c#如何计算文本文件中的行数

using System;
using System.IO;

class Program
{
    static void Main(string[] args)
    {
        string filePath = "example.txt";
        int lineCount = CountLines(filePath);
        Console.WriteLine($"文件 {filePath} 中的行数为：{lineCount}");
    }

    static int CountLines(string filePath)
    {
        int count = 0;
        using (StreamReader sr = new StreamReader(filePath))
        {
            string line;
            while ((line = sr.ReadLine()) != null)
            {
                count++;
            }
        }
        return count;
    }
}