Developer's Guide - EPiServer World

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122 | Developer’s Guide EPiServer Community 3.1 © EPiServer AB
Extending EPiServer Community | 123 3 Extending EPiServer Community 3.1 Extending EPiServer Community classes This tutorial describes howto create a derived class with custom attributes, and that exposes those attributes as fixed properties in the derived class. This is in many cases a more elegant approach than accessing the attributes directly via the attribute name. In this tutorial we assume that we have a community implementation that requires the EntryComment class in Blog to have an ImageGallery connected to it, where users can upload pictures when commenting an Entry. One way of accomplishing this would of course be to just add an attribute to the EntryComment as described in section 2.5 and be done with it. However, there is a more elegant way to use attributes without the need of keeping track of the attribute names in your ASP.NET page. We start by creating a new class derived from EntryComment. using System.Collections.Generic; using StarCommunity.Modules.Blog; using StarCommunity.Modules.ImageGallery; namespaceMyCommunity { //Inherit the EntryComment class public class MyEntryComment : EntryComment { // The constructor takes DbDataReader and passes it to base class public MyEntryComment(DbDataReader reader) : base(reader) { } // Define the ImageGallery property for get and set public ImageGallery ImageGallery { get{return this.getAttributeValue("attr_ig");} set{blog.entity.SetAttributeValue("attr_ig",value));} } } } © EPiServer AB
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Release 3.1.0 Developer’s Guide
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Table of Contents | 3 Table of Cont
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Basic Understanding | 5 2.10.5 Addi
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Basic Understanding | 7 1 Basic Und
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Basic Understanding | 9 1.2.2 EPiSe
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Basic Understanding | 11 StarCommun
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Basic Understanding | 13 1.2.4 EPiS
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Basic Understanding | 15 If MyClass
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Basic Understanding | 17 1.3.4 Star
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Basic Understanding | 19 1.3.18 Sta
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Table of Contents | 3 2 Tutorials 2
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Tutorials | 5 Note that when changi
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Tutorials | 7 IUser user = (IUser)S
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Tutorials | 9 user.BirthDate = new
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Tutorials | 11 Attaching the Group
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Tutorials | 13 The Tag object is de
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Tutorials | 15 2.3.4 Retrieving ent
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Tutorials | 17 //Get the category b
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Tutorials | 19 2.6 Queries The Quer
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Tutorials | 21 2.6.4 Remove Query R
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Tutorials | 23 // Create a blog ent
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Tutorials | 25 Below an example of
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Tutorials | 27 The logging frequenc
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Tutorials | 29 Committing the chang
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Tutorials | 31 Get All Blog Entries
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Tutorials | 33 2.10 Calendar Calend
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Tutorials | 35 Create a New Event C
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Tutorials | 37 Create Recurrent Eve
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Tutorials | 39 Import Necessary Nam
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Tutorials | 41 2.11 Chat The Chat M
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Tutorials | 43 2.11.2 Base The base
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Tutorials | 45 2.11.5 MessageBox Th
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Tutorials | 47 2.12.2 Removing a Cl
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Tutorials | 49 Adding an Ad with an
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Tutorials | 51 Import Necessary Nam
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Tutorials | 53 Get the contact rela
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Tutorials | 55 Then create a new Co
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Tutorials | 57 2.14.5 Configuration
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Tutorials | 59 Then we get the cont
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Tutorials | 61 To get a UserCollect
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Tutorials | 63 Now we are ready to
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Tutorials | 65 Folder inbox = dmc.G
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Tutorials | 67 Then we remove it: D
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Tutorials | 69 2.17.6 Configuration
Page 89 and 90: Tutorials | 71 2.18.2 Add a Member
Page 91 and 92: Tutorials | 73 Check if a User is a
Page 93 and 94: Tutorials | 75 Assign a Question To
Page 95 and 96: Tutorials | 77 Get Questions Assign
Page 97 and 98: Tutorials | 79 2.19 Forum Forums ar
Page 99 and 100: Tutorials | 81 Locking the Topic To
Page 101 and 102: Tutorials | 83 2.19.7 Removing a Re
Page 103 and 104: Tutorials | 85 First we need the Im
Page 105 and 106: Tutorials | 87 To begin with, we ne
Page 107 and 108: Tutorials | 89 2.21 Moblog The Mobl
Page 109 and 110: Tutorials | 91 2.22 MyPage The EPiS
Page 111 and 112: Tutorials | 93 Getting Blocked User
Page 113 and 114: Tutorials | 95 2.23 NML NML is a ma
Page 115 and 116: Tutorials | 97 Limiting Maximum Wor
Page 117 and 118: Tutorials | 99 Getting a User’s L
Page 119 and 120: Tutorials | 101 Add a Poll In this
Page 121 and 122: Tutorials | 103 Voting in a Poll To
Page 123 and 124: Tutorials | 105 2.25.6 Add Choices
Page 125 and 126: Tutorials | 107 Import Necessary Na
Page 127 and 128: Tutorials | 109 2.27.2 Adding video
Page 129 and 130: Tutorials | 111 Calling AddVideo pr
Page 131 and 132: Tutorials | 113 2.27.6 Get preview
Page 133 and 134: Tutorials | 115 2.28 Webmail Webmai
Page 135 and 136: Tutorials | 117 Import Necessary Na
Page 137 and 138: Tutorials | 119 Accessing a Mailbox
Page 139: Tutorials | 121 Note that it is rec
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Developer's Guide - EPiServer World

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