Iterate through registry entries

Question

As suggested here, I need to iterate through entries in

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ 

to find out the installed path of my application. How to iterate so that I can find out the InstallLocation value given the DisplayName. How to do it efficiently in C#.

Answer 1

using (RegistryKey key = Registry.LocalMachine.OpenSubKey(@"Whater\The\Key")) {   if (key != null)   {     foreach (string ValueOfName in key.GetValueNames())     {       try       {          bool Value = bool.Parse((string)key.GetValue(ValueOfName));       }       catch (Exception ex) {}     }  } } 

With a bool cast :D - so the string is expected to be True or False.

For the user registry hive use Registry.CurrentUser instead of Registry.LocalMachine

Answer 2

Below is code to achieve your goal:

class Program {     static void Main(string[] args)     {         RegistryKey key = Registry.LocalMachine.OpenSubKey("Software\\Microsoft\\Windows\\CurrentVersion\\Uninstall");         foreach (var v in key.GetSubKeyNames())         {             Console.WriteLine(v);              RegistryKey productKey = key.OpenSubKey(v);             if (productKey != null)             {                 foreach (var value in productKey.GetValueNames())                 {                     Console.WriteLine("\tValue:" + value);                      // Check for the publisher to ensure it's our product                     string keyValue = Convert.ToString(productKey.GetValue("Publisher"));                     if (!keyValue.Equals("MyPublisherCompanyName", StringComparison.OrdinalIgnoreCase))                         continue;                      string productName = Convert.ToString(productKey.GetValue("DisplayName"));                     if (!productName.Equals("MyProductName", StringComparison.OrdinalIgnoreCase))                         return;                      string uninstallPath = Convert.ToString(productKey.GetValue("InstallSource"));                      // Do something with this valuable information                 }             }         }          Console.ReadLine();     } } 

Edit: See this method for a more comprehensive way to find an Applications Install Path, it demonstrates the using disposing as suggested in the comments. https://stackoverflow.com/a/26686738/495455