c#读取文本文件的行数

要在C#中读取文本文件的行数，可以使用以下代码：

using System;
using System.IO;

class Program
{
    static void Main(string\[\] args)
    {
        string filePath = "L:\\Code\\1.txt"; // 文件路径
        int lineCount = GetLineCount(filePath); // 调用方法获取行数
        Console.WriteLine("该文件一共有" + lineCount + "行");
        Console.ReadKey();
    }

    public static int GetLineCount(string filePath)
    {
        int lineCount = 0;
        using (StreamReader sr = new StreamReader(filePath))
        {
            while (sr.ReadLine() != null)
            {
                lineCount++;
            }
        }
        return lineCount;
    }
}

以上代码中，`GetLineCount`方法接收一个文件路径作为参数，使用`StreamReader`读取文件的每一行，并通过计数器统计行数。最后返回行数。在`Main`方法中，我们调用`GetLineCount`方法并输出行数。请注意，你需要将文件路径`filePath`替换为你实际的文件路径。\[1\]
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