V c#, ako môžem otestovať/get/set kľúče databázy Registry, ktoré môžu alebo nemôžu existovať?

Question 1

Potrebujem na testovanie tlačidlo, nastavte kľúč, a vymaž kľúč a vo všetkých prípadoch celú cestu a kľúčové hodnoty nemusí v skutočnosti neexistuje. Myslel som si, že príkazy by predstavujú, že vrátením false, ak je časť cesta neexistuje na kontrolu a vytvoriť cestu na súbor, ak je to neplatili, ale že sa zdá, že nie je prípad.

        
        internal bool DownloadGroupByOff()
        {
            using (RegistryKey hku = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry64))
            {
                using (RegistryKey explore = hku.OpenSubKey(@"Software\Microsoft\Windows\Shell\Bags\AllFolders\Shell\{885A186E-A440-4ADA-812B-DB871B942259}"))
                {
                    if (GetValueInt(explore,"GroupView") == 0)
                        return true;
                }
            }
            return false;
        }

        public void DownloadGroupByEnable()
        {
            using (RegistryKey hku = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry64))
            {
                using (RegistryKey explore = hku.OpenSubKey(@"Software\Microsoft\Windows\Shell\Bags\AllFolders\Shell\{885A186E-A440-4ADA-812B-DB871B942259}", true))
                {
                    explore.DeleteValue("GroupView");
                    explore.DeleteValue("Mode");
                }
            }
        }

        public void DownloadGroupByDisable()
        {
            using (RegistryKey hku = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry64))
            {
                using (RegistryKey explore = hku.OpenSubKey(@"Software\Microsoft\Windows\Shell\Bags\AllFolders\Shell\{885A186E-A440-4ADA-812B-DB871B942259}", true))
                {
                    explore.SetValue("", "Downloads");
                    explore.SetValue("GroupView", "0");
                    explore.SetValue("Mode", "4");
                }
            }
        }

Takže to, čo by som chcel vedieť, je najčistejší spôsob, ako zvládnuť tento problém. Mohol by som napísať rýchly funkciu, ktorá rozbije cesty nahor, testy každej úrovni, a dodáva registry, ak tam ešte nie je, ale radšej by som to urobiť, že ak tam je viac elegantné alebo vstavaný spôsob, ako to urobiť.

Question 2

Ok, som bol lov okolo a našli čistý spôsob, ako to urobiť.

Najprv som vytvoril funkciu test potom vytvoriť v prípade potreby:

        // Helper because apparently it won't do this on its own
        public RegistryKey openCreate(RegistryKey baseKey, string path)
        {
            RegistryKey test = baseKey.OpenSubKey(path);

            var reg = baseKey.OpenSubKey(path, true);
            if (reg == null)
            {
                reg = baseKey.CreateSubKey(path);
            }
            return reg;
        }

Potom som ju používať a dopĺňa takto:

        internal bool DownloadGroupByOff()
        {
            // Using "using" to handle auto-close when it leaves this code block (so we don't have to manually close before returning)
            using (RegistryKey localMachine = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry64))
            {
                using (RegistryKey explore = localMachine.OpenSubKey(@"Software\Microsoft\Windows\Shell\Bags\AllFolders\Shell\{885A186E-A440-4ADA-812B-DB871B942259}")){
                    if (explore == null || GetValueInt(explore, "GroupView") != 0)
                        return false;
                }               
                using (RegistryKey explore = localMachine.OpenSubKey(@"Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{885A186E-A440-4ADA-812B-DB871B942259}")){
                    if (explore == null || GetValueInt(explore, "GroupView") != 0)
                        return false;
                }               
                using (RegistryKey explore = localMachine.OpenSubKey(@"Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlgLegacy\{885A186E-A440-4ADA-812B-DB871B942259}")){
                    if (explore == null || GetValueInt(explore, "GroupView") != 0)
                        return false;
                }
                return true;
            }
        }
        public void DownloadGroupByEnable()
        {
            RegistryKey localMachine = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry64);
            // Adding false to this command says not to throw an exception if the key doesn't exist - just ignore
            localMachine.DeleteSubKeyTree(@"Software\Microsoft\Windows\Shell\Bags\AllFolders\Shell\{885A186E-A440-4ADA-812B-DB871B942259}", false);
            localMachine.DeleteSubKeyTree(@"SOFTWARE\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{885a186e-a440-4ada-812b-db871b942259}", false);
            localMachine.DeleteSubKeyTree(@"Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlgLegacy\{885A186E-A440-4ADA-812B-DB871B942259}", false);
            localMachine.Close();
        }

        public void DownloadGroupByDisable()
        {
            RegistryKey localMachine = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry64);
            
            RegistryKey explore = openCreate(localMachine,@"SOFTWARE\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{885a186e-a440-4ada-812b-db871b942259}");
            explore.SetValue("", "Downloads");
            explore.SetValue("GroupView", "0");
            explore.SetValue("Mode", "4");
            explore.Close();

            explore = openCreate(localMachine, @"SOFTWARE\Microsoft\Windows\Shell\Bags\AllFolders\ComDlgLegacy\{885a186e-a440-4ada-812b-db871b942259}");
            explore.SetValue("", "Downloads");
            explore.SetValue("GroupView", "0");
            explore.SetValue("Mode", "4");
            explore.Close();

            explore = openCreate(localMachine, @"SOFTWARE\Microsoft\Windows\Shell\Bags\AllFolders\Shell\{885a186e-a440-4ada-812b-db871b942259}");
            explore.SetValue("", "Downloads");
            explore.SetValue("GroupView", "0");
            explore.SetValue("Mode", "4");
            explore.Close();

            localMachine.Close();
        }

Som otvorený návrhy na nejaký spôsob, ako to môže byť zlepšená/vyčistené.

not_a_generic_user · Answer 1 · 2021-11-17T17:14:58

Ok, som bol lov okolo a našli čistý spôsob, ako to urobiť.

Najprv som vytvoril funkciu test potom vytvoriť v prípade potreby:

        // Helper because apparently it won't do this on its own
        public RegistryKey openCreate(RegistryKey baseKey, string path)
        {
            RegistryKey test = baseKey.OpenSubKey(path);

            var reg = baseKey.OpenSubKey(path, true);
            if (reg == null)
            {
                reg = baseKey.CreateSubKey(path);
            }
            return reg;
        }

Potom som ju používať a dopĺňa takto:

        internal bool DownloadGroupByOff()
        {
            // Using "using" to handle auto-close when it leaves this code block (so we don't have to manually close before returning)
            using (RegistryKey localMachine = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry64))
            {
                using (RegistryKey explore = localMachine.OpenSubKey(@"Software\Microsoft\Windows\Shell\Bags\AllFolders\Shell\{885A186E-A440-4ADA-812B-DB871B942259}")){
                    if (explore == null || GetValueInt(explore, "GroupView") != 0)
                        return false;
                }               
                using (RegistryKey explore = localMachine.OpenSubKey(@"Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{885A186E-A440-4ADA-812B-DB871B942259}")){
                    if (explore == null || GetValueInt(explore, "GroupView") != 0)
                        return false;
                }               
                using (RegistryKey explore = localMachine.OpenSubKey(@"Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlgLegacy\{885A186E-A440-4ADA-812B-DB871B942259}")){
                    if (explore == null || GetValueInt(explore, "GroupView") != 0)
                        return false;
                }
                return true;
            }
        }
        public void DownloadGroupByEnable()
        {
            RegistryKey localMachine = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry64);
            // Adding false to this command says not to throw an exception if the key doesn't exist - just ignore
            localMachine.DeleteSubKeyTree(@"Software\Microsoft\Windows\Shell\Bags\AllFolders\Shell\{885A186E-A440-4ADA-812B-DB871B942259}", false);
            localMachine.DeleteSubKeyTree(@"SOFTWARE\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{885a186e-a440-4ada-812b-db871b942259}", false);
            localMachine.DeleteSubKeyTree(@"Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlgLegacy\{885A186E-A440-4ADA-812B-DB871B942259}", false);
            localMachine.Close();
        }

        public void DownloadGroupByDisable()
        {
            RegistryKey localMachine = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry64);
            
            RegistryKey explore = openCreate(localMachine,@"SOFTWARE\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{885a186e-a440-4ada-812b-db871b942259}");
            explore.SetValue("", "Downloads");
            explore.SetValue("GroupView", "0");
            explore.SetValue("Mode", "4");
            explore.Close();

            explore = openCreate(localMachine, @"SOFTWARE\Microsoft\Windows\Shell\Bags\AllFolders\ComDlgLegacy\{885a186e-a440-4ada-812b-db871b942259}");
            explore.SetValue("", "Downloads");
            explore.SetValue("GroupView", "0");
            explore.SetValue("Mode", "4");
            explore.Close();

            explore = openCreate(localMachine, @"SOFTWARE\Microsoft\Windows\Shell\Bags\AllFolders\Shell\{885a186e-a440-4ada-812b-db871b942259}");
            explore.SetValue("", "Downloads");
            explore.SetValue("GroupView", "0");
            explore.SetValue("Mode", "4");
            explore.Close();

            localMachine.Close();
        }

Som otvorený návrhy na nejaký spôsob, ako to môže byť zlepšená/vyčistené.

V c#, ako môžem otestovať/get/set kľúče databázy Registry, ktoré môžu alebo nemôžu existovať?

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