rename a txt file in c drive: unauthorized access error

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C#

static void Main(string[] args)
        {
            
            File.Move(@"c:\windows\a.txt",@"c:\windows\b.txt");
            Console.Write("done");
        }

Posted 28-Aug-14 22:00pm

anandd.mohit

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anandd.mohit 29-Aug-14 4:27am

private void Form1_Load(object sender, EventArgs e)
{

Microsoft.VisualBasic.FileIO.FileSystem.RenameFile(@"c:\windows\a.txt",@"a.txt");
MessageBox.Show("done");
}

error again same as previous

4 solutions

Solution 1

The error explains it; you are unauthorized to move the file, you don't have access. To solve this, you have to run your program as administrator.

Posted 28-Aug-14 22:07pm

Thomas Daniels

v2

Solution 2

The Windows directory is a system folder: you need full authority to make any changes there, and renaming a file is a change: this is a security precaution to reduce the damage that "rogue applications" can do. You cannot bypass this except to elevate your application, which will require the UAE and user approval.

Please, don't store text files in any old folder: use a sensible place that will remain usable in future versions of the operating system.
This should help: Where should I store my data?[^]

Posted 28-Aug-14 22:10pm

OriginalGriff

v2

Solution 4

thanks for reply
i already run it as admin.

Posted 28-Aug-14 22:17pm

anandd.mohit

Updated 28-Aug-14 22:18pm

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Aravindba · Accepted Answer · 2014-08-28T22:11:00

Hi First try in local drive like D,E ,other than OS drive it will work or not ?
or

Try this code

C#

Use the VB assembly in C# Add reference to Microsoft.VisualBasic

then to rename a file

Microsoft.VisualBasic.FileIO.FileSystem.RenameFile(myfile, newName);

Both are strings, note that myfile has the full path. newName does not. for example

a="C:\whatever\a.txt";
b="b.txt";
Microsoft.VisualBasic.FileIO.FileSystem.RenameFile(a, b);
C:\whatever\ folder will now contain b.txt

Regards
Aravind