C#控制台基础 streamreader 中的readline方法读取指定txt文件的第一行

 1 using System;
 2 using System.Collections.Generic;
 3 using System.IO;
 4 using System.Linq;
 5 using System.Text;
 6 using System.Threading.Tasks;
 7 
 8 namespace ConsoleApplication4
 9 {
10     class Program
11     {
12         static void Main(string[] args)
13         {
14             using (StreamReader sReader = new StreamReader(@"1.txt", Encoding.Default))
15             {
16                 string aLine = sReader.ReadLine();
17                 Console.WriteLine(aLine);
18             }
19             Console.ReadKey();
20         }
21     }
22 }