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using System;
using System.IO;
int check = 0;
string file = "C:/tmp/io.txt";
StreamWriter writer = File.CreateText(file);
for(int i = 1; i <= 50; i++)
{
writer.WriteLine(i);
}
writer.Close();
StreamReader reader = File.OpenText(file);
string line = reader.ReadLine();
while(line != null)
{
if(check % 5 == 0)
Console.Read();
Console.WriteLine(line);
line = reader.ReadLine();
check++;
}
reader.Close();
File.Delete(file);
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