/// <summary>
                /// 根据期望的表大小向DataTable填充空行。
                /// </summary>
                /// <param name="dt">数据表实例。</param>
                /// <param name="dataTableSize">期望的数据表大小。</param>
                public static void FillBlankRow(DataTable dt, int dataTableSize)
                {
                    if (dataTableSize < 0)
                        throw new ArgumentOutOfRangeException("方法参数dataTableSize不能是负数。");
                    if (dt.Rows.Count < dataTableSize)
                    {
                        int additionCount = dataTableSize - dt.Rows.Count;
                        for (int i = 0; i < additionCount; i++)
                        {
                            DataRow row = dt.NewRow();
                            dt.Rows.Add(row);
                        }
                    }
                }