How to Convert date into MM/DD/YY format in C#

textbox1.text = System.DateTime.Today.ToShortDateString();

DateTime.Today.ToString("MM/dd/yy")

textbox1.text = System.DateTime.Today.ToString("MM/dd/yy");

IFormatProvider yyyymmddFormat = new System.Globalization.CultureInfo(String.Empty, false);
        return date.ToString("MM/dd/yy", yyyymmddFormat);