creating then writing to file c#

Question

in my little console app for c# I have to write to a file, and if it is not there i have to create it. It works fine when the file is already created, but when i try and create the file then write to it i get a System.IO.IOException saying the file is in use elsewhere.Here is what i've been using

if (!File.Exists(FilePath))
{
    File.Create(FilePath);
}
FileInfo file = new FileInfo(FilePath);
using (TextWriter tw = new StreamWriter(file.Open(FileMode.Truncate)))
{
    tw.Write(filePresent);
    tw.Close();
}

score 7 · Accepted Answer · answered Feb 23 '15 at 14:35

File.Create returns a FileStream - but you're not closing that.

To be honest, you'd be better off replacing all this code with just:

File.WriteAllText(FilePath, filePresent);

That will create a file if necessary, and truncate it if it already exists. It will close the stream when it's written the data. Simpler all round.

creating then writing to file c#

1 Answers1