有没有办法从锁定的文件中读取数据？ [英] Is there any way to read data from a locked file?

问题描述

这就是我心目中：

        var file = @"myfile";
        File.Open(file,
                  FileMode.Open, FileAccess.ReadWrite, FileShare.None);

        using (StreamReader rdr = new StreamReader(File.Open(file, FileMode.Open, FileAccess.Read, FileShare.Read)))
        {
            rdr.ReadToEnd();
        }
        var t = File.ReadAllBytes(file);

Neigther File.Open（文件，FileMode.Open，FileAccess.Read， FileShare.Read）也不 File.ReadAllBytes 可以读取文件中的数据。

Neigther File.Open(file, FileMode.Open, FileAccess.Read, FileShare.Read) nor File.ReadAllBytes can read file data.

从我旧的C ++和WINAPI天，我记得，有曾经是一个很好的方式来读取锁定的文件，如果你有备份权限的，但我不知道如何获取并使用那些在c＃。

From my old c++ and winapi days, I do remember, that there used to be a good way to read locked files, if you have backup priviledges, but I have no idea how obtain and use those in c#.

谁能为我提供它已被锁定后如何读取文件的样本？

Can anyone provide me with a sample on how to read a file after it has been locked?

推荐答案

那么，如果该文件被完全锁定（没有的共享），您将无法读取它。如果文件被打开了份额阅读，您将能够使用非侵入性方法来读取：

Well, if the file is totally locked (no sharing) you will not be able to read it. If the file was opened to share read, you will be able to read using a non intrusive method:

string fileName = @"myfile";
using (FileStream fileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
using (StreamReader fileReader = new StreamReader(fileStream ))
{
    while (!fileReader .EndOfStream)
    {
        string line = fileReader .ReadLine();
        // Your code here
    }
}

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