//**************************************************************
// InitializeKeyCheck()
//**************************************************************
public void InitializeKeyCheck()
{
//Clear any previous app domain
UnInitializeKeyCheck();
AD = AppDomain.CreateDomain("KeyValidatorDomain");
BindingFlags flags = (BindingFlags.Public | BindingFlags.Instance | BindingFlags.CreateInstance);
ObjectHandle objh = AD.CreateInstance( "AppUpdater", "Microsoft.Samples.AppUpdater.KeyValidator", false,
flags, null, null, null, null, null);
// Unwrap the object
Object obj = objh.Unwrap();
// Cast to the actual type
Validator = (KeyValidator)obj;
KeyList = GetKeyList(AppUrl.TrimEnd(new char[] {'/'}) + "/" + KEYFILENAME);
}