//从XML文件读取并检测文件中的成员是否存在
            /// <summary>
            /// 从项目文件中读取数据,并打开相应的Excel程序与工作簿
            /// </summary>
            /// <remarks></remarks>
            public void LoadFromXmlFile()
            {
                //载入文档
                XmlDocument xmlDoc = new XmlDocument();

                xmlDoc.Load(this.P_FilePath);
                //
                clsData_FileContents FC = new clsData_FileContents();
                XMLNode eleRoot         = xmlDoc.SelectSingleNode(System.Convert.ToString(My.Settings.Default.ProjectName));
                //这里可以尝试用GetElementById
                XmlElement Node_DataBase = eleRoot.SelectSingleNode(DataBasePath.Nd1_DataBasePaths);

                if (Node_DataBase == null)
                {
                    return;
                }
                // ---------------------- 读取文档 ------------------------
                // ---------------------- 读取文档 ------------------------

                XmlNodeList eleWkbks = Node_DataBase.GetElementsByTagName(DataBasePath.Nd2_WorkbooksInProject);

                foreach (XmlElement eleWkbk in eleWkbks)
                {
                    string   strWkbkPath = eleWkbk.InnerText;
                    Workbook wkbk        = ExcelFunction.MatchOpenedWkbk(wkbkPath: ref strWkbkPath, Application: ref this.F_Application, OpenIfNotOpened: true);
                    if (wkbk != null)
                    {
                        FC.lstWkbks.Add(wkbk);
                    }
                    else                     //此工作簿不存在,或者是没有成功赋值
                    {
                        this.F_blnFileValid = false;
                        this.F_lstErrorMessage.Add("The Specified Workbook is not found : " + strWkbkPath);
                    }
                }

                // ---------------- 施工进度工作表
                bool        blnNodeForWorksheetValidated = false;
                XmlNodeList eleSheetsProgress            = Node_DataBase.GetElementsByTagName(DataBasePath.Nd2_Progress);

                foreach (XmlElement eleSheetProgress in eleSheetsProgress)
                {
                    Worksheet shtProgress = ValidateNodeForWorksheet(eleSheetProgress, FC, ref blnNodeForWorksheetValidated);
                    if (blnNodeForWorksheetValidated)
                    {
                        FC.lstSheets_Progress.Add(shtProgress);
                    }
                }

                // ---------------- 开挖平面图工作表

                XmlNodeList eleSheetPlanView = Node_DataBase.GetElementsByTagName(DataBasePath.Nd2_PlanView);
                var         shtPlanView      = ValidateNodeForWorksheet((System.Xml.XmlElement)(eleSheetPlanView.Item(0)), FC, ref blnNodeForWorksheetValidated);

                FC.Sheet_PlanView = shtPlanView;

                // ---------------- 开挖剖面图工作表

                XmlNodeList eleSheetSectionalView = Node_DataBase.GetElementsByTagName(DataBasePath.Nd2_SectionalView);
                Worksheet   shtSectionalView      = ValidateNodeForWorksheet((System.Xml.XmlElement)(eleSheetSectionalView.Item(0)), FC, ref blnNodeForWorksheetValidated);

                FC.Sheet_Elevation = shtSectionalView;

                // ---------------- 测点坐标工作表

                XmlNodeList eleSheetPointCoordinates = Node_DataBase.GetElementsByTagName(DataBasePath.Nd2_PointCoordinates);
                Worksheet   shtPoint = ValidateNodeForWorksheet((System.Xml.XmlElement)(eleSheetPointCoordinates.Item(0)), FC, ref blnNodeForWorksheetValidated);

                FC.Sheet_PointCoordinates = shtPoint;

                // ---------------- 开挖工况工作表

                XmlNodeList eleWorkingStage = Node_DataBase.GetElementsByTagName(DataBasePath.Nd2_WorkingStage);
                Worksheet   shtWorkingStage = ValidateNodeForWorksheet((System.Xml.XmlElement)(eleWorkingStage.Item(0)), FC, ref blnNodeForWorksheetValidated);

                FC.Sheet_WorkingStage = shtWorkingStage;
                //
                this.P_FileContents = FC;
                //刷新主程序界面显示
                APPLICATION_MAINFORM.MainForm.MainUI_ProjectOpened();
            }