protected void InitializeCommands() { CommandManager cm = ((ICommandManagerHost)_contentEditorSite).CommandManager; commandVideoWebPreview = new VideoWebPreviewCommand(); commandVideoWebPreview.Execute += VideoWebPreview_Execute; cm.Add(commandVideoWebPreview); commandVideoWidescreenAspectRatio = new Command(CommandId.VideoWidescreenAspectRatio); commandVideoWidescreenAspectRatio.Execute += VideoAspectRatio_Execute; commandVideoWidescreenAspectRatio.Tag = VideoAspectRatioType.Widescreen; cm.Add(commandVideoWidescreenAspectRatio); commandVideoStandardAspectRatio = new Command(CommandId.VideoStandardAspectRatio); commandVideoStandardAspectRatio.Execute += VideoAspectRatio_Execute; commandVideoStandardAspectRatio.Tag = VideoAspectRatioType.Standard; cm.Add(commandVideoStandardAspectRatio); InitializeAlignmentMarginCommands(((ICommandManagerHost)_contentEditorSite).CommandManager); cm.Add(new GroupCommand(CommandId.FormatVideoGroup, commandVideoWebPreview)); }