private void openToolStripMenuItem_Click(object sender, EventArgs e)
        {
            string         text       = string.Empty;
            OpenFileDialog OpenWindow = new OpenFileDialog();

            if (OpenWindow.ShowDialog() == DialogResult.OK)
            {
                text = Fajlok.Open(OpenWindow.FileName);
                richTextBox1.Text = text;
            }
            else
            {
                MessageBox.Show("Not good file");
            }
        }
        private void saveToolStripMenuItem_Click(object sender, EventArgs e)
        {
            string         text       = richTextBox1.Text;
            SaveFileDialog SaveWindow = new SaveFileDialog();

            try
            {
                SaveWindow.ShowDialog();
                Fajlok.Save(SaveWindow.FileName, text);
            }
            catch (Exception ex)
            {
                MessageBox.Show("Error:" + ex.ToString());
            }
        }