System.Unauthorizedaccessexception in C#

Question

Well, I’m trying to develop an automatic setup for a program I developed. First, it would create a folder in C:/Filename; then it would download a Github repository as .zip in this folder, then export the zip to it and finally remove .zip. Missing add something to run setup, but the problem is not there.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.IO;
using System.IO.Compression;
using System.Security.AccessControl;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace C_Sharp_WIndowsFormTest
{
    class setup
    {
public static void download(string url, string path, string githubToken)
    {

        using (var client = new System.Net.Http.HttpClient())
        {
            var credentials = string.Format(System.Globalization.CultureInfo.InvariantCulture, "{0}:", githubToken);
            credentials = Convert.ToBase64String(System.Text.Encoding.ASCII.GetBytes(credentials));
            client.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Basic", credentials);
            var contents = client.GetByteArrayAsync(url).Result;
            System.IO.File.WriteAllBytes(path, contents);
        }

    }

    public static void JustDoIt()
    {

        string directory = "C:/NomeDaPasta";
        string githubToken = "MeuGithubToken";
        string url = "UrlDoRepositório";

        if (!Directory.Exists(directory))
        {

            /*## Cria a Pasta##*/

            Directory.CreateDirectory(directory);
            download(url, directory, githubToken);
            ZipFile.ExtractToDirectory("C:/NomeDaPasta/Repositório.zip", directory);

            /*## Deleta o zip ##*/
            File.SetAttributes(directory, FileAttributes.Normal);
            File.Delete("C:/NomeDaPasta/Repositório.zip");

            /*## Final (Deleta a pasta) ##*/
            Directory.Delete(directory);


        }
        else
        {

            MessageBox.Show("Folder already exists!");
            Directory.Delete(directory);
            JustDoIt();

        }

    }

    static void Main(string[] args)
    {

        try
        {

            JustDoIt();             

        } catch (Exception e)
        {

            MessageBox.Show(e.ToString());

        }

    }

}

}

NOTE: I just copied the code from Download someone else.

This is the code, but when executing it, it returns me the following error:

System.UnauthorizedAccessException: O acesso ao caminho 'C:/NomeDaPasta' foi negado.

I’ve looked for help, but I didn’t succeed. Please, someone help me!

Answer 1

You can run your application as an administrator. In fact, Voce can indicate that the application should be executed only with administrator rights. For this, Voce has to create a manifesto for its application .

And you have to change permissions to administrator

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

Source

To avoid executing your application as an administrator write elsewhere such as

Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData)

Answer 2

Replace these points:

string directory = @"C:\\NomeDaPasta";

string caminhoZip = @"C:\\NomeDaPasta\\Repositório.zip";

ZipFile.ExtractToDirectory(caminhoZip, directory);

File.Delete(caminhoZip);

Answer 3

You need to edit folder security options, because the process that is calling folder creation and deletion functions does not have the Read and/or write credentials to perform such an operation.

You can confirm this by changing the path to a generic to take the test:

string directory = @"C:\\Users\\Public\\Teste";

With this path (which by the way is more accessible), you will be able to generate what you need.