Reading Files Using File Methods
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There are two additional methods of reading files which are significantly shorter in terms of syntax.
Consider a file called "text.txt" which has the following content:
text.txt
123First Second Third
File.ReadAllText Method
You can use the File.ReadAllText to retrieve all the text from a file at once:
index.cs
12string text = File.ReadAllText("C:/Users/Admin/Desktop/text.txt"); Console.WriteLine(text);
Output:
First
Second
Third
File.ReadAllLines Method
The File.ReadAllLines method retrieves all text as well, however it returns data in the form of a string array where each element is an individual line from the file:
index.cs
12345string[] lines = File.ReadAllLines("C:/Users/Admin/Desktop/text.txt"); foreach(string line in lines) { Console.WriteLine(line); }
Output:
First
Second
Third
The difference between StreamReader and the File methods is that with StreamReader you have more control over how many lines and which lines we want to read from the file. For example if there's a file with over a million lines and you want to retrieve only the first 1000 lines or some specific lines from the middle of the file then in that case using StreamReader will be much more efficient.
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