Not writing, but not returning errors

        private void button1_Click(object sender, EventArgs e)
        {
            try
            {

                string baseDir = AppDomain.CurrentDomain.BaseDirectory;

                string currentDirectory = Directory.GetCurrentDirectory();
                string filePath = Path.Combine(currentDirectory, "Dialog.txt");
                MessageBox.Show(filePath);


                using (StreamWriter writer = new StreamWriter(filePath))
                {
                    writer.Write("Yes");
                }

            }
            catch (Exception ex)
            {
                MessageBox.Show($"{ex}");
            }

            this.Close();
        }