forumrepeater.cs

微软的.NET论坛的源代码（COOL!!!）

                    } else {
                        img.ImageUrl = Globals.ApplicationVRoot + "/skins/" + SiteStyle + "/images/forum_status.gif";
                    }
                }
            }

        }

        // *********************************************************************
        //  BeginBuildItemTemplate
        //
        /// <summary>
        /// Builds a default Item template if the user does not specify one
        /// </summary>
        /// 
        // ********************************************************************/   
        public virtual Control BeginBuildItemTemplate() {

            Label label;
            PlaceHolder placeHolder = new PlaceHolder();
            TableCell td;
            TableRow tr = new TableRow();

            // Column 1
            td = new TableCell();
            td.CssClass = "forumRow";
            td.HorizontalAlign = HorizontalAlign.Center;
            td.Width = 34;
            td.Wrap = false;
            Image img = new Image();
            img.Width = 34;
            img.DataBinding += new System.EventHandler(HandleDataBindingForStatusImage);
            td.Controls.Add(img);
            tr.Controls.Add(td);

            // Column 2
            td = new TableCell();
            td.CssClass = "forumRow";
            td.Width = Unit.Percentage(80);
            HyperLink link = new HyperLink();
            link.CssClass = "forumTitle";
            link.DataBinding += new System.EventHandler(HandleDataBindingForForumTitle);

            Label forumDescription = new Label();
            forumDescription.CssClass = "normalTextSmall";
            forumDescription.DataBinding += new System.EventHandler(HandleDataBindingForForumDescription);
            td.Controls.Add(link);
            td.Controls.Add(new LiteralControl("<BR>"));
            td.Controls.Add(forumDescription);
            tr.Controls.Add(td);

            // Column 3
            td = new TableCell();
            td.HorizontalAlign = HorizontalAlign.Center;
            td.CssClass = "forumRowHighlight";
            td.DataBinding += new System.EventHandler(HandleDataBindingForTotalThreads);
            tr.Controls.Add(td);

            // Column 4
            td = new TableCell();
            td.HorizontalAlign = HorizontalAlign.Center;
            td.CssClass = "forumRowHighlight";
            td.DataBinding += new System.EventHandler(HandleDataBindingForTotalPosts);
            tr.Controls.Add(td);

            // Column 5
            td = new TableCell();
            td.HorizontalAlign = HorizontalAlign.Center;
            td.CssClass = "forumRowHighlight";
            Label mostRecentPostDate = new Label();
            mostRecentPostDate.CssClass = "normalTextSmaller";
            mostRecentPostDate.DataBinding += new System.EventHandler(HandleDataBindingForMostRecentPost);
            label = new Label();
            label.CssClass = "normalTextSmaller";
            label.DataBinding += new System.EventHandler(HandleDataBindingForPostedBy);
            td.Controls.Add(mostRecentPostDate);
            td.Controls.Add(new LiteralControl("<BR>"));
            td.Controls.Add(label);
            tr.Controls.Add(td);
            
            // Add the Table Row
            placeHolder.Controls.Add(tr);

            return placeHolder;
        }

        // *********************************************************************
        //  BuildItemTemplate
        //
        /// <summary>
        /// Template builder for the ItemTemplate
        /// </summary>
        /// 
        // ********************************************************************/   
        private void BuildItemTemplate(Control _ctrl) {
		
            // add the DataBoundLiteralControl to the parser
            System.Web.UI.IParserAccessor __parser = ((System.Web.UI.IParserAccessor)(_ctrl));
            __parser.AddParsedSubObject(BeginBuildItemTemplate());

        }

        // *********************************************************************
        //  CreateChildControls
        //
        /// <summary>
        /// Override create child controls
        /// </summary>
        /// 
        // ********************************************************************/   
        protected override void CreateChildControls() {
            EnableViewState = false;
            string username = null;

            // determine if we want to bind to the default template or not
            ApplyTemplates();

            if (ForumUser != null)
                username = ForumUser.Username;

            // bind the datalist to the SqlDataReader returned by the GetAllForums() method
            ForumCollection forums;
            Forums f = new Forums();
            try {
                if (ForumGroupID == 0) {

                    if (showAllForums)
                        forums = Forums.GetAllForums(true, username);
                    else
                        forums = Forums.GetAllForums(false, username);

                    forums.Sort();
                    DataSource = forums;
                } else {
                    if (showAllForums)
                        DataSource = f.GetForumsByForumGroupId(ForumGroupID, username, true);
                    else
                        DataSource = f.GetForumsByForumGroupId(ForumGroupID, username);
                }
            } catch (Components.ForumNotFoundException fnf) {
                Page.Response.Redirect(Globals.UrlMessage + Convert.ToInt32(Messages.UnknownForum));
                Page.Response.End();
            }

            this.DataBind();
        }

        // *********************************************************************
        //  ApplyTemplates
        //
        /// <summary>
        /// Applies templates to control the ui generated by the control. If no
        /// template is specified a custom template is used. If a template is found
        /// in the skins directory, that template is loaded and used. If a user defined
        /// template is found, that template takes priority.
        /// </summary>
        /// 
        // ********************************************************************/
        public virtual void ApplyTemplates() {
            string pathToHeaderTemplate;
            string pathToItemTemplate;
            string pathToAlternatingItemTemplate;
            string pathToFooterTemplate;
            string keyForHeaderTemplate;
            string keyForItemTemplate;
            string keyForAlternatingItemTemplate;
            string keyForFooterTemplate;
            
            // Are we using skinned template?
            if (Page != null) {

                // Set the file paths to where the templates should be found
                pathToHeaderTemplate = Globals.ApplicationVRoot + "/Skins/" + SiteStyle + "/Templates/ForumRepeater-Header.ascx";
                pathToItemTemplate = Globals.ApplicationVRoot + "/skins/" + SiteStyle + "/Templates/ForumRepeater-Item.ascx";
                pathToAlternatingItemTemplate = Globals.ApplicationVRoot + "/skins/" + SiteStyle + "/Templates/ForumRepeater-AlternatingItem.ascx";
                pathToFooterTemplate = Globals.ApplicationVRoot + "/skins/" + SiteStyle + "/Templates/ForumRepeater-Footer.ascx";

                // Set the file paths to where the templates should be found
                keyForHeaderTemplate = SiteStyle + "/Templates/ForumRepeater-Header.ascx";
                keyForItemTemplate = SiteStyle + "/Templates/ForumRepeater-Item.ascx";
                keyForAlternatingItemTemplate = SiteStyle + "/Templates/ForumRepeater-AlternatingItem.ascx";
                keyForFooterTemplate = SiteStyle + "/Templates/ForumRepeater-Footer.ascx";

                // Attempt to get the skinned header template
                if (HeaderTemplate == null)
                    HeaderTemplate = Globals.LoadSkinnedTemplate(pathToHeaderTemplate, keyForHeaderTemplate, Page);

                // Attempt to get the skinned item template
                if (ItemTemplate == null)
                    ItemTemplate = Globals.LoadSkinnedTemplate(pathToItemTemplate,keyForItemTemplate, Page);

                // Attempt to get the skinned item template
                if (AlternatingItemTemplate == null)
                    AlternatingItemTemplate = Globals.LoadSkinnedTemplate(pathToAlternatingItemTemplate,keyForAlternatingItemTemplate, Page);

                // Attempt to get the footer template
                if (FooterTemplate == null)
                    FooterTemplate = Globals.LoadSkinnedTemplate(pathToFooterTemplate, keyForFooterTemplate, Page);
            }

            // No skinned or user defined template, load the default
            if (ItemTemplate == null)
                ItemTemplate = new CompiledTemplateBuilder(new BuildTemplateMethod(BuildItemTemplate));

        }

        // *********************************************************************
        //  ShowAllForums
        //
        /// <summary>
        /// Returns forums that are not active - however, will not return forums that
        /// the user's credentials do not have permissions to.
        /// </summary>
        /// 
        // ********************************************************************/   
        public bool ShowAllForums {
            get { return showAllForums; }
            set { showAllForums = value; }
        }
    }
}