Developer's Guide - EPiServer World

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86 | Developer’s Guide EPiServer Community 3.1 Note that the image object at this point only exists in memory, and we need to call the AddImage method in the ImageGalleryHandler to commit it: image = ImageGalleryHandler.AddImage( image ); Note that the AddImage method returns the committed object with the unique ID property set. 2.20.4 Removing an Image Removing an existing image is done via the ImageGalleryHandler. Import Necessary Namespaces First import the necessary namespaces that will be used to manage image galleries. The namespace StarCommunity.Modules.ImageGallery is described by clicking on its name. Make sure you add the assemblies as a reference, mentioned in Setting up Visual Studio. using StarCommunity.Modules.ImageGallery; First we get the Image object to remove: Image image = ImageGalleryHandler.GetImage( 1234 ); Then we remove it: ImageGalleryHandler.RemoveImage( image ); 2.20.5 Crop and Rotate an Image The image Crop and Rotate90 methods are located in the ImageActionHandler class in the StarCommunity.Modules.ImageGallery. Import Necessary Namespaces First import the necessary namespaces that will be used to manage image galleries. The namespace StarCommunity.Modules.ImageGallery is described by clicking on its name. Make sure you add the assemblies as a reference, mentioned in Setting up Visual Studio. using StarCommunity.Modules.ImageGallery; First we need to get an Image to edit. This is done using the GetImage method in the ImageGalleryHandler class. At the same time we create an instance of the ImageActionHandler to access the crop and rotate methods: Image image = ImageGalleryHandler.GetImage( 1234 ); © EPiServer AB
Tutorials | 87 To begin with, we need a temporary file to save our image during editing, before we commit the changes to database. This can for example be done by using the System.IO.Path.GetTempFileName(), which creates such a file for us: string tmpImageFileName = System.IO.Path.GetTempFileName(); Then we rotate the image 90 degrees clockwise by calling the Rotate90 method in the ImageActionHandler: ImageAction rotateAction = iah.RotateImage90(image.AbsolutePath, tmpImageFileName, true); To crop the image we need to specify the coordinates for the upper-left corner and width and height. These are then passed to the Crop method in the ImageActionHandler class: int x = 23; int y = 54; int w = 100; int h = 100; ImageAction cropAction = ImageActionHandler.Crop(image.AbsolutePath, tmpImageFileName, image.Width, image.Height, x, y, w, h); The Rotate90 and Crop methods are returning an ImageAction object containing data on the changes that were made on the temporary image file. We collect the ImageAction objects to an ImageAction array: ImageAction[] ia = new ImageAction[] { rotateAction, cropAction }; To make the changes to the original Image object and commit the changes to database we call the ImportEditedImage method in the ImageGalleryHandler class providing the image action array: ImageGalleryHandler.ImportEditedImage(image, tmpImageFileName, ia); 2.20.6 Getting a Thumbnail of an Image In most cases you don’t want to display an image in the original format. Therefore, we use the GetThumbnail method in the ImageGalleryHandler where we can define height and width of the returned image. We can then use the Url property on the Thumbnail to display it on the web page. Import Necessary Namespaces First import the necessary namespaces that will be used to manage image galleries. The namespace StarCommunity.Modules.ImageGallery is described by clicking on its name. Make sure you add the assemblies as a reference, mentioned in Setting up Visual Studio. using StarCommunity.Modules.ImageGallery; © 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
Page 53 and 54: Tutorials | 35 Create a New Event C
Page 55 and 56: Tutorials | 37 Create Recurrent Eve
Page 57 and 58: Tutorials | 39 Import Necessary Nam
Page 59 and 60: Tutorials | 41 2.11 Chat The Chat M
Page 61 and 62: Tutorials | 43 2.11.2 Base The base
Page 63 and 64: Tutorials | 45 2.11.5 MessageBox Th
Page 65 and 66: Tutorials | 47 2.12.2 Removing a Cl
Page 67 and 68: Tutorials | 49 Adding an Ad with an
Page 69 and 70: Tutorials | 51 Import Necessary Nam
Page 71 and 72: Tutorials | 53 Get the contact rela
Page 73 and 74: Tutorials | 55 Then create a new Co
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: Tutorials | 85 First we need the Im
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 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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