notify.cs

一个ASP.NET下的中文内容管理和社区系统

namespace ASPNET.StarterKit.Communities {

    using System;
    using System.Web.UI.WebControls;
    using System.ComponentModel;


    //*********************************************************************
    //
    // Notify Class
    //
    // WebControl that displays a checkbox indicating whether or not
    // user has requested a notification email when new items are listed. 
    //
    //*********************************************************************
    public class Notify : CheckBox {
    
        SectionInfo objSectionInfo;   
        PageInfo objPageInfo;
        UserInfo objUserInfo;
        
    
        //*********************************************************************
        //
        // Notify Constructor
        //
        // Retrieves the UserInfo, SectionInfo, and PageInfo objects
        // from context. This control hides itself if notification
        // is not enabled for this section.
        //
        //*********************************************************************

        public Notify() : base() {
            if (Context != null) {
                objSectionInfo = (SectionInfo)Context.Items["SectionInfo"];
                objPageInfo = (PageInfo)Context.Items["PageInfo"];
                objUserInfo = (UserInfo)Context.Items["UserInfo"];
            
                // hide me if notification or comments not enabled 
                if (!objSectionInfo.EnableNotifications || (!objSectionInfo.EnableComments && objPageInfo.ID != -1))
                    Visible = false;
            }
    
            // Enable autopostback                
            AutoPostBack = true;
        }
 

    
        //*********************************************************************
        //
        // OnLoad Method
        //
        // Checks the checkbox when the user has asked to be notified.
        //
        //*********************************************************************

        protected override void OnLoad(EventArgs e) {
            if (!Page.IsPostBack)
                Checked = NotifyUtility.GetNotificationStatus(objPageInfo.ID, objSectionInfo.ID, objUserInfo.Username);
            
            // call base method
            base.OnLoad(e); 
        }
       

    
        //*********************************************************************
        //
        // OnCheckedChanged Method
        //
        // Changes notification status for user in database.
        // If the user is not authenticated, redirects to login page.
        //
        //*********************************************************************
        
        protected override void OnCheckedChanged(EventArgs e) {
            // Check if authenticated
            if (!objUserInfo.IsAuthenticated)
                CommunityGlobals.ForceLogin();

            // Update Database
            NotifyUtility.UpdateNotificationStatus(objPageInfo.ID, objSectionInfo.ID, objUserInfo.Username, Checked); 
                
        
            // call base method
            base.OnCheckedChanged(e);
        }
        
        
        
    }
}