WebApr 23, 2014 · using (FileStream stream = new FileStream(path, FileMode.Open)) { long endpos = stream.Length / charsize; for (long pos = charsize; pos < endpos; pos += charsize) { stream.Seek (-pos, SeekOrigin.End); stream.Read (buffer, 0, buffer.Length); if (encoding.GetString (buffer) == newline) { buffer = new byte[stream.Length - … WebAug 5, 2009 · This depends on what class you are using to read the file. Here are the most common: Stream (or a derived type): Read (byte [], int, int) returns zero. TextReader (or a derived type): ReadLine returns null, Read () returns -1, Read (char [], int, int) returns zero. BinaryReader: PeekChar and Read () return -1. Other forms of Read return zero.
How to read ONLY the last line out of a very big text file
WebNov 15, 2005 · you are at the end of a stream. If you are using a FileStream then you. should use fileStream.Position == fileStream.Length to see if you are at the. end. If you are using a StreamReader you should get access to BaseStream, make sure the CanSeek property returns true, and then check the Position. versus the Length. WebC# public System.Threading.Tasks.Task CopyToAsync (System.IO.Stream destination, System.Threading.CancellationToken cancellationToken); Parameters destination Stream The stream to which the contents of the current stream will be copied. cancellationToken CancellationToken The token to monitor for cancellation requests. The default value is … team fenex
Appending bytes to filestream object in c#
WebNov 1, 2013 · Unfortunately I still see a lot of C# programmers and C# code running .Net 4 (or above) doing the age old “read a line, process line, repeat until end of file” technique instead of “read all the lines into memory and then process”. The performance difference is so great it even makes up for the loss of time when just reading a file. WebApr 3, 2024 · The given program is compiled and executed successfully on Microsoft Visual Studio. //C# program to read data from file //character by character till the end of the file. using System; using System. IO; using System. Text; class Demo { static void Main () { Stream s = new FileStream (@"d:\data.txt", FileMode. Open); int val = 0; char ch; while ... WebSep 12, 2012 · FileStream fs = File.Create (@ "c:\test2.pdf" ); fs.Close (); // Now append each byte array to test2.pdf. fs = new FileStream (@ "C:\test2.pdf" , FileMode.Append); for ( int i = 0; i < BRCOffers.Count; i++) { fs.Write (BRCOffers [i], 0, BRCOffers [i].Length); } fs.Close (); // Open the file in a PDF viewer and a text editor } team fenex trailer