how to save 5 textbox values in notepad with comma for per textbox values?

string textBoxesValues = "TextBox1.Text" + "," + "TextBox2.Text" + "," + "TextBox3.Text" + "," + "TextBox4.Text" + "," + "TextBox5.Text";
            StreamWriter writer = new StreamWriter("FilePath where you want to save e.g D:\\New Folder\abc.text", true);    //true if you want to append text
            writer.WriteLine(textBoxesValues);
            writer.Flush();
            writer.Close();
            writer.Dispose();
            //or try this
            File.AppendAllText("FilePath where you want to save e.g D:\\New Folder\abc.text", textBoxesValues);