CODEWITHSUNDEEP
c#.netpermissions
user2961759
user2961759

Reputation: 137

C# - Show "Get file permission" dialog to get access

I want to be able to have my user get read/write privileges to folders that they don't have access to without them having to do extra work. I'd like for the box to appear below, then they can simply hit "continue", then the program will progress.

I'm able to make the box appear by using

Process.Start(filePath);

but then that also opens the folder, which is a bit clunky. Is there a way to just show this dialog, wait for the user to interact, then continue execution?

enter image description here

Upvotes: 1

Views: 1006

Answers (1)

profesor79
profesor79

Reputation: 9473

What I will do in this case:

test permission on file, you can add what ever is needed (read, execute, traverse)

public static bool HasWritePermissionOnDir(string path)
{
    var writeAllow = false;
    var writeDeny = false;
    var accessControlList = Directory.GetAccessControl(path);
    if (accessControlList == null)
        return false;
    var accessRules = accessControlList.GetAccessRules(true, true, 
                                typeof(System.Security.Principal.SecurityIdentifier));
    if (accessRules ==null)
        return false;

    foreach (FileSystemAccessRule rule in accessRules)
    {
        if ((FileSystemRights.Write & rule.FileSystemRights) != FileSystemRights.Write) 
            continue;

        if (rule.AccessControlType == AccessControlType.Allow)
            writeAllow = true;
        else if (rule.AccessControlType == AccessControlType.Deny)
            writeDeny = true;
    }

    return writeAllow && !writeDeny;
}

source

then if there is no access 

// Add the access control entry to the file.
AddFileSecurity(fileName, @"DomainName\AccountName",
                FileSystemRights.ReadData, AccessControlType.Allow);

FileSystemRights - set as needed source

Put all operations in try-catch blocks as dealing with files are always gona to have issues :-)

Ensure that you user has a privilege to change permissions (run as Admin)

Upvotes: 1

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