An error in creating file in c#.net

Question

I tried to create a file with File.Create but I get an error. I can't fix that. I searched for this problem and found this code and I copied it to Visual Studio but it still has this error :

An unhandled exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll

Additional information: Access to the path 'C:\aaa.txt' is denied.

My code:

string path = "C:\\aaa.txt";

if (File.Exists(path))
{
    Console.WriteLine("file exist");
}
else
{
    using (FileStream fs = File.Create(path))
    {
        Byte[] info = new UTF8Encoding(true).GetBytes("This is some text in the file.");

        fs.Write(info, 0, info.Length);
    }
}

Try not writing to the root !!

TaW
– TaW

2018-04-08 17:08:59 +00:00
Commented Apr 8, 2018 at 17:08 — TaW
– TaW, Commented Apr 8, 2018 at 17:08

Dour High Arch · Accepted Answer · 2018-04-08 19:48:57Z

3

Stop trying to create files at the root of drive C:; standard users are forbidden from that, and it's a bad idea even for administrators. If this is a user's file put it in the user's folder:

string path = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments), "aaa.txt");

If it's not a user file look through the Environment.SpecialFolder values to find the folder to put it in.

edited Apr 8, 2018 at 19:48

answered Apr 8, 2018 at 17:13

Dour High Arch

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1 Comment

amir mehr Over a year ago

I tried to create in other folder . It worked . thank

Aousaf Rashid · Accepted Answer · 2018-04-08 17:06:41Z

-1

I hope you understand the error but in simple words it means that you don't have the permission to modify/write to the path.

So,why not just run your app as administrator ?..

Create an application manifest file(Right click project > Add > New Item > Application Manifest file) and add this :

   <requestedExecutionLevel level="requireAdministrator" uiAccess="false" />

One last thing, if you really want to create a simple text file,why not just use one line code such as File.WriteAllTexr ??

answered Apr 8, 2018 at 17:06

Aousaf Rashid

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2 Comments

amir mehr Over a year ago

I add it in manifest but doesn't worked . I am learning c#.net so i am beginner at it and i don't know a lot of code in dot net

Aousaf Rashid Over a year ago

I wish i could invite you on skype but i don't know if it is the right thing to do .... Also i cannot explain it all here as it may become huge..However, you cannot even reply to SO chat because you have vere few reputation

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