C# StreamReader
C# StreamReader
C# StreamReader 类用于从流中读取字符串。它继承了 TextReader 类。它提供了 Read() 和 ReadLine() 方法来从流中读取数据。
C# StreamReader 示例读取一行
我们来看 StreamReader 的简单示例从文件中读取一行数据的类。
using System;
using System.IO;
public class StreamReaderExample
{
public static void Main(string[] args)
{
FileStream f = new FileStream("e:\\output.txt", FileMode.OpenOrCreate);
StreamReader s = new StreamReader(f);
string line=s.ReadLine();
Console.WriteLine(line);
s.Close();
f.Close();
}
}
输出:
C# StreamReader 示例读取所有行
using System;
using System.IO;
public class StreamReaderExample
{
public static void Main(string[] args)
{
FileStream f = new FileStream("e:\\a.txt", FileMode.OpenOrCreate);
StreamReader s = new StreamReader(f);
string line = "";
while ((line = s.ReadLine()) != null)
{
Console.WriteLine(line);
}
s.Close();
f.Close();
}
}
输出:
Hello C#
this is file handling
