editpost.cs

一个ASP.NET下的中文内容管理和社区系统

namespace ASPNET.StarterKit.Communities.Discuss {

    using System;
    using System.Web.UI;
    using System.Web.UI.WebControls;
    using ASPNET.StarterKit.Communities;


    //*********************************************************************
    //
    // EditPost Class
    //
    // Represents the Edit Post page. Enables users to edit messages.
    //
    //*********************************************************************

    public class EditPost : ContentEditPage {
    
        string _skinFileName = "Discuss_AddPost.ascx";
        string _sectionContent = "ASPNET.StarterKit.Communities.Discuss.DiscussSection";
 
 
        Label lblUsername;
        TextBox txtTitle;
        TopicPicker dropTopics;
        HtmlTextBox txtBodyText;
        Panel pnlModerateOptions;
        CheckBox chkPinned;
        CheckBox chkAnnouncement;
        CheckBox chkLocked;

        Title lblPreviewTitle;
        DisplayTopic topicPreview;
        PostBodyText lblPreviewBodyText;
 
 
 
        //*********************************************************************
        //
        // ContentPageID Property
        //
        // Stores the ID of the content being edited in View State
        //
        //*********************************************************************

        int ContentPageID {
            get {
                return (int)ViewState["ContentPageID"];
            }
            set { ViewState["ContentPageID"] = value; }
        }




        //*********************************************************************
        //
        // SkinLoadPost
        //
        // The skin load event happens after a page skin has been loaded.
        // Here, we grab the necessary controls from the page skin.
        //
        //*********************************************************************
        void SkinLoadPost(Object s, SkinLoadEventArgs e) {

            // Find Username Label
            lblUsername = (Label)GetControl(e.Skin, "lblUsername");
  
            // Find Title
            txtTitle = (TextBox)GetControl(e.Skin, "txtTitle");

            // Find Topic Picker
            dropTopics = (TopicPicker)GetControl(e.Skin, "dropTopics");

            // Find Body Text
            txtBodyText = (HtmlTextBox)GetControl(e.Skin, "txtBodyText");

            // Find Moderator Panel
            pnlModerateOptions = (Panel)GetControl(e.Skin, "pnlModerateOptions");
            if (objUserInfo.MayEdit || objUserInfo.MayModerate)
                pnlModerateOptions.Visible = true;
            else
                pnlModerateOptions.Visible = false;
            
            
            // Find Pinned Checkbox
            chkPinned = (CheckBox)GetControl(e.Skin, "chkPinned");
            
            // Find Announcement Checkbox
            chkAnnouncement = (CheckBox)GetControl(e.Skin, "chkAnnouncement");

            // Find Announcement Checkbox
            chkLocked = (CheckBox)GetControl(e.Skin, "chkLocked");
           
            // Find Preview Title
            lblPreviewTitle = (Title)GetControl(e.Skin, "lblPreviewTitle");

            // Find the topic preview
            topicPreview = (DisplayTopic)GetControl(e.Skin, "topicPreview");

            // Find Preview Body Text
            lblPreviewBodyText = (PostBodyText)GetControl(e.Skin, "lblPreviewBodyText");
        }
 
 
 
        //*********************************************************************
        //
        // OnLoad Method
        //
        // Assigns values to the controls from the page skin.
        //
        //*********************************************************************

        override protected void OnLoad(EventArgs e) {
            if (!Page.IsPostBack) {
                 // Get the ContentPageID from QueryString
                 ContentPageID = Int32.Parse(Page.Request.QueryString["id"]);
                 
			     // Get the post info
			     PostInfo _postInfo = (PostInfo)DiscussUtility.GetPostInfo(objUserInfo.Username, ContentPageID);

                 EnsureChildControls();

                 // Assign value to topics
                 dropTopics.SelectedTopicID = _postInfo.TopicID;

                 // Assign other form values
                 lblUsername.Text = _postInfo.Author;
                 txtTitle.Text = _postInfo.Title;
                 txtBodyText.Text = _postInfo.BodyText;
                 chkPinned.Checked = _postInfo.IsPinned;
                 chkAnnouncement.Checked = _postInfo.IsAnnouncement;
                 chkLocked.Checked = _postInfo.IsLocked;
            }

        }



        


        //*********************************************************************
        //
        // PreviewPost Method
        //
        // When previewing, we want to transfer everything from 
        // the text boxes to the labels.
        //
        //*********************************************************************
        void PreviewPost(Object s, EventArgs e) {
            lblPreviewTitle.Text = txtTitle.Text;
            if (objSectionInfo.EnableTopics)
                topicPreview.Name = dropTopics.SelectedItem.Text;
            lblPreviewBodyText.Text = txtBodyText.Text; 
        }



        //*********************************************************************
        //
        // SubmitPost Method
        //
        // This method is raised by clicking the Add button in the Add 
        // Post form. It adds the post to the database.
        //
        //*********************************************************************

        void SubmitPost(Object s, EventArgs e) {

            if (Page.IsValid) {
 			         
 			     // Get Topic
 			     int _topicID = -1;
			     if (objSectionInfo.EnableTopics)
			         _topicID = dropTopics.SelectedTopicID;    

           
                // Add to Content Pages
                DiscussUtility.EditPost
                (
                    ContentPageID,
                    objUserInfo.Username,
                    objSectionInfo.ID,
                    _topicID,
                    txtTitle.Text,
                    chkPinned.Checked,
                    chkAnnouncement.Checked,
                    chkLocked.Checked,
                    txtBodyText.Text
                );
    
				// Redirect back to Post Page
				Context.Response.Redirect(CommunityGlobals.CalculatePath(String.Format("{0}.aspx", ContentPageID)));    
    
    
            }
        }


        //*********************************************************************
        //
        // EditPost Constructor
        //
        // Calls the base SkinnedCommunityControl constructor
        // and assigns the default page skin. 
        //
        //*********************************************************************

        public EditPost() : base() {
            // Assign a default skin file name
            SkinFileName = _skinFileName;
            
            // Specify Section Content
            SectionContent = _sectionContent;

            // Wire-up event handlers
            this.SkinLoad += new SkinLoadEventHandler(SkinLoadPost);
            this.Preview += new PreviewEventHandler(PreviewPost);
            this.Submit += new SubmitEventHandler(SubmitPost);
        }





    }
}