/// <summary>
/// Determines whether a user can take the poll or if the results must be shown.
/// My implementation only allows authenticated users who have not already taken the poll to vote.
/// EXTENSION POINT: If you want to modify what users can take the poll (such as allowing
/// anonymous users), modify the CanUserTakePoll() method...)
/// </summary>
/// <returns>true if user can vote</returns>
private bool CanUserTakePoll()
{
// Anonymous visitors cannot take poll
if (!Request.IsAuthenticated)
{
return(false);
}
// Determine if this user has already taken this poll... if so, they cannot retake it.
MembershipUser currentUser = Membership.GetUser();
if (currentUser != null)
{
if (currentUser.ProviderUserKey != null)
{
var userId = (int)currentUser.ProviderUserKey;
return(Polls.CanUserTakePoll(PollId, userId));
}
}
return(false);
}
