类型转换

  public static float Str2Money(string value)
        {
            if (string.IsNullOrEmpty(value))
            {
                return 0f;
            }
            else
            {
                value = value.Replace(",", "");
                return float.Parse(value);
            }
        }

        /// <summary>
        ///
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        public static string Money2Str(float value)
        {
            return value.ToString("N");
        }

        /// <summary>
        ///
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        public static DateTime Str2Date(string value)
        {
            if (string.IsNullOrEmpty(value))
                return DateTime.MinValue;
            else
            {
                DateTimeFormatInfo dtFormat = new DateTimeFormatInfo();
                dtFormat.ShortDatePattern = "dd-MM-yy";
                return Convert.ToDateTime(value, dtFormat);
            }
        }

        public static string Date2String(DateTime value)
        {
            if (value == DateTime.MinValue)
                return string.Empty;
            else
                return value.ToString("dd-MM-yy");
        }

        /// <summary>
        ///
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        public static int Str2Int(string value)
        {
            if (string.IsNullOrEmpty(value))
                return 0;
            else
                return int.Parse(value);
        }

        /// <summary>
        ///
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        public static Guid? Object2Guid(object value)
        {
            if (value == System.DBNull.Value)
            {
                return null;
            }
            else
            {
                return new Guid(value.ToString());
            }
        }

        /// <summary>
        ///
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        public static string Object2Sting(object value)
        {
            if (value == System.DBNull.Value)
            {
                return string.Empty;
            }
            else
            {
                return value.ToString();
            }
        }