我想读一行文本文件中的行。我想知道如果我尽可能有效率地做事情的.NET C＃范围之内。

这就是我想到目前为止：

  VAR FILESTREAM =新System.IO.FileStream（textFilePath，
                                          System.IO.FileMode.Open，
                                          System.IO.FileAccess.Read，
                                          System.IO.FileShare.ReadWrite）;
var文件=新就是System.IO.StreamReader（FILESTREAM，System.Text.Encoding.UTF8，真实，128）;

而（（lineOfText = file.ReadLine（））！= NULL）
{
    //做一些与lineOfText
}
 

解决方案

如果您使用的是.NET 4中，只需使用的 File.ReadLines 它做这一切为您服务。我怀疑这是的多的和你的一样，但它也可以使用FileOptions.SequentialScan而更大的缓冲区（128看起来非常小的）。

I want to read a text file line by line. I wanted to know if I'm doing it as efficiently as possible within the .NET C# scope of things.

This is what I'm trying so far:

var filestream = new System.IO.FileStream(textFilePath,
                                          System.IO.FileMode.Open,
                                          System.IO.FileAccess.Read,
                                          System.IO.FileShare.ReadWrite);
var file = new System.IO.StreamReader(filestream, System.Text.Encoding.UTF8, true, 128);

while ((lineOfText = file.ReadLine()) != null)
{
    //Do something with the lineOfText
}

If you're using .NET 4, simply use File.ReadLines which does it all for you. I suspect it's much the same as yours, except it may also use FileOptions.SequentialScan and a larger buffer (128 seems very small).