Check Application Installed in C#

Use the Following function to check the application is installed in User System or not. This code reference is taken from below link :
http://stackoverflow.com/questions/16379143/check-if-application-is-installed-in-registry


public static bool checkInstalled (string c_name)
{
            string displayName;

            string registryKey = @"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall";
            RegistryKey key = Registry.LocalMachine.OpenSubKey(registryKey);
            if (key != null)
            {
                foreach (RegistryKey subkey in key.GetSubKeyNames().Select(keyName => key.OpenSubKey(keyName)))
                {
                    displayName = subkey.GetValue("DisplayName") as string;

                    if (displayName != null && displayName.Contains(c_name))
                    {
                        return true;
                    }
                }
                key.Close();
            }

            registryKey = @"SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall";
            key = Registry.LocalMachine.OpenSubKey(registryKey);
            if (key != null)
            {
                foreach (RegistryKey subkey in key.GetSubKeyNames().Select(keyName => key.OpenSubKey(keyName)))
                {
                    displayName = subkey.GetValue("DisplayName") as string;

                    if (displayName != null && displayName.Contains(c_name))
                    {
                        return true;
                    }
                }
                key.Close();
            }
            return false;

}

and Use this as follow

if(checkInstalled("Application Name"))