crecode.com

Inside a CSK Module in .NET Encoder Code39 in .NET Inside a CSK Module




How to generate, print barcode using .NET, Java sdk library control with example project source code free download:
Inside a CSK Module using barcode implement for visual .net control to generate, create code 39 extended image in visual .net applications. Microsoft Official Website communityDefault.aspx The default community page takes care of a number of items, including writing out meta tags. The most important job this page performs is loading the page skin and the page content. Let"s review the following lines of code from communityDefault.

aspx.cs:. // Load the Page Skin 39 barcode for .NET objPageSkin = LoadControl( CommunityGlobals.AppPath + "/Communities/" + objSectionInfo.

Skin + "/Skins/PageSkins/Default.ascx" ); // Add the Page Content Page Part objPagePart = (PlaceHolder)objPageSkin.FindControl( "content" ); if (objPagePart != null) { Control objPageContent = (Control)Activator.

CreateInstance( Type.GetType( objPageInfo.Content, true ) ); objPagePart.

Controls.Add( objPageContent ); }. The first step is to d ynamically load a control: the page skin control. Given the default installation and the URL we looked at before, the skin file should resolve to Communities/Common/Themes/Default/Skins/PageSkins/Default.ascx.

This skin gives us the default layout for the page: where the menu appears, where the logo appears, and where the content appears. The skin and the style together customize nearly every visual aspect of the CSK content. The skin does not know what content will appear.

The content could be a list of books or a single article. Every Default.ascx page skin needs to define a placeholder where the content will appear similar to the following:.

<div class="Content"> <asp:PlaceHolder id="Content" Runat="Server" /> </div> The communityDefault.a spx code will find the content placeholder control and dynamically load a web control into the spot with the Activator class. The Activator class requires a parameter of type System.

Type. We can construct the type object from the name of the object we wish to load. The name of the object is kept in the PageInfo object"s Content property, which ultimately came from the pagetype_pageContent column in the Community_PageTypes table.

Given a content page ID, you can find the content page type using the following SQL query:. SELECT pagetype_pageCo .net framework USS Code 39 ntent FROM Community_PageTypes PT INNER JOIN Community_ContentPages PG ON PG.contentPage_pageType = PT.

pageType_ID WHERE PG.contentPage_ID = 3. The result for content Page_ID=3 is ASPNET.StarterKit.Communities.

Articles.Article. The code passes this string to the GetType method, which returns a Type object for the Activator class.

The Activator finds this class in the CSK assembly and invokes the default constructor to create an instance of the class. Finally, the code can add this new object to the Controls collection of the placeholder and the control will appear on the page in the correct position. This is the beauty of the CSK controls and skins are dynamically loaded in data-driven code.

The two important pieces, the skin and the content, are outlined in the following figure:. 7 . Now we understand how an Article object appears on the web page, and the ultimate purpose of the PageInfo and SectionInfo objects prepared by the HttpModule. We will see more of these objects, however, and we still need to detail how the Article object works..

Article Content Control Content controls come in many forms. Examples of content controls in the CSK include a control to allow users to log in, a control to let users register, and, of course, a control to display an article. Most of the module controls such as the one to display an article and the one to display a book are extremely similar.

These controls move information from the ContentInfo derived objects to the screen, and they load their own skin. Since these classes are so similar, we again find a class hierarchy where reusable, generic code exists in a base class for other classes to derive from. The following figure shows the inheritance hierarchy the Article content class builds on:.

Inside a CSK Module All of the content con trols, from Login to Article, derive from the SkinnedCommunityControl class, which in turn derives from the .NET Framework WebControl class. This class takes care of a number of mundane chores; for example, the constructor retrieves references to all of the objects stored in the HttpContext Items collection:.

public SkinnedCommunit Code 39 for .NET yControl() { if (Context != null) { objUserInfo = (UserInfo)HttpContext.Current.

Items[ "UserInfo" ]; objPageInfo = (PageInfo)HttpContext.Current.Items[ "PageInfo" ]; objSectionInfo = (SectionInfo)HttpContext.

Current.Items[ "SectionInfo" ]; objCommunityInfo = (CommunityInfo)HttpContext.Current.

Items[ "CommunityInfo" ]; } }. A SkinnedCommunityCont rol object"s primary purpose is to find and load the ASCX file (skin) for itself. This skin file will contain all of the controls required to display the content the user is looking for. The content may be an article or the user registration form.

The class is an abstract class, meaning you cannot directly instantiate an object of type SkinnedCommunityControl. Instead, you must derive from the class and override any abstract members. We will focus on three properties and one method of the class to see how it locates the correct skin file.

The SkinName property represents which skin directory to look in for the ASCX file. The SkinName could point to any of the directories underneath Communities\Common\Themes (Default, Arc, Cruise, Eco, Frida, Library, Professional, or Robotico). Of course, you can add your own theme directory in customizing the CSK.

The SkinName property defaults to the skin settings for the current section (obtained from the sectionInfo object)..
Copyright © crecode.com . All rights reserved.