Date Time C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data.SqlTypes;
public class CommonUtility
{
    public static string FormatedDateTimeString(DateTime dateTime)
        {
            if (dateTime == SqlDateTime.MinValue.Value)
                return string.Empty;
            else
                return .ToString("dd/MM/yyyy hh:mm");
        }
}