Error unzip my file in "C:\\Program Files (x86)" , No permissions

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Hello all , i am doing a project that unzips a .zip file to the path "C:\\Program Files (x86)".
It returns the error : An unhandled exception of type 'System.UnauthorizedAccessException' occurred in Ionic.Zip.dll
I search a lot but i can´t understand a way to resolve this problem.
Help me please .

My code :

C#

namespace UTAD__VPN_w7
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
             
        }

        private void buscarpasta()
        {
            DialogResult result = this.folderBrowserDialog1.ShowDialog();
            if (result == DialogResult.OK)
            {
                
                /*string pedro = folderBrowserDialog1.SelectedPath;
                string pedro2 = pedro.Replace("\\", "\\\\");
                textBox1.Text = pedro2;*/
                string pasta1 = folderBrowserDialog1.SelectedPath;
                var pasta2 = pasta1.Replace(@"\", @"\\");
                textBox1.Text = pasta2;

            }
        }
       
        private void MyExtract()
        {


            string zipToUnpack = "C:\\Users\\Zé Eduardo\\Music\\Cisco.zip";
            string unpackDirectory = textBox1.Text;
            using (ZipFile zip1 = ZipFile.Read(zipToUnpack))
            {
                // here, we extract every entry, but we could extract conditionally
                // based on entry name, size, date, checkbox status, etc.  
                foreach (ZipEntry e in zip1)
                {
                    
                    e.Extract(unpackDirectory, ExtractExistingFileAction.OverwriteSilently);
                }
            }
        }





        private void button1_Click(object sender, EventArgs e)
        {
            buscarpasta();
           
                

           
        }

I get the path with the folderbrowserdialog1 and then i unzip clicking the button 1

Posted 10-May-13 4:16am

Pedro Brito

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6 solutions

Solution 1

check that you have rights for that directory

Posted 10-May-13 4:20am

datt265

Solution 6

Ok , i understand you all , so how can the installers like Ccleaner and other install their software to that path?

Posted 10-May-13 4:27am

Pedro Brito

Comments

Ron Beyer 10-May-13 10:42am

Installers usually require or request administrative privileges for installation.

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OriginalGriff · Accepted Answer · 2013-05-10T04:21:00

You cannot under normal circumstances have write access to the Program Files folder on OS's from Vista on up. The idea is that it reduces the incidence of virus activity, since you should not need to write there.

So you basically have two options:
1) Upgrade your application access to Admin (which will mean the user giving his permission in the same way that he has to for installations, and for the same reason)
2) Find somewhere better to extract your files. If they are data files, then they really, really shouldn't be under the Program Files folder at all - access restrictions here will only get stronger, not weaker so you will have more problems in the future, not less. For data file, consider moving them here: Where should I store my data?[^]

Dave Kreskowiak · Accepted Answer · 2013-05-10T04:23:00

Users don't have Write permissions to Program Files. It's that way for a reason. You shouldn't be writing anything to any folders under Program Files in your application. The data should be written to more accessible and appropriate locations. Check the Environment.SpecialFolder enum[^] documentation for a list of those folders and what they are intended for.

E.F. Nijboer · Accepted Answer · 2013-05-10T04:24:00

Older windows versions have no security implications that prevent overwriting program files. Nowadays there are some restrictions and one of it is that a normal user can't overwrite program files, and therefor applications started by the user also can't. You need to run as administrator or write it to the folder of the user. You can find it using this:

C#

string applicationDataPath=
   Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);

You could also add a manifest, requesting administrator privileges:
http://msdn.microsoft.com/en-us/library/bb756929.aspx[^]

Good luck!

Pedro Brito · Accepted Answer · 2013-05-10T04:22:00

Solution 3

I think that for default microsoft windows don´t five rights to that directory , i want to turn on permissions to that path with code in C# , i search a lot and i found some codes, but i can´t implement them.

Posted 10-May-13 4:22am

Pedro Brito

Error unzip my file in "C:\\Program Files (x86)" , No permissions

6 solutions

Solution 2

Solution 1

Solution 4

Solution 5

Solution 3

Solution 6

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