C# StreamReader
C# StreamReader class is used to read string from the stream. It inherits TextReader class. It provides Read() and ReadLine() methods to read data from the stream.
C# StreamReader example to read one line
Let's see the simple example of StreamReader class that reads a single line of data from the file.
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();
}
}
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();
}
}
Output:
Hello C#
C# StreamReader example to read all lines
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();
}
}
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();
}
}
Output:
Hello C#
this is file handling
this is file handling
