Доделаны требования и удалены ненужные файлы

ProjectMotorBoat/ProjectMotorBoat/CollectionGenericObjects/StorageCollection.cs

@@ -116,11 +116,12 @@ public class StorageCollection<T>
             File.Delete(filename);
         }
 
-        StringBuilder sb = new();
-
-        sb.Append(_collectionKey);
+        using (StreamWriter wr = new StreamWriter(filename))
+        {
+            wr.Write(_collectionKey);
             foreach (KeyValuePair<string, ICollectionGenericObjects<T>> value in _storages)
             {
+                StringBuilder sb = new StringBuilder();
                 sb.Append(Environment.NewLine);
                 // Не сохраняем пустые коллекции
                 if (value.Value.Count == 0)
@@ -146,11 +147,9 @@ public class StorageCollection<T>
                     sb.Append(data);
                     sb.Append(_separatorItems);
                 }
+                wr.Write(sb);
+            }
         }
-
-        using FileStream fs = new(filename, FileMode.Create);
-        byte[] info = new UTF8Encoding(true).GetBytes(sb.ToString());
-        fs.Write(info, 0, info.Length);
         return true;
     }
 
@@ -166,31 +165,23 @@ public class StorageCollection<T>
             return false;
         }
 
-        string bufferTextFromFile = "";
-        using (FileStream fs = new(filename, FileMode.Open))
+        using (StreamReader sr = new StreamReader(filename))
         {
-            byte[] b = new byte[fs.Length];
-            UTF8Encoding temp = new(true);
-            while (fs.Read(b, 0, b.Length) > 0)
-            {
-                bufferTextFromFile += temp.GetString(b);
-            }
-        }
-
-        string[] strs = bufferTextFromFile.Split(new char[] { '\n', '\r' }, StringSplitOptions.RemoveEmptyEntries);
-        if (strs == null || strs.Length == 0)
+            string str = sr.ReadLine();
+            if (str == null || str.Length == 0)
             {
                 return false;
             }
 
-        if (!strs[0].Equals(_collectionKey))
+            if (!str.Equals(_collectionKey))
             {
                 // Если нет такой записи, то это не те данные
                 return false;
             }
 
             _storages.Clear();
-        foreach (string data in strs)
+            string data = "";
+            while ((data = sr.ReadLine()) != null)
             {
                 string[] record = data.Split(_separatorForKeyValue, StringSplitOptions.RemoveEmptyEntries);
                 if (record.Length != 4)
@@ -221,7 +212,7 @@ public class StorageCollection<T>
 
                 _storages.Add(record[0], collection);
             }
-
+        }
         return true;
     }