private void BindGrid()
    {
        List <Field> fields = Field.Fields;

        GridTeachers.DataSource = fields;
        GridTeachers.DataBind();
    }
    private void bindGrid()
    {
        List <AuthorProfile> tchs = new List <AuthorProfile>();
        int count = 0;

        foreach (MembershipUser user in Membership.GetAllUsers())
        {
            AuthorProfile ap = AuthorProfile.GetProfile(user.UserName);
            if (ap != null && ap.IsTeacher && !ap.IsAdmin && ap.IsPrivate && ap.IsGoldTch)
            {
                tchs.Add(ap);
                count++;
                if (count == 3)
                {
                    break;
                }
            }
        }
        GridTeachers.DataSource = tchs;
        GridTeachers.DataBind();
    }