I cant write to text file

Question

Hello everyone My all codes are below. This codes are creating mac.txt file but I cant write any data in this file. I dont know what is the problem? using System.Text; using System.Windows.Forms; using System.IO; private void button1_Click(object sender EventArgs e) { StreamWriter dosya = new StreamWriter(mac.txt); dosya.WriteLine(1231231231); dosya.Write(123123123); }

Vulpes · Answer

You're not closing the stream which will automatically flush the buffer to disk: StreamWriter dosya = new StreamWriter(mac.txt); dosya.WriteLine(1231231231); dosya.Write(123123123); dosya.Close(); Another way to automatically close the stream is to use the 'using' statement: using (StreamWriter dosya = new StreamWriter(mac.txt)) { dosya.WriteLine(1231231231); dosya.Write(123123123); }

omkar mhaiskar · Answer

Dear Sleepy just go through with your following code:- string strFileName = mac.txt; FileStream fileStream = new FileStream(strFileName FileMode.OpenOrCreate); StreamWriter streamWriter = new StreamWriter(fileStream); streamWriter.BaseStream.Seek(0 SeekOrigin.End); //contents = contents.Replace(@date DateTime.Today.ToString(dd/MM/yyyy)); streamWriter.WriteLine( 1231231231 ); streamWriter.Write( 1231231231 ); streamWriter.Flush(); streamWriter.Close();

Sam Hobbs · Answer

I hope that Flush gets called as you say. It should work that way but .Net does some unusual things that create extra work for us. I have in the past had a problem with data being lost (not written) until I called Flush. Perhaps I did not call Close but if so then I am disappointed that Dispose or whatever it is that de-allocates the object does not do the Close.

Vulpes · Answer

If you look at the StreamWriter.Close() method with a disassembler such as Redgate Reflector then it calls Dispose(true) which in turn calls Flush() before closing the stream. This is consistent with what it says in the MSDN documentation ( http://msdn.microsoft.com/en-us/library/system.io.streamwriter.close.aspx ). Despite this I've noticed that many people adopt a 'belt and braces' approach of calling Flush() first and then Close().

Sam Hobbs · Answer

Based on my experience closing the file does not flush the buffer.