C# 持续序列化对象追加到文件的方法

 1 using System.Collections;
 2 using System.Collections.Generic;
 3 using ProfilterDataNS;
 4 using System.IO;
 5 using System.Runtime.Serialization.Formatters.Binary;
 6 
 7 public class DataCache{
 8     string _filePath="profilterData.bin";
 9     int _limitNum=100;
10     int _index=0;
11     ProfilterData [] _cacheArr;//=new ProfilterData[limitNum];
12 
13     private BinaryFormatter binFormat = new BinaryFormatter();//创建二进制序列化器
14     
15     public DataCache(int limitNum,string filePath)
16     {
17         _index=0;
18         _filePath=filePath;
19         _limitNum=limitNum;
20         _cacheArr=new ProfilterData[limitNum];
21         for(int i=0;i<_cacheArr.Length;i++)
22         {
23             _cacheArr[i]=new ProfilterData();
24         }
25         FileStream fStream = new FileStream(_filePath,FileMode.Create);
26         fStream.Close();
27     }
28     /// <summary>
29     /// 添加数据
30     /// </summary>
31     /// <param name="fps"></param>
32     /// <param name="memory"></param>
33     public void Append(float fps,float memory)
34     {
35         if(_index==_limitNum-1)
36         {
37             WriteData(_cacheArr);
38         }
39         ProfilterData profData=_cacheArr[_index];
40         profData.fps=fps;
41         profData.memory=memory;
42         _index++;
43     }
44 
45 
46     /// <summary>
47     /// 立即结算
48     /// </summary>
49     public void SettleAtOnce()
50     {
51         if(_index==0)
52         return;
53 
54         ProfilterData [] tempArr=new ProfilterData[_index];
55         for(int i=0;i<tempArr.Length;i++)
56         {
57             tempArr[i]=_cacheArr[i];
58         }
59         WriteData(tempArr);
60     }
61 
62     /// <summary>
63     /// 写入数据
64     /// </summary>
65     private void WriteData(ProfilterData [] arr)
66     {
67         using (FileStream fStream = new FileStream(_filePath,FileMode.Append,FileAccess.Write))
68         {
69             binFormat.Serialize(fStream, arr);
70             fStream.Close();
71         }
72         _index=0;
73     }
74 }

 1 using System.Collections;
 2 using System.Collections.Generic;
 3 using ProfilterDataNS;
 4 using System.IO;
 5 using System.Runtime.Serialization.Formatters.Binary;
 6 
 7 public class AnalyzeData{
 8     public static List<ProfilterData> Analyze(string filePath)
 9     {
10         MemoryStream ms = new MemoryStream();
11         BinaryFormatter binFormat = new BinaryFormatter();//创建二进制序列化器
12 
13         List<ProfilterData> profList=new List<ProfilterData>();
14 
15         using (FileStream fs= File.OpenRead("profilterData.bin"))
16         {
17             int offset=0;
18             while(fs.Position<fs.Length)
19             {
20                 ProfilterData []dataArr=(ProfilterData[])binFormat.Deserialize(fs);
21                 profList.AddRange(dataArr);
22                 binFormat.Serialize(ms, dataArr);//序列化到内存流中
23                 byte[] bt = ms.ToArray();
24                 offset=bt.Length;//获取偏移量
25             }
26         }
27         return profList;
28     }
29 }