/// 08/04/2022 Mahesh Kumar Yadav. <br/>

        /// <summary>

        /// Check app is installed or not

        /// </summary>

        /// <param name="cName">Application name</param>

        /// <returns></returns>

        public static bool IsAppInstalled(string cName)

        {

            string displayName;

​

            var registryKey = @"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall";

            var key = Registry.LocalMachine.OpenSubKey(registryKey);

            if (key != null)

            {

                foreach (var subKey in key.GetSubKeyNames().Select(keyName => key.OpenSubKey(keyName)))

                {

                    displayName = subKey?.GetValue("DisplayName") as string;

​

                    if (displayName != null && displayName.Contains(cName))

                    {

                        return true;

                    }

                }

​

                key.Close();

            }

​

            registryKey = @"SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall";

            key = Registry.LocalMachine.OpenSubKey(registryKey);

            if (key == null) return false;

            {

                foreach (var subKey in key.GetSubKeyNames().Select(keyName => key.OpenSubKey(keyName)))

                {

                    displayName = subKey?.GetValue("DisplayName") as string;

                    if (displayName != null && displayName.Contains(cName))

                    {

                        return true;

                    }

                }

​

                key.Close();

            }

            return false;

        }