Issue adding media template item in code behind

2 posts, 0 answers
  1. Paul
    Paul avatar
    32 posts
    Member since:
    Mar 2011

    Posted 29 Nov 2016 Link to this post

    I've followed the various steps in creating a custom video template item via the code behind. So for, the videos and thumbs load. However, the problem is that when I click next or a video from the gallery. It does a post back, the proper thumb is highlighted below, but the correct video doesn't show. If I start clicking around the proper videos do not show in their proper places.

    Here is my code below:

    Private Sub Page_Init(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Init
            For Each video As VideoClip In GetVideoCollection()
                Dim igti As New ImageGalleryTemplateItem()
                Dim template As New ImageGalleryContentTemplate(video)
                igti.ContentTemplate = template
                igti.ThumbnailUrl = video.Thumb
        End Sub
    Public Class VideoClip
            Private m_title As String
            Private m_videoID As String
            Private m_description As String
            Private m_thumb As String
            Public ReadOnly Property Title() As String
                    Return Me.m_title
                End Get
            End Property
            Public ReadOnly Property VideoID() As String
                    Return Me.m_videoID
                End Get
            End Property
            Public ReadOnly Property Description() As String
                    Return Me.m_description
                End Get
            End Property
            Public ReadOnly Property Thumb() As String
                    Return Me.m_thumb
                End Get
            End Property
            Public Sub New(title As String, videoID As String, description As String, thumb As String)
                Me.m_title = title
                Me.m_videoID = videoID
                Me.m_description = description
                Me.m_thumb = thumb
            End Sub
        End Class
        Private Function GetVideoCollection() As VideoClip()
            Dim clipsCollection As VideoClip() = New VideoClip(5) { _
                New VideoClip("Telerik UI for<br/> Windows 8 (Beta), UI", "", "RadControls for" & _
                              "Windows 8 is the toolset for building Windows 8 apps that run on tablets and large screens " & _
                              "no matter if you are coming from the XAML or HTML/JavaScript world.", _
                              "/movies/thumbs/4b23b9b2-ee9d-4a85-97c6-006423dfd1b8.jpg"), _
                New VideoClip("Telerik Windows 8 UI Controls", "", "Create fascinating touch-enabled Windows" & _
                              "8 apps that users will love.", _
                              "/movies/thumbs/3f886145-c6b1-4341-a829-0a456b6eda08.jpg"), _
                New VideoClip("Building Windows Phone 7 Apps that Rock the Marketplace", "", "RadControls for Windows" & _
                              "Phone is designed to speed up the development of windows phone apps and provide an array of controls.", _
                              "/movies/thumbs/3cdc9c12-3459-43e8-84bc-0f10bc1b6885.jpg"), _
                New VideoClip("Load Testing with Telerik Test Studio", "", "See how you can set up your test environment," & _
                              "assign virtual users to your controller and agents and create your user scenarios using multiple channels.", _
                              "/movies/thumbs/d1f5a1ac-ace0-4dc8-8a34-bb87a5119826.jpg"), _
                New VideoClip("Telerik Software Testing Tool - Test Studio - Overview", "", "With Test Studio you can create" & _
                              "functional web and desktop tests, performance tests and load tests with one easy tool.", _
                              "/movies/thumbs/c5a13e13-0332-4a51-8462-9300fc4b3027.jpg"), _
                New VideoClip("UI controls for building Windows Phone 7 apps.mp4", "", "If you want to see the controls in" & _
                              "action make sure to check our ToDoLists video on youtube.", _
            Return clipsCollection
        End Function
    Private Class ImageGalleryContentTemplate
            Implements ITemplate
            Public Property BackgroundImage() As [String]
                    Return m_BackgroundImage
                End Get
                Set(value As [String])
                    m_BackgroundImage = Value
                End Set
            End Property
            Private m_BackgroundImage As [String]
            Public Property HTMLTemplate() As [String]
                    Return m_HTMLTemplate
                End Get
                Set(value As [String])
                    m_HTMLTemplate = Value
                End Set
            End Property
            Private m_HTMLTemplate As [String]
            Protected player As RadMediaPlayer
            Private video As VideoClip
            Public Sub New(video As VideoClip)
       = video
            End Sub
            Public Sub InstantiateIn(container As Control) Implements ITemplate.InstantiateIn
                player = New RadMediaPlayer()
                player.ID = "RadMediaPlayer1"
                player.RenderMode = RenderMode.Lightweight
                player.ToolBar.FullScreenButton.Style("display") = "none"
                player.Title = video.Title
                player.Source = video.VideoID
                player.TitleBar.ShareButton.Visible = False
                player.ToolBar.HDButton.Visible = False
                player.ToolBar.SubtitlesButton.Visible = False
            End Sub
        End Class


    Where am I going wrong with this?

  2. Viktor Tachev
    Viktor Tachev avatar
    2501 posts

    Posted 02 Dec 2016 Link to this post

    Hello Paul,

    Would you try to create the entire RadImageGallery control in the code-behind using the Page_Init event and see how the behavior changes?

    In case the issue persists please send us a runnable sample where the issue is replicated. Thus, we will be able to examine the behavior locally and look for its cause.

    Viktor Tachev
    Telerik by Progress
    Telerik UI for ASP.NET AJAX is ready for Visual Studio 2017 RC! Learn more.
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