我在阅读文件时做得对吗？

Question

此代码尝试读取文件但出错,

   System.IO.IOException: The process cannot access the file 'C:\doc.ics' because it is being used by another process.
   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy)
   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options)
   at System.IO.StreamWriter.CreateFile(String path, Boolean append)
   at System.IO.StreamWriter..ctor(String path, Boolean append, Encoding encoding, Int32 bufferSize)
   at System.IO.StreamWriter..ctor(String path)

我认为这是在读取文件时导致问题的代码,它在开发和集成服务器上工作正常,但在生产服务器上却没有.

    private byte[] ReadByteArrayFromFile(string fileName)
    {
        byte[] buffer = null;
        FileStream filestrm = new FileStream(fileName, FileMode.Open, FileAccess.Read);
        BinaryReader binaryread = new BinaryReader(filestrm);
        long longNumBytes = new FileInfo(fileName).Length;
        buffer = binaryread.ReadBytes((int)longNumBytes);
        return buffer;
    }

Answer 1

使用:

var bytes = File.ReadAllBytes(@"path");

代替!