我们可以通过使用 的StreamReader 或使用 File.ReadAllLines 。
We can read file either by using StreamReader or by using File.ReadAllLines.
例如我想行的每一行加载到列表或字符串[ ] 为每行进一步的操作。
For example I want to load each line of line into a List or string[] for further manipulation on each line.
string[] lines = File.ReadAllLines(@"C:\\file.txt"); foreach(string line in lines) { //DoSomething(line); }或
using (StreamReader reader = new StreamReader("file.txt")) { string line; while ((line = reader.ReadLine()) != null) { //DoSomething(line); or //save line into List<string> } } //if list is created loop through list here应用遇到不同大小的文本文件。这可以从几个 KB为到 MBS 偶尔
Application come across different size of text file. Which could grow from few KBs to MBs occasionally.
我的问题是最好的一种方式以及为什么要优于其他?
My question is that which one is preferred way and why one should be preferred over other?
推荐答案如果你要处理的每个而不需要将整个文件加载到内存中的文本文件的行,最好的办法是这样的:
If you want to process each line of a text file without loading the entire file into memory, the best approach is like this:
foreach (var line in File.ReadLines("Filename")) { // ...process line. }这避免了加载整个文件,并使用现有的.NET函数来完成左右。
This avoids loading the entire file, and uses an existing .Net function to do so.
但是,如果由于某种原因,你需要的所有字符串存储在一个数组,你最好只是用 File.ReadAllLines () - 但是如果你只使用的foreach 来访问数组中的数据,然后使用 File.ReadLines( )。
However, if for some reason you need to store all the strings in an array, you're best off just using File.ReadAllLines() - but if you are only using foreach to access the data in the array, then use File.ReadLines().
更多推荐
File.ReadAllLines或流读取
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