读写文件

 1     /// <summary>
 2     /// 写字符串到特定文件中
 3     /// </summary>
 4     /// <param name="content"></param>
 5     /// <param name="filePath"></param>
 6     private static void WriteContentToFile(string content,string filePath)
 7     {
 8         List<int> byteLengths = new List<int>();
 9         FileStream fileStream = null;
10         BufferedStream writer = null;
11         try
12         {
13             fileStream = new FileStream(filePath, FileMode.OpenOrCreate, FileAccess.Write);
14             writer = new BufferedStream(fileStream);
15             //sum read byte length
16             byte[] contentBytes = System.Text.Encoding.Default.GetBytes(content);
17 
18             writer.Write(contentBytes, 0, contentBytes.Length);
19           
20         }
21         catch (Exception ex)
22         {
23             throw ex;
24         }
25         finally
26         {
27             writer.Close();
28             fileStream.Close();
29         }
30     }

 1     /// <summary>
 2     /// 从文件中读取包含特定文本的区域内容
 3     /// 如下一共有三段文本，需要读取每段文本的区域内容
 4     /// ##1##
 5     ///^XA
 6     ///...
 7     ///^XZ
 8     ///##2##
 9     ///^XA
10     ///...
11     ///^XZ
12     ///##3##
13     ///^XA
14     ///...
15     ///^XZ
16     /// </summary>
17     /// <param name="prnFilePath"></param>
18     private string[] ReadContent(string prnFilePath) 
19     {
20         //区域内容的数量，如上例示例中的3
21         int zoneQty = 3;
22         string[] contents = new string[zoneQty];
23 
24         FileStream fileStream = null;
25         StreamReader streamReader = null;
26         try
27         {
28             fileStream = new FileStream(prnFilePath, FileMode.Open, FileAccess.Read);
29             streamReader = new StreamReader(fileStream, System.Text.Encoding.ASCII);
30           
31             for (int zoneIndex = 0; zoneIndex < zoneQty; zoneIndex++)
32             {
33                 StringBuilder contentStringBuilder = new StringBuilder();
34                 string readLine = streamReader.ReadLine();
35                 while (readLine != null)
36                 {
37                     contentStringBuilder.Append(readLine);
38                     contentStringBuilder.Append("\r\n");
39                     //^XZ是特定内容。即代表一段区域内容的结束
40                     if (readLine.Contains("^XZ"))
41                     {
42                         //如果读取到结束标记，则读取下一个区域的文本
43                         contents[zoneIndex] = contentStringBuilder.ToString();
44                         break;
45                     }
46                     else
47                     {
48                         //如没有读取到结束标记，则继续读取下一行内容
49                         readLine = streamReader.ReadLine();
50                     }
51                 }
52             }
53         }
54         catch (Exception ex)
55         {
56             throw ex;
57         }
58         finally
59         {
60             streamReader.Close();
61             fileStream.Close();
62         }
63 
64         return contents;
65     }