "Save as Text File";
saveFileDialog1.ShowDialog();
if (saveFileDialog1.FileName != "")
{
f.Save(saveFileDialog1.FileName);
}
}
}
