public void Report() { //const string format = "{0,-25} {1,-25} {2,-25} {3,-25} {4,-25}"; Berries berries1 = new Berries("BlueBerries", 12, 5, "AAA Early", "July"); //now you can modify the result1 string to string result1 = berries1.ToString(); //string.Format(format, berries1 + " "); textBox1.AppendText(result1 + Environment.NewLine); Berries berries2 = new Berries("Strawberry", 12, 5, "FrostStar", "December"); string result = berries1.ToString(); //string.Format(format, berries2 + " "); textBox1.AppendText(result + Environment.NewLine); }