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7 lis 2011 · While File.ReadAllLines() is one of the simplest ways to read a file, it is also one of the slowest. If you're just wanting to read lines in a file without doing much, according to these benchmarks, the fastest way to read a file is the age old method of: using (StreamReader sr = File.OpenText(fileName)) {.
25 maj 2023 · There are two simple ways to read a text file line by line: File.ReadLines (): Reads small chunks of the file into memory (buffering) and gives you one line at a time. This is a memory-efficient way to read a file line by line. File.ReadAllLines (): Reads the entire file into a string array (one string per line in the file).
11 lis 2021 · The following code example uses the ReadAllText() method to read all the text in the file in one operation and returns a string. To read the file line by line, split the string using String.Split() method with the newline as a delimiter.
Summary: in this tutorial, you’ll learn various techniques to read text files in C# using File.ReadAllText(), File.ReadAllTextAsync(), File.ReadAllLines(), File.ReadAllLinesAsync() method, and FileStream class.
24 lip 2024 · By utilizing classes like StreamReader and methods like File.ReadAllLines, you can easily read text files with minimal memory overhead and maximum efficiency. Start implementing these best practices in your C# projects to enhance file reading operations and improve overall application performance.
19 gru 2023 · Here’s the new code: IEnumerable<string> fileContents = File.ReadLines ("C:\\files\\example.txt"); var index = 1; foreach (string line in fileContents) { Console.WriteLine ($"Line # {index}: "); Console.WriteLine (line); Console.WriteLine (); } If you run the code, you’ll see that the result is exactly the same.
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. } This avoids loading the entire file, and uses an existing .Net function to do so.
