Developer's Guide - EPiServer World

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104 | Developer’s Guide EPiServer Community 3.1 Get the Current State In the example below, we will create a table of integer values that represent percentage distribution of votes among poll choices. In a real life scenario, these numbers can be used e.g. to display a percentage bar chart that will show how people voted in this poll. // Get the poll get state Poll poll = PollHandler.GetPoll(11); // Create table to keep the percentages int[] percentage = new int[poll.Choices.Count]; int choiceVoteCount = 0; int totalVotes = poll.VotesCount; // Fill the table with calculated percentages for( int ix = 0; ix < poll.Choices.Count; ix++ ) { choiceVoteCount = poll.Choices[ix].VoteCount; percentage[ix] = (int)((((float)choiceVoteCount)/totalVotes)*100); } After a poll ha been retrieved from the database, we have access to all the properties of the poll itself, as well as its choices. There is no need to use other PollHandler methods to retrieve information about the poll – the properties provide all necessary data. 2.25.5 Adding Choices after Creation The poll choices do not have to be added before the poll is committed in the database. It is possible to create a poll with its text (a question), and after that to add choices (e.g. after a research on what choices are available). This example will present how to update a poll with new choices. Import Necessary Namespaces First, import the necessary namespaces that will be used to add choices to a poll. The namespace StarCommunity.Modules.Poll is described by clicking on its name. Make sure you add the assembly as a reference, mentioned in section 1.1.1. using StarCommunity.Modules.Poll; © EPiServer AB
Tutorials | 105 2.25.6 Add Choices to Existing Poll First, we will need to retrieve the Poll object from the database. After that, we can create as many Choice objects as we need and add them to the Choices collection of the Poll object. When all Choice objects have been added, we need to save the changes in the database – we use the UpdatePoll method of the PollHandler class. The PollHandler adds, updates or removes any changed choices within the Poll. // Retrieve Poll from the database Poll poll = (Poll)PollHandler.GetPoll(33).Clone(); // Determine current maximum choice order int maxOrder = 0; foreach( Choice ch in poll.Choices ) { if ( ch.Order > maxOrder ) maxOrder = ch.Order; } // Create two additional choices to add – when creating Choice // set text and order Choice choice1 = new Choice("Added choice 1", ++maxOrder); Choice choice2 = new Choice("Added choice 2", ++maxOrder); // Add choices to the poll poll.Choices.Add( choice1 ); poll.Choices.Add( choice2 ); // Commit poll object in database poll = PollHandler.UpdatePoll(poll); © 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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Page 75 and 76: Tutorials | 57 2.14.5 Configuration
Page 77 and 78: Tutorials | 59 Then we get the cont
Page 79 and 80: Tutorials | 61 To get a UserCollect
Page 81 and 82: Tutorials | 63 Now we are ready to
Page 83 and 84: Tutorials | 65 Folder inbox = dmc.G
Page 85 and 86: Tutorials | 67 Then we remove it: D
Page 87 and 88: 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: Tutorials | 103 Voting in a Poll To
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 and 140: Tutorials | 121 Note that it is rec
Page 141 and 142: Extending EPiServer Community | 123
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Developer's Guide - EPiServer World

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