序列化事件后检查值是否合法

/// <summary>
    /// 刮刮卡参数
    /// </summary>
    [DataContract]
    public sealed class GetGuaGuaCardReq
    {
        /// <summary>
        /// 客户ID
        /// </summary>
        [DataMember]
        public int CustomerId { get; set; }

        /// <summary>
        /// Gets or sets the index of the page.
        /// </summary>
        [DataMember]
        public int PageIndex { get; set; }

        /// <summary>
        /// Gets or sets the size of the page.
        /// </summary>
        [DataMember]
        public int PageSize { get; set; }

        /// <summary>
        /// Called when [deserialized].
        /// </summary>
        /// <param name="context">The context.</param>
        [OnDeserialized]
        private void OnDeserialized(StreamingContext context)
        {
            if (this.PageIndex == 0)
            {
                this.PageIndex = 1;
            }
            if (this.PageSize == 0)
            {
                this.PageSize = 15;
            }
        }
    }

using System.Runtime.Serialization;