C#程序计算文件中的行数
首先，使用StreamWriter类创建文件并向其中添加内容-
using (StreamWriter sw = new StreamWriter("hello.txt")) {
sw.WriteLine("This is demo line 1");
sw.WriteLine("This is demo line 2");
sw.WriteLine("This is demo line 3");
}现在，使用ReadAllLines()方法读取所有行。这样，Length属性将用于获取行数-
int count = File.ReadAllLines("hello.txt").Length;这是完整的代码-
示例
using System;
using System.Collections.Generic;
using System.IO;
public class Program {
public static void Main() {
using (StreamWriter sw = new StreamWriter("hello.txt")) {
sw.WriteLine("This is demo line 1");
sw.WriteLine("This is demo line 2");
sw.WriteLine("This is demo line 3");
}
int count = File.ReadAllLines("hello.txt").Length;
Console.WriteLine("Number of lines: "+count);
}
}输出结果
Number of lines: 3
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