从文件中读取一行后如何记录位置？ [英] How to file position after reading one line from a file?

问题描述

在C＃中如何读取一行并在阅读完如何获取文件位置后？

In C# how to read a line and after reading how to get the file position?

如何实现两个？

 FileStream fStream = File.OpenRead(filePath);
 var reader = new StreamReader(fStream);
 while (!reader.EndOfStream)
 {
                    
 string line = reader.ReadLine();
                  
   }

如果我调用fStream.Position读取一行，它会将位置值作为整个文件长度只有。

After reading a line if I call fStream.Position , it gives position value as entire file length only.

请帮我解决我的问题。

推荐答案

你可以更好地使用你的BaseStream属性读者获取您当前的位置。并且因为FileStream作为StreamReader应用IDisposable，所以最好将整个包含在using子句中：

You could better use the BaseStream property of your reader to get your current position. And because either FileStream as StreamReader apply IDisposable you should better enclose the whole in a using clause:

using (StreamReader reader = new StreamReader(new FileStream(path, FileMode.Open)))
{
	while ((line = reader.ReadLine()) != null)
	{
	    Debug.WriteLine(reader.BaseStream.Position);
       	    //do sth. with line.
	}
}

wizend

wizend

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