注意： - 问题涉及ASP.NET和C＃。
我有3个功能
加载页面时调用第一个函数。当用户在页面上进行更改并且按下btn（GetData）时，第二个函数被调用，其中我设置了将搜索条件数据保存为GridData对象的会话变量。第三个函数由第二个函数调用，以将数据作为GridData对象获取，其中GridData是用户定义的类。稍后在调用函数中，它将转换为json对象，用于呈现网格表（jqgrid）。
问题： - 我们维护会话以便于临时搜索条件持有者，当目标用户在同一模块中从一个页面导航到另一个页面时，我们使用该临时搜索条件持有者。在我的代码中，我只在用户按下GetData时才设置Session变量，根据当前的要求，我必须更改硬编码以更改从特定页面的会话中获得的数据。这样，会话数据就会自动更改。我无法弄清楚原因。请帮忙。
这是代码： -
[System.Web.Services.WebMethod]
public static string GetDataBySearchCriteria(int ReportID) // called when page is loaded
{
if (SessionVariables.RoleID == 0)
{
return "null";
}
try
{
SetProperties(ReportID);
if (!CheckAuthorization(ReportID)) // write ! before statement after testing if its not written
{
return "null";
}
else
{
#region else part
HttpContext.Current.Session["ReportID"] = ReportID;
if (HttpContext.Current.Session["SalesUserSession"] != null)
{
SetProperties(ReportID);
GridData gd = new GridData();
gd = HttpContext.Current.Session["SalesUserSession"] as GridData;
if (pagetitle.ToLower() == "top referring practices")
{
gd.RowArea = "Referring Practice";
gd.order = "Month13@desc";
gd.SelectedCpt = "";
gd.SelectedLocation = "";
gd.SelectedModality = "";
gd.SelectedReferringPractice = "";
gd.SelectedPhysicians = "";
//gd.direction = "desc";
}
else if (pagetitle.ToLower() == "top referring physicians")
{
gd.RowArea = "Physician";
gd.order = "Month13@desc";
gd.SelectedCpt = "";
gd.SelectedLocation = "";
gd.SelectedModality = "";
gd.SelectedReferringPractice = "";
gd.SelectedPhysicians = "";
//gd.direction = "desc";
}
JavaScriptSerializer serializer = new JavaScriptSerializer();
return serializer.Serialize(GetGridData(isVolume: gd.IsVolume, pageNumber: 1, pageSize: gd.PageSize, rowArea: gd.RowArea, cpt: gd.SelectedCpt, referringPhysician: gd.SelectedPhysicians, referringPractice: gd.SelectedReferringPractice, speciality: gd.SelectedSpeciality, modalityFilter: gd.SelectedModality, locationFilter: gd.SelectedLocation, practice: gd.SelectedPractice,order:gd.order,orderBy:gd.orderBy,direction:gd.direction,orderBySummary:gd.orderBySummary,OrderBySummaryCol:gd.orderBySummaryCol,ShowSubTotalForAllGroup: gd.ShowSubTotalForAllGroup));//,direction:gd.direction,orderBySummary:"",OrderBySummaryCol:""));
}
else
{
SqlParameter[] parameters = new SqlParameter[3]; // Error Line
parameters[0] = new SqlParameter("@UserId", SqlDbType.Int);
parameters[0].Value = SessionVariables.UserID;
parameters[1] = new SqlParameter("@RoleID", SqlDbType.Int);
parameters[1].Value = SessionVariables.RoleID;
parameters[2] = new SqlParameter("@ReportTitle", SqlDbType.NVarChar);
// Below Code Added on 11/05/2015 (dd/mm/yyyy) for Testing Purposes
//if (pagetitle == "Top Referring Practices" || pagetitle == "Top Referring Physicians")
//{
// //pagetitle = "Trending Report";
//}
// Modification Ends 11/05/2015
parameters[2].Value = pagetitle;
GridData gridData = new GridData();
DataSet ds = SqlHelper.ExecuteDataset(sqlConnectionString, CommandType.StoredProcedure, "Sales_GetDataByDefaultSearch", parameters);
DataTable Datadt = ds.Tables[1];
if (ReportID == 1 && ds.Tables.Count > 3)
{
//holidayList = ds.Tables[3].AsEnumerable().Select(r=>r.Field<string>("NonWorkingDays")).ToArray();
}
StringBuilder sbcol = new StringBuilder();
sbcol.Append("[");
foreach (DataColumn column in Datadt.Columns)
{
sbcol.Append("\"").Append(GetPivotColumnName(column.ColumnName)).Append("\",");
}
sbcol.Remove(sbcol.Length - 1, 1).Append("]");
StringBuilder sbcolModel = new StringBuilder();
sbcolModel.Append("[");
string[] rowAreaFields = ds.Tables[0].Rows[0]["RowArea"].ToString().Split(',');
//string rowArea;
//rowArea = string.Join(",", rowAreaFields);
foreach (DataColumn column in Datadt.Columns)
{
//if (rowAreaFields.Contains(column.ColumnName.Trim()) && column.ColumnName != null)
if (rowAreaFields.Any(s => column.ColumnName.Trim().Contains(s)))
{
sbcolModel.Append("{\"name\":\"").Append(GetPivotColumnName(column.ColumnName.Trim())).Append("\",\"index\":\"").Append(GetPivotColumnName(column.ColumnName.Trim())).Append("\",\"classes\":\"colstyle\",\"align\":\"left\",\"sortable\":true,\"frozen\":true},");
}
//else if (holidayList.Contains(column.ColumnName.Trim()) && column.ColumnName != null)
//{
// sbcolModel.Append("{\"name\":\"").Append(GetPivotColumnName(column.ColumnName.Trim())).Append("\",\"index\":\"").Append(GetPivotColumnName(column.ColumnName.Trim())).Append("\",\"classes\":\"holidaystyle\",\"align\":\"right\",\"width\":\"70px\"},");
//}
else if (column.Ordinal >= Datadt.Columns.Count - NoofSummaryColumns)
{
if (PosNegSummaryValues.Contains(Datadt.Columns.Count - column.Ordinal))
{
sbcolModel.Append("{\"name\":\"").Append(GetPivotColumnName(column.ColumnName.Trim())).Append("\",\"index\":\"").Append(GetPivotColumnName(column.ColumnName.Trim())).Append("\",\"classes\":\"PosNegValue\",\"align\":\"right\",\"sortable\":true,\"width\":\"70px\"},");
}
else
{
if (column.ColumnName.Contains(" Actual"))
{
sbcolModel.Append("{\"name\":\"").Append(GetPivotColumnName(column.ColumnName.Trim())).Append("\",\"index\":\"").Append(GetPivotColumnName(column.ColumnName.Trim())).Append("\",\"classes\":\"SummaryColumns\",\"align\":\"right\",\"sortable\":true,\"width\":\"70px\"},");
}
else
{
sbcolModel.Append("{\"name\":\"").Append(GetPivotColumnName(column.ColumnName.Trim())).Append("\",\"index\":\"").Append(GetPivotColumnName(column.ColumnName.Trim())).Append("\",\"classes\":\"SummaryColumns\",\"align\":\"right\",\"sortable\":true,\"width\":\"120px\"},");
}
}
}
else
{
sbcolModel.Append("{\"name\":\"").Append(GetPivotColumnName(column.ColumnName.Trim())).Append("\",\"index\":\"").Append(GetPivotColumnName(column.ColumnName.Trim())).Append("\",\"align\":\"right\",\"width\":\"70px\"},");
}
}
sbcolModel.Remove(sbcolModel.Length - 1, 1);
sbcolModel.Append("]");
JavaScriptSerializer serializer = new JavaScriptSerializer();
List<Dictionary<string, object>> rows = new List<Dictionary<string, object>>();
Dictionary<string, object> drow;
foreach (DataRow dr in Datadt.Rows)
{
drow = new Dictionary<string, object>();
foreach (DataColumn col in Datadt.Columns)
{
drow.Add(GetPivotColumnName(col.ColumnName), dr[col]);
}
rows.Add(drow);
}
StringBuilder sbjsonRows = new StringBuilder();
sbjsonRows.Append(serializer.Serialize(rows));
StringBuilder json = new StringBuilder();
json.Append("{").Append("\"rows\":").Append(sbjsonRows.ToString().Trim()).Append("}");
json.ToString();
string[] GroupAreaSortOrderArray;
string[] SummarySortOrderArray;
foreach (DataRow dr in ds.Tables[0].Rows)
{
gridData.isReportDefault = dr["IsDefault"] == DBNull.Value ? false : Convert.ToBoolean(dr["IsDefault"]);
gridData.isAllReportDefault = dr["IsAllReportDefault"] == DBNull.Value ? false : Convert.ToBoolean(dr["IsAllReportDefault"]);
gridData.IsVolume = dr["IsVolume"] == DBNull.Value ? true : Convert.ToBoolean(dr["IsVolume"]);
gridData.RowArea = dr["RowArea"] == DBNull.Value ? "Modality" : GetRowAreaForPivot(Convert.ToString(dr["RowArea"]));
gridData.TitleName = dr["TitleName"] == DBNull.Value ? "" : Convert.ToString(dr["TitleName"]);
gridData.SelectedPractice = dr["PracticeFilter"] == DBNull.Value ? "" : Convert.ToString(dr["PracticeFilter"]);
gridData.SelectedModality = dr["ModalityFilter"] == DBNull.Value ? "" : Convert.ToString(dr["ModalityFilter"]).Replace("'","");
gridData.SelectedLocation = dr["LocationFilter"] == DBNull.Value ? "" : Convert.ToString(dr["LocationFilter"]);
gridData.SelectedCpt = dr["CptFilter"] == DBNull.Value ? "" : Convert.ToString(dr["CptFilter"]).Replace("'","");
gridData.SelectedPhysicians = dr["ReferringPhysicianFilter"] == DBNull.Value ? "" : Convert.ToString(dr["ReferringPhysicianFilter"]);
gridData.SelectedReferringPractice = dr["ReferringPracticeFilter"] == DBNull.Value ? "" : Convert.ToString(dr["ReferringPracticeFilter"]);
gridData.SelectedSpeciality = dr["SpecialityFilter"] == DBNull.Value ? "" : Convert.ToString(dr["SpecialityFilter"]);
gridData.PageSize = dr["PageSize"] == DBNull.Value ? 30 : Convert.ToInt32(dr["PageSize"]);
gridData.ScheduledReport = dr["IsReportScheduled"] == DBNull.Value ? false : Convert.ToBoolean(dr["IsReportScheduled"]);
gridData.Daily = dr["Daily"] == DBNull.Value ? false : Convert.ToBoolean(dr["Daily"]);
gridData.Weekly = dr["Weekly"] == DBNull.Value ? -1 : Convert.ToInt32(dr["Weekly"]);
gridData.Monthly = dr["Monthly"] == DBNull.Value ? 0 : Convert.ToInt32(dr["Monthly"]);
gridData.SelectedPracticeName = dr["PracticeName"] == DBNull.Value ? "" : Convert.ToString(dr["PracticeName"]);
gridData.ShowSubTotalForAllGroup = dr["ShowSubTotalForAllGroup"] == DBNull.Value ? "False" : Convert.ToString(dr["ShowSubTotalForAllGroup"]);
//remap the db column to its corresponding Pivot column here
GroupAreaSortOrderArray = Convert.ToString(dr["GroupAreaSortOrder"]).Split('@');
SummarySortOrderArray = Convert.ToString(dr["SummarySortOrder"]).Split('@');
gridData.order = dr["order"] == DBNull.Value ? "" : Convert.ToString(dr["order"]);
if (GroupAreaSortOrderArray[0] != "")
{
gridData.orderBy = GroupAreaSortOrderArray[0] == null ? "" : MapDbColumnsToPivot(GroupAreaSortOrderArray[0], Datadt);
gridData.direction = GroupAreaSortOrderArray[1] == null ? "" : MapDbColumnsToPivot(GroupAreaSortOrderArray[1], Datadt);
}
if (SummarySortOrderArray[0] != "")
{
gridData.orderBySummary = SummarySortOrderArray[0] == null ? "" : MapDbColumnsToPivot(SummarySortOrderArray[0], Datadt);
gridData.orderBySummaryCol = SummarySortOrderArray[1] == null ? "" : MapDbColumnsToPivot(SummarySortOrderArray[1], Datadt);
}
//gridData.orderBy = gridData.order == "" ? "" :gridData.order.Split('@')[0];
//gridData.direction = gridData.direction==""?"" :gridData.order.Split('@')[1];
//gridData.Date = dr["Date"] == DBNull.Value ? "" : Convert.ToDateTime(dr["Date"]).ToString("yyyy-MM-dd");
}
gridData.page = 1;
gridData.total = Convert.ToInt32(Math.Ceiling(Convert.ToDouble(ds.Tables[2].Rows[0][0]) / Convert.ToDouble(ds.Tables[0].Rows[0]["PageSize"])));
gridData.records = Convert.ToInt32(ds.Tables[2].Rows[0][0]);
gridData.col = sbcol.ToString();
gridData.colModel = sbcolModel.ToString();
gridData.rows = sbjsonRows.ToString().Trim();
return serializer.Serialize(gridData);
}
#endregion
//}
}
}
catch (Exception ex)
{
Elmah.ErrorLog.GetDefault(HttpContext.Current).Log(new Elmah.Error(ex));
throw;
}
}
[System.Web.Services.WebMethod]
public static string GetData(bool isVolume, int pageNumber, int pageSize, string rowArea, string specialityFilter, string modalityFilter, string locationFilter, string CptFilters, string referringpracticeFilter, string referringphysiciansFilter, int ReportID, string practiceFilter, string order, string orderBy, string direction, int SearchTitleID, string orderBySummary, string orderBySummaryCol, string ShowSubTotalForAllGroup)
{
try
{
if (HttpContext.Current.Session["RoleID"] == null || SessionVariables.RoleID == 0 || SessionVariables.UserID == 0)
{
return "null";
}
else
{
if (practiceFilter == null || practiceFilter == "")
{
practiceFilter = "1";
}
System.Collections.SortedList SystemSearchTitleIDs = new System.Collections.SortedList();
SystemSearchTitleIDs = (System.Collections.SortedList)HttpContext.Current.Session["SystemSearchTitleIds"];
SetProperties(ReportID);
HttpContext.Current.Session["ReportID"] = ReportID;
GridData gd;
string[] orderArray;
if (order.Trim() != string.Empty)
{
orderArray = order.Split('@');
orderArray[0] = SalesColumnMapper(orderArray[0]);
order = orderArray[0] + "@" + orderArray[1];
}
gd = GetGridData(isVolume: isVolume, pageNumber: pageNumber, pageSize: pageSize, rowArea: rowArea, modalityFilter: modalityFilter, locationFilter: locationFilter, referringPhysician: referringphysiciansFilter, referringPractice: referringpracticeFilter, speciality: specialityFilter, cpt: CptFilters, practice: practiceFilter, order: order, orderBy: orderBy, direction: direction, orderBySummary: orderBySummary, OrderBySummaryCol: orderBySummaryCol, ShowSubTotalForAllGroup: ShowSubTotalForAllGroup);
HttpContext.Current.Session["SalesUserSession"] = gd;
JavaScriptSerializer serializer = new JavaScriptSerializer();
return serializer.Serialize(gd);
}
}
catch (Exception ex)
{
Elmah.ErrorLog.GetDefault(HttpContext.Current).Log(new Elmah.Error(ex));
throw;
}
}
private static GridData GetGridData(bool isVolume, int pageNumber, int pageSize, string rowArea, string modalityFilter, string locationFilter, string referringPhysician, string referringPractice, string speciality, string cpt, string practice, string order,string orderBy, string direction, string orderBySummary, string OrderBySummaryCol,string ShowSubTotalForAllGroup)
{
try
{
string[] rowAreaFields = rowArea.Split(',').Select(field => field.Trim()).ToArray();
DataSet ds = GetDataByFilterCriteria(isVolume: isVolume, pageNumber: pageNumber, pageSize: pageSize, rowArea: rowArea, modalityFilter: modalityFilter, locationFilter: locationFilter, referringPhysician: referringPhysician, referringPractice: referringPractice, speciality: speciality, cpt: cpt, practice: practice, order: order, ShowSubTotalForAllGroup: ShowSubTotalForAllGroup);
DataTable Datadt = ds.Tables[0];
StringBuilder sbcol = new StringBuilder();
sbcol.Append("[");
foreach (DataColumn column in Datadt.Columns)
{
sbcol.Append("\"").Append(GetPivotColumnName(column.ColumnName.Trim())).Append("\",");
}
sbcol.Remove(sbcol.Length - 1, 1);
sbcol.Append("]");
StringBuilder sbcolModel = new StringBuilder();
sbcolModel.Append("[");
foreach (DataColumn column in Datadt.Columns)
{
if (rowAreaFields.Any(s => GetPivotColumnName(column.ColumnName.Trim()).Contains(s)))
{
sbcolModel.Append("{\"name\":\"").Append(GetPivotColumnName(column.ColumnName.Trim())).Append("\",\"index\":\"").Append(GetPivotColumnName(column.ColumnName.Trim())).Append("\",\"classes\":\"colstyle\",\"align\":\"left\",\"sortable\":true,\"frozen\":true},");
}
else if (column.Ordinal >= Datadt.Columns.Count - NoofSummaryColumns)
{
if (PosNegSummaryValues.Contains(Datadt.Columns.Count - column.Ordinal))
{
sbcolModel.Append("{\"name\":\"").Append(GetPivotColumnName(column.ColumnName.Trim())).Append("\",\"index\":\"").Append(GetPivotColumnName(column.ColumnName.Trim())).Append("\",\"classes\":\"PosNegValue\",\"align\":\"right\",\"sortable\":true,\"width\":\"70px\"},");
}
else
{
if (column.ColumnName.Contains(" Actual"))
{
sbcolModel.Append("{\"name\":\"").Append(GetPivotColumnName(column.ColumnName.Trim())).Append("\",\"index\":\"").Append(GetPivotColumnName(column.ColumnName.Trim())).Append("\",\"classes\":\"SummaryColumns\",\"align\":\"right\",\"sortable\":true,\"width\":\"70px\"},");
}
else {
sbcolModel.Append("{\"name\":\"").Append(GetPivotColumnName(column.ColumnName.Trim())).Append("\",\"index\":\"").Append(GetPivotColumnName(column.ColumnName.Trim())).Append("\",\"classes\":\"SummaryColumns\",\"align\":\"right\",\"sortable\":true,\"width\":\"120px\"},");
}
}
}
else
{
sbcolModel.Append("{\"name\":\"").Append(GetPivotColumnName(column.ColumnName.Trim())).Append("\",\"index\":\"").Append(GetPivotColumnName(column.ColumnName.Trim())).Append("\",\"align\":\"right\",\"width\":\"70px\"},");
}
}
sbcolModel.Remove(sbcolModel.Length - 1, 1);
sbcolModel.Append("]");
JavaScriptSerializer serializer = new JavaScriptSerializer();
List<Dictionary<string, object>> rows = new List<Dictionary<string, object>>();
Dictionary<string, object> drow;
foreach (DataRow dr in Datadt.Rows)
{
drow = new Dictionary<string, object>();
foreach (DataColumn col in Datadt.Columns)
{
drow.Add(GetPivotColumnName(col.ColumnName), dr[col]);
}
rows.Add(drow);
}
StringBuilder sbjsonRows = new StringBuilder();
sbjsonRows.Append(serializer.Serialize(rows));
StringBuilder json = new StringBuilder();
json.Append("{");
json.Append("\"rows\":");
json.Append(sbjsonRows.ToString().Trim());
json.Append("}");
json.ToString();
GridData gridData = new GridData();
gridData.SelectedPractice = practice; // New statement returns practicefilter -- if grid displays this we can remove it
gridData.SelectedLocation = locationFilter;
gridData.SelectedModality = modalityFilter;
gridData.SelectedReferringPractice = referringPractice;
gridData.SelectedPhysicians = referringPhysician;
gridData.SelectedCpt = cpt;
gridData.SelectedSpeciality = speciality;
gridData.PageSize = pageSize;
gridData.RowArea = rowArea;
gridData.IsVolume = isVolume;
gridData.page = 1;
gridData.total = Convert.ToInt32(Math.Ceiling(Convert.ToDouble(ds.Tables[1].Rows[0][0]) / Convert.ToDouble(pageSize)));
gridData.records = Convert.ToInt32(ds.Tables[1].Rows[0][0]);
gridData.col = sbcol.ToString();
gridData.colModel = sbcolModel.ToString();
gridData.rows = sbjsonRows.ToString().Trim();
gridData.order = order;
gridData.orderBy = orderBy;
gridData.direction = direction;
gridData.orderBySummary = orderBySummary;
gridData.orderBySummaryCol = OrderBySummaryCol;
gridData.ShowSubTotalForAllGroup = ShowSubTotalForAllGroup;
//Temporary Solution for getting the practice name for the corresponding practice
//var reader = SqlHelper.ExecuteReader(sqlConnectionString, CommandType.Text, "select practicename from practice where practiceid="+practice);
SqlConnection con = new SqlConnection(sqlConnectionString);
SqlCommand cmd = new SqlCommand();
Object returnValue;
cmd.CommandText = "select practicename from practice where practiceid="+practice;
cmd.CommandType = CommandType.Text;
cmd.Connection = con;
con.Open();
returnValue = cmd.ExecuteScalar();
con.Close();
gridData.SelectedPracticeName = returnValue.ToString();
return gridData;
}
catch (Exception ex)
{
Elmah.ErrorLog.GetDefault(HttpContext.Current).Log(new Elmah.Error(ex));
throw;
}
}
答案 0 :(得分：0)
当你这样做的时候
gd = HttpContext.Current.Session["SalesUserSession"] as GridData;
gd是对HttpContext.Current.Session["SalesUserSession"]
这就是您的会话受到修改影响的原因。
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