public string MiddleLinesExample()
{
var path = @"Logs/logfile.txt";
var top = 0L;
var bottom = 0L;
var start = (new System.IO.FileInfo(path)).Length / 2; // middle of file
var lines = new List <string>();
using (var reader = new System.IO.StreamReverseReader(path))
{
reader.Seek(start); // set start position
reader.ReadLine(); // read and discard (potentially) partial line
top = reader.Position(); // position of first line in list
while (!reader.EndOfStream && lines.Count < 10)
{
lines.Add(reader.ReadLine());
}
bottom = reader.Position(); // position after last line in last
}
var result = $"Read position first line: {top}\n";
result += $"Read position after last line: {bottom}\n";
result += $"Number of lines read: {lines.Count()}\n";
result += string.Join("\n", lines);
return(result);
}
public string LastLinesExample()
{
var lines = new List <string>();
using (var reader = new System.IO.StreamReverseReader(@"Logs/logfile.txt"))
{
while (!reader.EndOfStream && lines.Count < 10)
{
lines.Add(reader.ReadLine());
}
}
return(string.Join("\n", lines));
}
