/// <summary>
        /// 返回考试分析图
        /// </summary>
        /// <returns></returns>
        public FileResult ExamChart()
        {
            string sKey="考试报表Models";
            Chart chart = null;
            try
            {
                /* 返回存在Session中的考试报表Models */
                ExamReportModels examReportModels = (ExamReportModels)Session[sKey];

                LKExamChart lKChart = new LKExamChart();
                chart = lKChart.Get考试分析图形(examReportModels);
                return lKChart.Get考试分析FileResult(chart);
            }
            catch (Exception)
            {
                return null;
            }
            finally {
                chart.Dispose();
                chart = null;
                Session[sKey] = null;
                Session.Clear();
            }
        }
        /// <summary>
        /// 导出考试报表到Word,将ExamReportModels的考试报表导出到Word文件
        /// </summary>
        /// <param name="examReportModels">考试报表Models</param>
        /// <param name="sFileName">文件名称,考试名称</param>
        public void 导出考试报表到Word(ExamReportModels examReportModels, string sFileName)
        {
            LKExamChart lKChart = new LKExamChart();
            lKChart.Save考试分析Chart(examReportModels);

            HttpRequest httpRequest = HttpContext.Current.Request;
            string s内容 = "";
            s内容 += "<link href=\"" + httpRequest.Url.Scheme + "://" + httpRequest.Url.Authority + "/Content/StyleSheet/Global.css\" rel=\"stylesheet\" type=\"text/css\" />";
            s内容 += @"<style>
                        table{width:600px;}
                        tr{height:25px;}
                        td{text-align: center;border: #abc0db 1px solid;}
                        h1{font-size:20px;}
                        h3{font-size:14px;}
                        h1,div.detailsInfo{text-align: center;}
                        div.manage{margin-top:30px;}
                    </style>";
            s内容 += AnalysisExtensions.ExamReport标题(examReportModels.考试设置);
            s内容 += AnalysisExtensions.ExamReport图形WORD版(examReportModels);
            s内容 += AnalysisExtensions.ExamReport表格(examReportModels.考试分析);
            s内容 += AnalysisExtensions.ExamReport情况(examReportModels.DataTable);
            s内容 += AnalysisExtensions.ExamReport管理(examReportModels.考试分析);

            //导出Word
            导出BODY到WORD(s内容, sFileName);
        }