阅读chunks二进制文件C＃

Question

如何在C＃中的二进制文件中读取5兆字节的块？

对于每一个块我需要做一件事... 请帮帮我！

Answer 1

您可以使用FileStream来读取二进制文件，然后对其进行处理。这里有一个例子：

using (var inFileSteam = new FileStream(@"C:\path\to\file.bin", FileMode.Open)) 
{ 
    byte[] buffer = new byte[5 * 1024 * 1024]; // 5MB in bytes is 5 * 2^20 
    int bytesRead = inFileSteam.Read(buffer, 0, buffer.Length); 

    while (bytesRead > 0) 
    { 
     for (int i = 0; i < bytesRead; i++) 
     { 
      if (buffer[i] == 0x28) // 0010 1000 in binary 
      { 
       // replace for example or any other manipulation 
       buffer[i] = 0x00; 
      } 
     } 

     outFileStream.Write(buffer, 0, bytesRead); 

     bytesRead = inFileSteam.Read(buffer, 0, buffer.Length); 
    } 
}