the process cannot access the file because it is being used by another process C#

MisterNick · Nov 6, 2014

Hello guys,

I'm trying to create a file if it's not exists and then write some string to it.But i'm getting an error message "the process cannot access the file because it is being used by another process".

if (File.Exists(file))
{
}
else { File.Create(file);

File.SetAttributes(file, FileAttributes.Hidden);
using (StreamWriter writer = new StreamWriter(file, true))
{
writer.Write("3600");
writer.Close();
}
}

Once program will create the file now it's time to write something to the file.And when program is on writing function it's showing an error message

Avocado Plugins · Dec 7, 2014

First of all how about you revert your logic in say !File.Exists(file) so that you don't have to have that werid empty block (unless you were meant to put something there then it is understandable).

Second assign the File.Create(file) to a variable so you can close and dispose the instance of that down below.

Xp3r7 · Dec 7, 2014

Try to set the attribute to hidden after the writing logic.

if (File.Exists(file)) {
File.Create(file);
using (StreamWriter writer = new StreamWriter(file, true))
{
writer.Write("3600");
writer.Close();
}
File.SetAttributes(file, FileAttributes.Hidden);
else {
Console.WriteLine("{0} does not exists", file);
}

rootjazz · Dec 8, 2014

whats wrong with

Code:

File.WriteAllText(filepath, contents);

also your code is wrong

Code:

using (StreamWriter writer = new StreamWriter(file, true))
{
  writer.Write("3600");
  writer.Close();
}

writer.close is not need as you have the using statement, doubt that is causing the issue, but...

Another way would be to use a lock, have a static object that you can assign a lock to, then any time you want to access the file, lock it, if the file is in use, the lock will pause the execution of the code

Code:

static object locker = new object();

.
..
...
...

lock(locker){
  //all the code you want to do on the file
}

scharp · Aug 2, 2015

Your problem is this:

Code:

if (File.Exists(file))
            {
            }
            else { File.Create(file); }

change it to this

Code:

if (File.Exists(file))
            {
            }
            else { File.Create(file).Close(); }

Chdead · Aug 3, 2015

this is the correct code

if (File.Exists(file)) {
using (StreamWriter writer = new StreamWriter(file, true))
{
writer.Write("3600");
}
else {
Console.WriteLine("{0} does not exists", file);
}

ekapek · Aug 4, 2015

Chdead not really - if file doesn't exist it doesn't create it

bitm0de · Aug 29, 2015

ekapek said:
Chdead not really - if file doesn't exist it doesn't create it

What are you talking about? The StreamWriter instance will create the file...

itz_styx · Sep 8, 2015

try

Code:

var enc = Encoding.ASCII;
if (File.Exists(file))
{
   writer = new StreamWriter(new FileStream(file, FileMode.Append, FileAccess.Write, FileShare.None, 4096, FileOptions.None), enc);
}
else
{
   writer = new StreamWriter(new FileStream(file, FileMode.Create, FileAccess.ReadWrite), enc);
}

the process cannot access the file because it is being used by another process C#

MisterNick

Registered Member

Avocado Plugins

Junior Member

Xp3r7

Regular Member

rootjazz

Elite Member

scharp

Newbie

Chdead

Registered Member

ekapek

Regular Member

bitm0de

Newbie

itz_styx

Elite Member

Main Menu

Marketplace

Making Money

BlackHat World