Fix: improve memory performance

Author: cpa-coder

DebitExpress.VatRelief/MainWindow.xaml.cs

@@ -2,7 +2,6 @@
 using System.Diagnostics;
 using System.IO;
 using System.Linq;
-using System.Reflection;
 using System.Windows;
 using DebitExpress.VatRelief.Models;
 using DebitExpress.VatRelief.Utils;
@@ -118,6 +117,7 @@ private async void OnGenerate(object sender, RoutedEventArgs e)
 
             NotifyResult("Files generated successfully");
             OpenFolder(path);
+            GC.Collect();
         }
         finally
         {

DebitExpress.VatRelief/Utils/DatFileGenerator.cs

@@ -51,6 +51,13 @@ public async Task<Result> GenerateAsync(ExcelData data, string path)
         if (secondMonthPurchases.Count > 0) await generator.GeneratePurchasesAsync(info, secondMonth, secondMonthPurchases, path);
         if (thirdMonthPurchases.Count > 0) await generator.GeneratePurchasesAsync(info, thirdMonth, thirdMonthPurchases, path);
 
+        firstMonthSales.Clear();
+        secondMonthSales.Clear();
+        thirdMonthSales.Clear();
+        firstMonthPurchases.Clear();
+        secondMonthPurchases.Clear();
+        thirdMonthPurchases.Clear();
+        
         return new Result();
     }
 
@@ -254,7 +261,7 @@ private async Task WritePurchasesDataAsync(TextWriter file, Info info, DateTime
     {
         foreach (var item in items)
         {
-            var line = $"D,P,{item.Tin.Strip()}," +
+            var line = $"D,P,\"{item.Tin.Strip()}\"," +
                        $"\"{item.RegName}\"," +
                        $"\"{item.LastName}\"," +
                        $"\"{item.FirstName}\"," +

DebitExpress.VatRelief/Utils/ExcelReconWriter.cs

@@ -75,6 +75,9 @@ public Result WriteReconciliationReport(ExcelData data, string path)
 
             workbook.SaveAs(fullPath);
 
+            extractedSales.ForceClear();
+            extractedPurchases.ForceClear();
+
             return new Result();
         }
         catch (Exception e)

DebitExpress.VatRelief/Utils/Extensions.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.Text.RegularExpressions;
 
 namespace DebitExpress.VatRelief.Utils;
@@ -119,4 +120,11 @@ public static DateTime GetEndOfMonth(int year, int month)
         var eom = DateTime.DaysInMonth(year + 1, month - lastMonth);
         return new DateTime(year + 1, month - lastMonth, eom);
     }
+    
+    public static void ForceClear<T>(this List<T> list)
+    {
+        list.Clear();            
+        var id = GC.GetGeneration(list);
+        GC.Collect(id, GCCollectionMode.Forced);
+    }
 }