I cant write to text file

yokzu

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");
        }

5 Replies

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Vulpes15y ago
Accepted 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");
}
0
Sam Hobbs15y ago
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.
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Vulpes15y ago
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().
0
Sam Hobbs15y ago
Based on my experience, closing the file does not flush the buffer.
0
omkar mhaiskar15y ago
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();
0