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

[MisterNick]

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]

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]

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]

whats wrong with

File.WriteAllText(filepath, contents);

also your code is wrong

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

static object locker = new object();

.
..
...
...

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

 

[scharp]

Your problem is this:

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

change it to this

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

 

[Chdead]

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]

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

 

[bitm0de]

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]

try

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);
}