当使用c# BinaryFormatter.Deserialize时，是什么导致UI出现问题?

本文关键字：UI 问题是什么 BinaryFormatter Deserialize | 更新日期: 2023-09-27 17:50:42

我使用BinaryFormatter来序列化和反序列化条目列表到byte[]数组中，并且我注意到对于列表中的大量元素，我的UI将挂起或有"打嗝"。当我说重要时，我指的是10K个项目(每个项目都有自己的项目集合)。

有趣的是，序列化和反序列化发生在一个单独的线程上，所以我不会认为会发生UI中断。我只是好奇是否有人处理过类似的事情，以及是否有任何解决方法。

下面的代码片段来自我正在测试的剥离的sol'n。当我在这里使用BinaryFormatter读取和写入磁盘时，我更感兴趣的部分是SerializationHelper类中的内容(它在内存中完成)。

我也意识到UI线程将被中断以发布状态更新，但这些可以忽略不计。我注意到当BinaryFormatter时UI挂起了。反序列化正在执行，UI上没有任何更新。

DataReader :

using System.Collections.Generic;
using System.IO;
using System.Runtime.Serialization.Formatters.Binary;
namespace SerializationTesting
{
  internal class DataReader : DataIOBase
  {
    #region Constants
    private const int MAX_STEPS = 2;
    #endregion
    #region Declarations
    private string _file;
    #endregion
    public DataReader(string file)
    {
      _file = file;
    }
    protected override void DoWork()
    {
      UpdateStatus(0, MAX_STEPS, "Reading from file...");
      byte[] serializedData = ReadFromDisk();
      UpdateStatus(1, MAX_STEPS, "Deserializing data...");
      if (serializedData == null) return;
      DeserializeData(serializedData);
      UpdateStatus(2, MAX_STEPS, "Finished!");
    }
    private byte[] ReadFromDisk()
    {
      byte[] serializedData = null;
      using (FileStream stream = new FileStream(_file, FileMode.Open, FileAccess.Read))
      {
        using (BufferedStream bufferedStream = new BufferedStream(stream))
        {
          BinaryFormatter formatter = new BinaryFormatter();
          serializedData = formatter.Deserialize(bufferedStream) as byte[];
        }
      }
      return serializedData;
    }
    private void DeserializeData(byte[] serializedData)
    {
      List<Data> dataList = SerializationHelper.Deserialize(serializedData, new List<Data>());
      dataList.Clear();
      dataList = null;
      serializedData = null;
    }
  }
}

DataWriter :

using System.Collections.Generic;
using System.IO;
using System.Runtime.Serialization.Formatters.Binary;
namespace SerializationTesting
{
  internal class DataWriter : DataIOBase
  {
    #region Declarations
    private string _file;
    private int _count;
    #endregion
    public DataWriter(string file, int count)
    {
      _file = file;
      _count = count;
    }
    protected override void DoWork()
    {
      int maxSteps = _count + 2;
      UpdateStatus(0, maxSteps, "Creating data...");
      List<Data> dataList = CreateData(maxSteps);
      UpdateStatus(_count, maxSteps, "Serializing data...");
      byte[] serializedData = SerializationHelper.Serialize(dataList, null);
      UpdateStatus(_count + 1, maxSteps, "Writing to file...");
      WriteToDisk(serializedData, maxSteps);
      serializedData = null;
      dataList.Clear();
      dataList = null;
      UpdateStatus(maxSteps, maxSteps, "Finished!");
    }
    private List<Data> CreateData(int maxSteps)
    {
      List<Data> dataList = new List<Data>();
      for (int i = 0; i < _count; i++)
      {
        UpdateStatus(i, maxSteps, string.Format("Creating item {0}...", i + 1));
        Data data = new Data();
        dataList.Add(data);
      }
      return dataList;
    }
    private void WriteToDisk(byte[] serializedData, int maxSteps)
    {
      using (FileStream stream = new FileStream(_file, FileMode.Create, FileAccess.Write))
      {
        using (BufferedStream bufferedStream = new BufferedStream(stream))
        {
          BinaryFormatter formatter = new BinaryFormatter();
          formatter.Serialize(bufferedStream, serializedData);
        }
      }
    }
  }
}

DataIOBase :