Text file line count statistics method

Statistics the number of lines of text files is a common task in programming. Here are a few efficient methods:

1. Use File.ReadAllLines():

If efficiency is not the main problem, this method is concise and clear:

var lineCount = File.ReadAllLines(@"C:\file.txt").Length;

Although convenient, this method loads the entire file into memory, which can cause performance issues for large files.

2. Use StreamReader:

For efficiency, especially when dealing with large files, it is recommended to use StreamReader:

var lineCount = 0;
using (var reader = File.OpenText(@"C:\file.txt"))
{
    while (reader.ReadLine() != null)
    {
        lineCount  ;
    }
}

This method iterates line by line to avoid memory consumption problems.

Memory usage and efficiency:

It is worth noting that while the first method is convenient, it consumes more memory by storing the entire file in an array. The second method uses less memory, but may not be efficient for smaller files.

in conclusion:

method depends on the specific requirements of the task. For small files where memory usage is not a problem, the first approach is a quick solution. For large files, the second method is more efficient in memory consumption.