C＃内存泄漏 - 剖析器辅助

Question

我无法找到由C＃WPF应用程序中的函数引起的内存泄漏的特定来源，该函数通过DataContext将数据在一组循环中写入SQL DB。我怀疑有些物品没有妥善处理，但我找不到它们。

我尝试在函数中实例化一个新的DataContext来处理所有数据库交互，并在函数末尾显式调用GC.Collect（）。这会减慢内存泄漏，但不会消除它。我尝试过使用ANTS Memory Profiler，但它的快照实例列表＆amp;分类程序不列出对象名称，只显示逐渐增加的通用对象实例数。

编辑（和编辑＃2）：怀疑内存泄漏的罪魁祸首（编辑2：带被调用的函数） -

    private void Eq_Get_HistoricalData(String filename, String Symbol)
        {
            List<String[]> fileContents = new List<String[]>();
            List<DailyDataRowObj> data = new List<DailyDataRowObj>();
            DBHandler_Equities DBHE = new DBHandler_Equities();
            ExternalDataHandler EDHP = new ExternalDataHandler();
            Utilities UT = new Utilities();

            if (File.Exists(filename)) {
                fileContents = EDHP.parseCSV(filename);

                for (int i = 1; i < fileContents.Count; i++) {

                    data.Add(Convert_HistoricalCSVRowToDDRO(fileContents[i], Symbol));

                    DBHE.Insert_DailyData_1Day(data[i - 1].Date, Symbol);
                }
                DBHE.Update_DailyData(data);
            } else {
                Console.WriteLine("Eq_Get_HistoricalData: " + Symbol + " file does not exist");
            }

            if (GlobalVar.GlobalDebugDisplay > DebugDisplayLevel.BaseLevel) {
                UT.WriteToTextFile("C:/debug.txt", "Data pull for " + Symbol + " ended: " + DateTime.Now.ToShortTimeString());
            }
        }

    /////////////////////////////////////////////////////////////////////
    // Separate code snippet, from DBHandler_Equities class definition //

    public void Update_DailyData(List<DailyDataRowObj> DailyDataInput)
    {
        int numRows = DailyDataInput.Count;
        int r = 0;
        using (EquitiesDataContext db = new EquitiesDataContext()) {
            try {
                for (r = 0; r < numRows; r++) {                // loop through PNodeIDs
                    var currRow =                                   // query LMP components for 1 region, 1 hour
                        (from c in db.DailyDatas
                         where c.Symbol == DailyDataInput[r].Symbol
                         && c.Date == DailyDataInput[r].Date
                         select c).First();
                    if (DailyDataInput[r].Price_Close > 0)
                        currRow.Price_Close = DailyDataInput[r].Price_Close;
                    if (DailyDataInput[r].Price_High > 0)
                        currRow.Price_High = DailyDataInput[r].Price_High;
                    if (DailyDataInput[r].Price_Low > 0)
                        currRow.Price_Low = DailyDataInput[r].Price_Low;
                    if (DailyDataInput[r].Price_Open > 0)
                        currRow.Price_Open = DailyDataInput[r].Price_Open;

                    if (DailyDataInput[r].Volume > 0)
                        currRow.Volume = DailyDataInput[r].Volume;

                    if (DailyDataInput[r].Return_Close != 0)
                        currRow.Return_Close = DailyDataInput[r].Return_Close;
                    if (DailyDataInput[r].Return_High != 0)
                        currRow.Return_High = DailyDataInput[r].Return_High;
                    if (DailyDataInput[r].Return_Low != 0)
                        currRow.Return_Low = DailyDataInput[r].Return_Low;
                }
            } catch (Exception e) {
                Console.WriteLine("Error: Update_DailyData - DT: " + Convert.ToString(DailyDataInput[r].Date)
                                    + ", Symbol: " + r.ToString() + " - " + e.Message);
            }
            try {
                db.SubmitChanges();
            } catch (Exception) {
                Console.WriteLine("Error: Update_DailyData - DT: " + Convert.ToString(DailyDataInput[r].Date)
                                    + ", Symbol: " + DailyDataInput[r].Symbol.ToString() + " - db.submitChanges");
            }
            db.Dispose();
        }

        GC.Collect();
    }

注意：DBHandler_Equities.Update_DailyData包含DataContext，它在结尾处显式收集。