Carrotware.CMS.Core.ExtendedUserData.GetSiteList C# (CSharp) Метод

        public List<SiteData> GetSiteList()
        {
            using (CarrotCMSDataContext _db = CarrotCMSDataContext.Create()) {
                return (from m in _db.carrot_UserSiteMappings
                        join s in _db.carrot_Sites on m.SiteID equals s.SiteID
                        where m.UserId == this.UserId
                        select new SiteData(s)).ToList();
            }
        }

        protected void Page_Load(object sender, EventArgs e)
        {
            Master.ActivateTab(AdminBaseMasterPage.SectionID.UserAdmin);

            userID = GetGuidIDFromQuery();

            btnApply.Visible = SecurityData.IsAdmin;

            if (!IsPostBack) {
                if (userID != Guid.Empty) {
                    var dsRoles = SecurityData.GetRoleListRestricted();
                    ExtendedUserData exUsr = new ExtendedUserData(userID);

                    CheckBox chkSelected = null;

                    gvSites.Visible = false;

                    if (SecurityData.IsAdmin) {
                        gvSites.Visible = true;

                        GeneralUtilities.BindDataBoundControl(gvSites, SiteData.GetSiteList());

                        List<SiteData> lstSites = exUsr.GetSiteList();

                        chkSelected = null;

                        if (lstSites.Count > 0) {
                            HiddenField hdnSiteID = null;
                            foreach (GridViewRow dgItem in gvSites.Rows) {
                                hdnSiteID = (HiddenField)dgItem.FindControl("hdnSiteID");
                                if (hdnSiteID != null) {
                                    Guid locID = new Guid(hdnSiteID.Value);
                                    chkSelected = (CheckBox)dgItem.FindControl("chkSelected");
                                    int ct = (from l in lstSites where l.SiteID == locID select l).Count();
                                    if (ct > 0) {
                                        chkSelected.Checked = true;
                                    }
                                }
                            }
                        }
                    }

                    MembershipUser usr = Membership.GetUser(userID);
                    Email.Text = usr.Email;
                    lblUserName.Text = usr.UserName;
                    UserName.Text = usr.UserName;
                    lblUserName.Visible = true;
                    UserName.Visible = false;

                    chkLocked.Checked = usr.IsLockedOut;

                    txtNickName.Text = exUsr.UserNickName;
                    txtFirstName.Text = exUsr.FirstName;
                    txtLastName.Text = exUsr.LastName;
                    reBody.Text = exUsr.UserBio;

                    GeneralUtilities.BindDataBoundControl(gvRoles, dsRoles);

                    chkSelected = null;

                    HiddenField hdnRoleId = null;
                    foreach (GridViewRow dgItem in gvRoles.Rows) {
                        hdnRoleId = (HiddenField)dgItem.FindControl("hdnRoleId");
                        if (hdnRoleId != null) {
                            chkSelected = (CheckBox)dgItem.FindControl("chkSelected");
                            if (Roles.IsUserInRole(usr.UserName, hdnRoleId.Value)) {
                                chkSelected.Checked = true;
                            }
                        }
                    }
                }
            }
        }