What is the way to convert 'mm/dd/yyyy' to SQL Server DateTime Format using C#..?

could you please explain it,

as per my understanding if you have mm/dd/yyy date with data type string then you just need to convert it to c# datetime data type and then just pass it through your procedure or yourquery

Simply create a custom method like this

/// <summary>

        /// Converts string like "mm/dd/yyyy hh:mm" to Sql Date format

        /// </summary>

        /// <param name="date"></param>

        /// <returns></returns>

        public static DateTime ConvertStringtoDateTime(string date)

        {

            string sqldateformat = String.Format("{0}-{1}-{2} {3}", date.Substring(6, 4), date.Substring(3, 2), date.Substring(0, 2), date.Substring(11, 5));

            DateTime dt = Convert.ToDateTime(sqldateformat);

            return dt;

        }

This can be easily achieved by 

date.ToString("MM/dd/yyyy");

Easiest way would be using the inbuilt ToString function