adminforumpostlisting.cs

微软的.NET论坛的源代码（COOL!!!）

        // ********************************************************************/		
        private void BindData() {

            PostCollection posts;

            // Make sure all of our child controls have been created
            this.EnsureChildControls();			

            // Get info about the forum
            Forum forum = Forums.GetForumInfo(ForumID);

            int iUserTimeZone = Globals.DBTimezone;

            // Read in user information, if applicable and set iUserTimeZone
            if (Context.User.Identity.Name.Length > 0)
                iUserTimeZone = ((User) Users.GetUserInfo(Context.User.Identity.Name, true)).Timezone;

            // Get all of the messages for the forum
            if (ViewMode == ViewOptions.NotSet)
                posts = Posts.GetAllMessages(ForumID, ViewOptions.Threaded, 0);
            else
                posts = Posts.GetAllMessages(ForumID, ViewMode, 0);


            // Bind the data
            dlForumView.DataSource = posts;
            dlForumView.DataBind();

        }


        // *********************************************************************
        //
        //  CreateChildControls
        //
        /// <summary>
        /// This event handler adds the children controls.
        /// </summary>
        //
        // ********************************************************************/	
        protected override void CreateChildControls() {

            Panel panelTmp;
            Label lblTmp;
            Button btnTmp;
            
            // Is this user an administrator?
            if (this.CheckUserPermissions && !((User) Users.GetUserInfo(Context.User.Identity.Name, true)).IsAdministrator)
                Context.Response.Redirect(Globals.UrlMessage + Convert.ToInt32(Messages.UnableToAdminister));

            // Make sure we have a valid ForumID
            if (ForumID == -1)
                throw new Exception("The ForumView control requires that you pass in a valid ForumID.  No such value was passed in.");

            // Create the panel
            panelTmp = new Panel();
            panelTmp.ID = "panelPosts";

            // if the user indicated to show the forum title, do that now.
            if (ShowForumTitle) {

                lblTmp = new Label();
                lblTmp.ID = "txtForumTitle";
                lblTmp.CssClass = "head";
                panelTmp.Controls.Add(lblTmp);

            }

            // add a Refresh button
            btnTmp = new Button();
            btnTmp.CssClass = "normalButton";
            btnTmp.Text = "Refresh Post Listings for this Forum";
            btnTmp.ToolTip = "Click to update the below view of posts for this forum.";
            btnTmp.Click += new EventHandler(ButtonRefresh_Click);
            panelTmp.Controls.Add(btnTmp);

            // Add to the control collection of the panel
            panelTmp.Controls.Add(dlForumView);

            // Add the panel to the parent controls collection
            Controls.Add(panelTmp);

            // create the confirm delete panel
            CreateConfirmDeletePanel();

        }

	

        // *********************************************************************
        //
        //  OnPreRender Event Handler
        //
        /// <summary>
        /// This event handler binds the template to the datalist - this action
        ///	is only carried out if the user DID NOT specify an ItemTemplate.
        ///	In such a case, the default databinding is used.
        /// </summary>
        /// <param name="e"></param>
        //
        // ********************************************************************/
        protected override void OnPreRender(EventArgs e) {

            // bind the data on our first load
            if (!Page.IsPostBack) 
                BindData();

        }


        // *********************************************************************
        //
        //  OnPreRender Event Handler
        //
        /// <summary>
        ///	This event handler fires when the user clicks the Refresh button.  All
        ///	we need to do is rebind the data.
        /// </summary>
        //
        // ********************************************************************/
        private void ButtonRefresh_Click(Object sender, EventArgs e) {

			BindData();

		}
		


        // *********************************************************************
        //
        //  PostAction_Click Event Handler
        //
        /// <summary>
        /// This event handler fires when the user clicks one of the two ImageButtons
        /// (edit/delete) or when the user clicks the "Confirm Delete" button in
        ///	the Confirm Delete panel.  Appropriate action is taken based upon
        ///	the user's command.
        ///	</summary>
        //
        // ********************************************************************/
        private void PostAction_Click(Object sender, CommandEventArgs e) {

            // Read in the postID
            int iPostID = Convert.ToInt32(e.CommandArgument);

            // Decide what action to take
            switch (e.CommandName) {

                // Edit the post, so send the user to the proper URL
                case "edit":
                Context.Response.Redirect(Globals.UrlEditPostFromAdmin + iPostID.ToString() + "&ForumID=" + ForumID.ToString());
                break;


                // Delete the post, hide/show the appropriate panels
                case "delete":
                ((Panel) FindControl("panelConfirmDelete")).Visible = true;
                ((Panel) FindControl("panelPosts")).Visible = false;

                // set the Confirm Delete button's CommandArgument to the PostID passed in
                ((Button) FindControl("btnConfirmDelete")).CommandArgument = iPostID.ToString();
                break;

                // Delete the post
                case "confirmdelete":
                if (deletePostStyle.ShowReasonsForDeletingTextBox)
                    Posts.DeletePost(iPostID, ((TextBox) FindControl("txtDeleteReason")).Text, "undone");
                else
                    Posts.DeletePost(iPostID, "undone", "undone");

                // Show the posts
                ((Panel) FindControl("panelConfirmDelete")).Visible = false;
                ((Panel) FindControl("panelPosts")).Visible = true;

                // rebind the data
                BindData();		
                break;
            }
        }

        
        // *********************************************************************
        //
        //  ButtonCancelDelete_Click Event Handler
        //
        /// <summary>
        /// This event handler fires when the user clicks the Cancel Delete button.
        /// It hides/shows the appropriate panels and rebinds the data.
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        //
        // ********************************************************************/
        private void ButtonCancelDelete_Click(Object sender, EventArgs e) {

            // flip the panel visibility back
            ((Panel) FindControl("panelConfirmDelete")).Visible = false;
            ((Panel) FindControl("panelPosts")).Visible = true;

            // rebind the data
            this.BindData();

        }


        // *********************************************************************
        //
        //  CreateConfirmDeletePanel
        //
        /// <summary>
        /// This function creates the controls for the delete post panel.  The Delete
        ///	Post panel is displayed when the user clicks on the "Delete Post" link.
        ///	It pops up two buttons, a cancel and confirm, allowing the user to
        ///	ensure that they do, indeed, want to delete the post.
        /// </summary>
        /// 
        // ********************************************************************/
        void CreateConfirmDeletePanel() {

            // Start off by creating the panel control
            Panel panelTmp = new Panel();
            panelTmp.ID = "panelConfirmDelete";
            panelTmp.Visible = false;

            Label lblTmp;
            Button btnTmp;

            panelTmp.Controls.Add(new LiteralControl("<table class=\"postText\" align=\"center\" border=\"0\"><tr><th>\n"));

            // Create the header title
            lblTmp = new Label();
            lblTmp.Text = "DELETING A MESSAGE";
            lblTmp.CssClass = "head";
            panelTmp.Controls.Add(lblTmp);

            panelTmp.Controls.Add(new LiteralControl("\n</th></tr>\n<tr><td align=\"center\">"));

            // Display the reasons why (or why not) to delete the post.  Also notify the user that
            // deleting a post will delete all of its children (replies).
            lblTmp = new Label();
            lblTmp.Text = deletePostStyle.DeletePostText + Globals.HtmlNewLine + Globals.HtmlNewLine +
            "<b>Also, all of this post's replies will be deleted as well.</b>" + Globals.HtmlNewLine + Globals.HtmlNewLine ;
            lblTmp.ApplyStyle(deletePostStyle);
            panelTmp.Controls.Add(lblTmp);

            // Create the cancel button
            btnTmp = new Button();
            btnTmp.ID = "btnCancelDelete";
            btnTmp.Text = "Cancel Delete";	
            btnTmp.CssClass = "normalButton";
            btnTmp.ToolTip = "Click this to cancel the delete, leaving this post in-tact.";
            btnTmp.Click += new EventHandler(ButtonCancelDelete_Click);			
            panelTmp.Controls.Add(btnTmp);

            panelTmp.Controls.Add(new LiteralControl("&nbsp;&nbsp;&nbsp;"));

            // Create the confirm button
            btnTmp = new Button();
            btnTmp.ID = "btnConfirmDelete";
            btnTmp.Text = "Confirm Delete";	
            btnTmp.CssClass = "normalButton";
            btnTmp.ToolTip = "Click this to permanently delete the post.";
            btnTmp.Command += new CommandEventHandler(PostAction_Click);
            btnTmp.CommandName = "confirmdelete";
            panelTmp.Controls.Add(btnTmp);

            // Display a textbox for the reason why a post was deleted, 
            // only if ShowReasonsForDeletingTextBox is true
            if (deletePostStyle.ShowReasonsForDeletingTextBox) {

                // Show the "Reasons for Deleting" message
                lblTmp = new Label();
                lblTmp.Text += Globals.HtmlNewLine + Globals.HtmlNewLine + deletePostStyle.ReasonsTextBoxMessage + Globals.HtmlNewLine;
                lblTmp.ApplyStyle(deletePostStyle);
                panelTmp.Controls.Add(lblTmp);

                // Create the reasons textbox
                TextBox txtTmp = new TextBox();
                txtTmp.ID = "txtDeleteReason";
                txtTmp.TextMode = TextBoxMode.MultiLine;
                txtTmp.ApplyStyle(deletePostStyle);
                txtTmp.Columns = deletePostStyle.ReasonsTextBoxColumns;
                txtTmp.Rows = deletePostStyle.ReasonsTextBoxRows;
                panelTmp.Controls.Add(txtTmp);

                panelTmp.Controls.Add(new LiteralControl("</td></tr><tr><td align=\"center\">\n\t"));

            }

            panelTmp.Controls.Add(new LiteralControl("\n</td></tr></table>"));
            Controls.Add(panelTmp);
        } 


        // *********************************************************************
        //
        //  DisplayIndent
        //
        /// <summary>
        /// This functions simply renders the html needed for the identation for
        ///	a particular item in a post.  Only called if displaying a threaded forum
        /// </summary>
        /// <param name="iPostLevel"></param>
        /// <returns>String</returns>
        //
        // ********************************************************************/
        private String DisplayIndent(int iPostLevel) {

            String retVal = "";			

            // if we're showing a new thread, display the thread separator
            if (iPostLevel == 1)
                retVal += ThreadSeparator;

            // display the appropriate number of idents based on the PostLevel
            for (int iLoop=0; iLoop < iPostLevel-1; iLoop++)
                retVal += IndentString;

            // Add the LiteralControl to the Controls collection
            return retVal;

        }


        // *********************************************************************
        //
        //  ForumID
        //