How to Set Internet explorer proxy from code behind

using Microsoft.Win32;

private void SetIeProxy(string Proxy)
 {
         RegistryKey registry = Registry.CurrentUser.OpenSubKey("Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings", true);
         registry.SetValue("ProxyServer", Proxy);
         registry.SetValue("ProxyEnable", 1);
 
         // These lines implement the Interface in the beginning of program
         // They cause the OS to refresh the settings, causing IP to realy update
         bool settingsReturn = InternetSetOption(IntPtr.Zero, INTERNET_OPTION_SETTINGS_CHANGED, IntPtr.Zero, 0);
         bool refreshReturn = InternetSetOption(IntPtr.Zero, INTERNET_OPTION_REFRESH, IntPtr.Zero, 0);
 }