如何读取文本文件的特定行数不循环的ReadLine（）？ [英] How to read specific line number of text file without looping ReadLine()?
问题描述
有一类，可以让你读取行号线在C＃？
Is there a class that lets you read lines by line number in C#?
我知道的StreamReader和TextFieldParser但AFAIK那些不具备此功能。例如，如果我知道，行号34572在我的文本文件中包含的某些数据，这将是很好，不用调用 StreamReader.ReadLine（） 34572次。
I know about StreamReader and TextFieldParser but AFAIK those don't have this functionality. For example, if I know that line number 34572 in my text file contains certain data, it would be nice to not have to call StreamReader.ReadLine() 34572 times.
推荐答案
除非文件具有precise和$ P $对确定的格式，例如与具有相同长度的每一行，也没有办法来争取在一个文本文件中。
Unless the file has a precise and pre-determined format, for instance with every line having the same length, there is no way to seek within a text file.
为了找到我日行，你必须找到第i-1行结束。如果你不知道在哪里的线端可以是任何东西，它遵循，你必须阅读整个文件，直到我日行。
In order to find the ith line, you must find the first i-1 line ends. And if you do not know anything about where those line ends could be, it follows that you must read the entire file up until the ith line.
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