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Update email?

Posted By:      Posted Date: October 04, 2010    Points: 0   Category :ASP.Net
I have this code and I'm logged in to the site. Now I want to update my email, but that will not work. Alla other properties are updateed, but not my email. Any ideas why?
private string firstName, lastName, address, zipCode, city, phone, cellPhone, eMail;
public string Email
        get { return eMail; }
        set { eMail = value; }

public ProfileWrapper()
        ProfileCommon profile = HttpContext.Current.Profile as ProfileCommon;
        firstName = profile.FirstName;
        lastName = profile.LastName;
        address = profile.Address;
        zipCode = profile.ZipCode;
        city = profile.City;
        phone = profile.Phone;
        cellPhone = profile.CellPhone;
        newsLetter = profile.NewsLetter;
        wantSms = profile.WantSms;
        eMail = Membership.GetUser(profile.UserName).Email;

    public void UpdateProfile()
        ProfileCommon profile = HttpContext.Current.Profile as ProfileCommon;
        profile.FirstName = firstName;
        profile.LastName = lastName;
        profile.Address = address;
        profile.ZipCode = zipCode;
        profile.City = city;
        profile.Phone = phone;
        profile.CellPhone = cellPhone;
        profile.NewsLetter = newsLetter;

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