Modify Program Version Number through Registry in C#

After installing the software, it requires an update. Once the update file is complete, the version number of the program in the registry also needs to be modified.

After the software is installed, it will be written into the registry.

Therefore, it is sufficient to modify the DisplayVersion in the registry. Different programs may also require modifications to other attributes, such as Version and DisplayName.

Modifying the registry may require administrative privileges, depending on whether the software is installed for all users or just for the current user.

Each program's KEY is different, and you need to assemble it on your own.

		static void Main(string[] args)
		{
			string code = "4444-4444-4444-4444-4444";
			SearchRegistryKeys(code, new Version(1, 6, 6, 6));
			Console.ReadKey();
		}

		[SupportedOSPlatform("windows")]
		static bool SearchRegistryKeys(string guid, Version newVersion)
		{
			const string LocalMachine = "SOFTWARE\\WOW6432Node\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\{0}";
			const string CurrentUser = "Software\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\{0}";
			try
			{
				// Open the specified subkey
				RegistryKey? baseKey = Registry.LocalMachine.OpenSubKey(string.Format(LocalMachine, guid), writable: true);
				if (baseKey == null)
				{
					baseKey = Registry.CurrentUser.OpenSubKey(string.Format(CurrentUser, guid), writable: true);
				}

				if (baseKey == null) return false;

				// Get all subkey names
				string[] kvs = baseKey.GetValueNames();
				if (kvs.Any(x => x == "DisplayVersion"))
				{
					var version = baseKey.GetValue("DisplayVersion")?.ToString();
					if (version == null) return false;
					baseKey.SetValue("DisplayVersion", newVersion.ToString());
					var name = baseKey.GetValue("DisplayName")?.ToString();
					if (name == null) return false;
					baseKey.SetValue("DisplayName", name.Replace(version, newVersion.ToString()));
				}
				baseKey.Dispose();
				return true;
			}
			catch (Exception ex)
			{
				Console.WriteLine(ex);
				return false;
			}
		}